Anticipating a Problem Pregnancy

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An Integrated System for the Recording and Retrieval of Medical Data in a Primary Care Setting: Part 4: Family Folders

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Prevalence and outcomes of incidental imaging findings

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Background: As frequency of imaging studies increases, and those studies become more advanced, incidental findings on imaging are a growing concern. Incidentalomas can lead to anxiety for patients, increased testing, and possible interventions such as biopsies. Current literature does not provide adequate guidance for providers to discuss the risks of incidentalomas with patients, nor are there clear methods described to manage incidentalomas when discovered.



Study design: This study was an umbrella review of systematic reviews and meta-analyses. Authors conduced their own meta-analyses using data from pooled sources.

Setting: MEDLINE and EMBASE were searched, which resulted in 20 unique systematic reviews analyzed, 15 of which provided incidence data and 18 included outcome data.

Synopsis: To assess prevalence of incidentalomas, the authors conducted nine meta-analyses, with a median number of 14,409 patients. Each analysis was created based on the imaging modality used and the area of the body where the incidental finding occurred. They examined the outcomes specific to incidentalomas within those organs. Their analysis showed that CT of the chest had the highest prevalence of incidentalomas (45%; 95% confidence interval, 36%-55%). Incidental findings in the breast had the highest rates of malignancy (42%; 95% CI, 31%-54%). Noncancerous outcomes described included disc degeneration on MRIs of the spine, aneurysms in brain imaging, and subclinical Cushing’s syndrome. There was significant heterogeneity in all the meta-analyses conducted.

Limitations included variations in how primary study authors defined a positive result and in imaging protocols. Although the authors of this study used primary data extracted from the individual studies in the systematic reviews, they did not analyze the primary studies for inclusion based on methods.

Bottom line: This study provides guidance to clinicians regarding counseling patients on the risks of incidentalomas and how to manage those incidental findings.

Citation: O’Sullivan JW et al. Prevalence and outcomes of incidental imaging findings: umbrella review. BMJ. 2018 Jun 18. doi: 10.1136/bmj.k2387.

Dr. Witt is an assistant professor of medicine in the division of hospital medicine at Emory University, Atlanta.

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Background: As frequency of imaging studies increases, and those studies become more advanced, incidental findings on imaging are a growing concern. Incidentalomas can lead to anxiety for patients, increased testing, and possible interventions such as biopsies. Current literature does not provide adequate guidance for providers to discuss the risks of incidentalomas with patients, nor are there clear methods described to manage incidentalomas when discovered.



Study design: This study was an umbrella review of systematic reviews and meta-analyses. Authors conduced their own meta-analyses using data from pooled sources.

Setting: MEDLINE and EMBASE were searched, which resulted in 20 unique systematic reviews analyzed, 15 of which provided incidence data and 18 included outcome data.

Synopsis: To assess prevalence of incidentalomas, the authors conducted nine meta-analyses, with a median number of 14,409 patients. Each analysis was created based on the imaging modality used and the area of the body where the incidental finding occurred. They examined the outcomes specific to incidentalomas within those organs. Their analysis showed that CT of the chest had the highest prevalence of incidentalomas (45%; 95% confidence interval, 36%-55%). Incidental findings in the breast had the highest rates of malignancy (42%; 95% CI, 31%-54%). Noncancerous outcomes described included disc degeneration on MRIs of the spine, aneurysms in brain imaging, and subclinical Cushing’s syndrome. There was significant heterogeneity in all the meta-analyses conducted.

Limitations included variations in how primary study authors defined a positive result and in imaging protocols. Although the authors of this study used primary data extracted from the individual studies in the systematic reviews, they did not analyze the primary studies for inclusion based on methods.

Bottom line: This study provides guidance to clinicians regarding counseling patients on the risks of incidentalomas and how to manage those incidental findings.

Citation: O’Sullivan JW et al. Prevalence and outcomes of incidental imaging findings: umbrella review. BMJ. 2018 Jun 18. doi: 10.1136/bmj.k2387.

Dr. Witt is an assistant professor of medicine in the division of hospital medicine at Emory University, Atlanta.

Background: As frequency of imaging studies increases, and those studies become more advanced, incidental findings on imaging are a growing concern. Incidentalomas can lead to anxiety for patients, increased testing, and possible interventions such as biopsies. Current literature does not provide adequate guidance for providers to discuss the risks of incidentalomas with patients, nor are there clear methods described to manage incidentalomas when discovered.



Study design: This study was an umbrella review of systematic reviews and meta-analyses. Authors conduced their own meta-analyses using data from pooled sources.

Setting: MEDLINE and EMBASE were searched, which resulted in 20 unique systematic reviews analyzed, 15 of which provided incidence data and 18 included outcome data.

Synopsis: To assess prevalence of incidentalomas, the authors conducted nine meta-analyses, with a median number of 14,409 patients. Each analysis was created based on the imaging modality used and the area of the body where the incidental finding occurred. They examined the outcomes specific to incidentalomas within those organs. Their analysis showed that CT of the chest had the highest prevalence of incidentalomas (45%; 95% confidence interval, 36%-55%). Incidental findings in the breast had the highest rates of malignancy (42%; 95% CI, 31%-54%). Noncancerous outcomes described included disc degeneration on MRIs of the spine, aneurysms in brain imaging, and subclinical Cushing’s syndrome. There was significant heterogeneity in all the meta-analyses conducted.

Limitations included variations in how primary study authors defined a positive result and in imaging protocols. Although the authors of this study used primary data extracted from the individual studies in the systematic reviews, they did not analyze the primary studies for inclusion based on methods.

Bottom line: This study provides guidance to clinicians regarding counseling patients on the risks of incidentalomas and how to manage those incidental findings.

Citation: O’Sullivan JW et al. Prevalence and outcomes of incidental imaging findings: umbrella review. BMJ. 2018 Jun 18. doi: 10.1136/bmj.k2387.

Dr. Witt is an assistant professor of medicine in the division of hospital medicine at Emory University, Atlanta.

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Think ‘fall prevention’ in SLE patients

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Falls figured prominently in the elevated fracture risk of SLE patients in a Dutch prospective longitudinal study, Irene E.M. Bultink, MD, PhD, reported at an international congress on systemic lupus erythematosus.

Dr. Irene E.M. Bultink
Bruce Jancin/MDedge News
Dr. Irene E.M. Bultink

“I think we should focus on fall risk and fall events in lupus. I think that’s a neglected area,” according to Dr. Bultink, a rheumatologist at the University of Amsterdam.

Contrary to the conventional wisdom, in her study, cumulative corticosteroid dose, average daily dosage, and bone loss were not significantly related to fracture risk in these SLE patients. That’s because Dr. Bultink and her fellow rheumatologists took steps to mitigate steroid-induced bone loss.

“We know steroids are very important for bone loss in lupus, but we demonstrated in our long-term follow-up study that it’s very dose dependent. If you use steroids below 7.5 mg daily and you protect your patient with calcium and vitamin D and, if possible, with bisphosphonates, the bone loss is restricted. I think fracture risk in lupus is more related to fall risk and fall incidence than to bone loss and steroid use. That’s what we demonstrated in our study,” she said in an interview.

“Unfortunately, until now, no studies on fall risk and fall events in lupus have been published. It’s not investigated very well. I think that fall risk in lupus patients might be greatly increased, compared to healthy controls,” Dr. Bultink added.

The study included 145 Dutch SLE patients with a mean age of 41 years at baseline. Ninety percent were women; 69% were white. Bone mineral density measurements by dual x-ray bone densitometry and x-rays of the lumbar and thoracic spine were obtained at entry and again after a median of 5 years.

Forty-two incident fractures occurred during a median of 7.2 years of follow-up. This equated to an incidence rate of 2.2 peripheral and 2.0 vertebral fractures per 100 person-years, rates double those in the Dutch general population.

In a logistic regression analysis, white ethnicity was independently associated with a 13.2-fold increased risk of fractures overall. Postmenopausal status conferred a fourfold increased risk. Older age was another important determinant. And patients with a prior stroke were at 15.5-fold greater risk of peripheral fractures.

“The prior stroke subgroup is especially vulnerable. In an earlier population-based study using data from the U.K. we also demonstrated that fractures happened more frequently in SLE patients who had already suffered a stroke (Osteoporos Int. 2014 Apr;25[4]:1275-83). So those are patients who are at very high risk for falling and fractures. But I think there are many reasons why patients with SLE would have an elevated fall risk. They have fatigue. They have muscle weakness, which might be due to vitamin D deficiency or prednisone use or inactivity. And they often have balance problems due to neuropathy or medication,” the rheumatologist observed.

She reported having no financial conflicts regarding her study, carried out free of commercial support.

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Falls figured prominently in the elevated fracture risk of SLE patients in a Dutch prospective longitudinal study, Irene E.M. Bultink, MD, PhD, reported at an international congress on systemic lupus erythematosus.

Dr. Irene E.M. Bultink
Bruce Jancin/MDedge News
Dr. Irene E.M. Bultink

“I think we should focus on fall risk and fall events in lupus. I think that’s a neglected area,” according to Dr. Bultink, a rheumatologist at the University of Amsterdam.

Contrary to the conventional wisdom, in her study, cumulative corticosteroid dose, average daily dosage, and bone loss were not significantly related to fracture risk in these SLE patients. That’s because Dr. Bultink and her fellow rheumatologists took steps to mitigate steroid-induced bone loss.

“We know steroids are very important for bone loss in lupus, but we demonstrated in our long-term follow-up study that it’s very dose dependent. If you use steroids below 7.5 mg daily and you protect your patient with calcium and vitamin D and, if possible, with bisphosphonates, the bone loss is restricted. I think fracture risk in lupus is more related to fall risk and fall incidence than to bone loss and steroid use. That’s what we demonstrated in our study,” she said in an interview.

“Unfortunately, until now, no studies on fall risk and fall events in lupus have been published. It’s not investigated very well. I think that fall risk in lupus patients might be greatly increased, compared to healthy controls,” Dr. Bultink added.

The study included 145 Dutch SLE patients with a mean age of 41 years at baseline. Ninety percent were women; 69% were white. Bone mineral density measurements by dual x-ray bone densitometry and x-rays of the lumbar and thoracic spine were obtained at entry and again after a median of 5 years.

Forty-two incident fractures occurred during a median of 7.2 years of follow-up. This equated to an incidence rate of 2.2 peripheral and 2.0 vertebral fractures per 100 person-years, rates double those in the Dutch general population.

In a logistic regression analysis, white ethnicity was independently associated with a 13.2-fold increased risk of fractures overall. Postmenopausal status conferred a fourfold increased risk. Older age was another important determinant. And patients with a prior stroke were at 15.5-fold greater risk of peripheral fractures.

“The prior stroke subgroup is especially vulnerable. In an earlier population-based study using data from the U.K. we also demonstrated that fractures happened more frequently in SLE patients who had already suffered a stroke (Osteoporos Int. 2014 Apr;25[4]:1275-83). So those are patients who are at very high risk for falling and fractures. But I think there are many reasons why patients with SLE would have an elevated fall risk. They have fatigue. They have muscle weakness, which might be due to vitamin D deficiency or prednisone use or inactivity. And they often have balance problems due to neuropathy or medication,” the rheumatologist observed.

She reported having no financial conflicts regarding her study, carried out free of commercial support.

 

Falls figured prominently in the elevated fracture risk of SLE patients in a Dutch prospective longitudinal study, Irene E.M. Bultink, MD, PhD, reported at an international congress on systemic lupus erythematosus.

Dr. Irene E.M. Bultink
Bruce Jancin/MDedge News
Dr. Irene E.M. Bultink

“I think we should focus on fall risk and fall events in lupus. I think that’s a neglected area,” according to Dr. Bultink, a rheumatologist at the University of Amsterdam.

Contrary to the conventional wisdom, in her study, cumulative corticosteroid dose, average daily dosage, and bone loss were not significantly related to fracture risk in these SLE patients. That’s because Dr. Bultink and her fellow rheumatologists took steps to mitigate steroid-induced bone loss.

“We know steroids are very important for bone loss in lupus, but we demonstrated in our long-term follow-up study that it’s very dose dependent. If you use steroids below 7.5 mg daily and you protect your patient with calcium and vitamin D and, if possible, with bisphosphonates, the bone loss is restricted. I think fracture risk in lupus is more related to fall risk and fall incidence than to bone loss and steroid use. That’s what we demonstrated in our study,” she said in an interview.

“Unfortunately, until now, no studies on fall risk and fall events in lupus have been published. It’s not investigated very well. I think that fall risk in lupus patients might be greatly increased, compared to healthy controls,” Dr. Bultink added.

The study included 145 Dutch SLE patients with a mean age of 41 years at baseline. Ninety percent were women; 69% were white. Bone mineral density measurements by dual x-ray bone densitometry and x-rays of the lumbar and thoracic spine were obtained at entry and again after a median of 5 years.

Forty-two incident fractures occurred during a median of 7.2 years of follow-up. This equated to an incidence rate of 2.2 peripheral and 2.0 vertebral fractures per 100 person-years, rates double those in the Dutch general population.

In a logistic regression analysis, white ethnicity was independently associated with a 13.2-fold increased risk of fractures overall. Postmenopausal status conferred a fourfold increased risk. Older age was another important determinant. And patients with a prior stroke were at 15.5-fold greater risk of peripheral fractures.

“The prior stroke subgroup is especially vulnerable. In an earlier population-based study using data from the U.K. we also demonstrated that fractures happened more frequently in SLE patients who had already suffered a stroke (Osteoporos Int. 2014 Apr;25[4]:1275-83). So those are patients who are at very high risk for falling and fractures. But I think there are many reasons why patients with SLE would have an elevated fall risk. They have fatigue. They have muscle weakness, which might be due to vitamin D deficiency or prednisone use or inactivity. And they often have balance problems due to neuropathy or medication,” the rheumatologist observed.

She reported having no financial conflicts regarding her study, carried out free of commercial support.

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Family Process and Family Practice

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Can immune checkpoint inhibitors treat PML?

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Treatment with pembrolizumab or nivolumab may benefit patients with progressive multifocal leukoencephalopathy (PML), investigators reported in the New England Journal of Medicine.

Three research teams described 10 cases in which patients with PML received pembrolizumab or nivolumab.

In one study, researchers administered pembrolizumab to eight adults with PML. Five patients had clinical improvement or stabilization, whereas 3 patients did not. Among the patients with clinical improvement, treatment led to reduced JC viral load in cerebrospinal fluid (CSF) and increased CD4+ and CD8+ anti–JC virus activity in vitro. Among patients without clinical improvement, treatment did not meaningfully change viral load or antiviral cellular immune response.

In a separate letter, researchers in Germany described an additional patient with PML who had clinical stabilization and no disease progression on MRI after treatment with pembrolizumab.

In another letter, researchers in France described a patient with PML whose condition improved after treatment with nivolumab.

“Do pembrolizumab and nivolumab fit the bill for treatment of PML? The current reports are encouraging but suggest that the presence of JC virus–specific T cells in the blood is a prerequisite for their use,” said Igor J. Koralnik, MD, of the department of neurological sciences at Rush University Medical Center in Chicago, in an accompanying editorial. “A controlled trial may be needed to determine whether immune checkpoint inhibitors are indeed able to keep JC virus in check in patients with PML.”


 

Reinvigorating T cells

Both monoclonal antibodies target programmed cell death protein 1 (PD-1), which inhibits T-cell proliferation and cytokine production when it binds its associated ligand, Dr. Koralnik said. Pembrolizumab and nivolumab block this inhibition and have been used to spur T-cell activity against tumors in patients with cancer.

PML, an often fatal brain infection caused by the JC virus in patients with immunosuppression, has no specific treatment. Management hinges on “recovery of the immune system, either by treating the underlying cause of immunosuppression or by discontinuing the use of immunosuppressive medications,” said Dr. Koralnik.
 

Pembrolizumab

Prior studies have found that PD-1 expression is elevated on T lymphocytes of patients with PML. To determine whether PD-1 blockade with pembrolizumab reinvigorates anti–JC virus immune activity in patients with PML, Irene Cortese, MD, of the National Institutes of Health’s Neuroimmunology Clinic and her research colleagues administered pembrolizumab at a dose of 2 mg/kg of body weight every 4-6 weeks to eight adults with PML. The patients received 1-3 doses, and each patient had a different underlying condition.

In all patients, treatment induced down-regulation of PD-1 expression on lymphocytes in CSF and peripheral blood, and five of the eight patients had clinical stabilization or improvement. Of the other three patients who did not improve, one had stabilized prior to treatment and remained stable. The other two patients died from PML.
 

Additional reports

Separately, Sebastian Rauer, MD, of Albert Ludwigs University in Freiburg, Germany, and his colleagues reported that a patient with PML whose symptoms culminated in mutism in February 2018 began speaking again after receiving five infusions of pembrolizumab over 10 weeks. “In addition, the size and number of lesions on MRI decreased, and JCV was no longer detectable in CSF,” Dr. Rauer and his colleagues wrote. “The patient has remained stable as of the end of March 2019, with persistent but abating psychomotor slowing, aphasia, and disorientation.”

 

 

Finally, Ondine Walter, of Toulouse (France) University Hospital and colleagues described the case of a 60-year-old woman with PML who received nivolumab on a compassionate-use basis. Two weeks after treatment, JC viral load in CSF and blood had decreased. “Starting 8 weeks after the initiation of nivolumab therapy, the patient’s neurologic symptoms and signs stabilized, and subsequently she showed improved alertness, and the ptosis and hemiplegia abated.”
 

Reason for caution

Prior studies, however, give reasons for caution when considering the potential use of immune checkpoint inhibitors to treat PML, Dr. Koralnik noted. In one case, a patient developed an inflammatory form of PML known as immune reconstitution inflammatory syndrome after receiving nivolumab (J Neurovirol. 2019 March 12. doi: 10.1007/s13365-019-00738-x). In addition, researchers have reported a case of PML that occurred after 1 year of nivolumab treatment, and four cases of PML related to nivolumab have been reported in pharmacovigilance databases (Emerg Infect Dis. 2018;24:1594-6). The cost and safety profiles of the medications also may be considerations, Dr. Koralnik said.

The study by Dr. Cortese and colleagues was funded by the National Institutes of Health, and the authors had no relevant disclosures. Some of the research letter authors disclosed grants and personal fees from pharmaceutical companies.

SOURCES: Cortese I et al. N Engl J Med. 2019 Apr 10. doi: 10.1056/NEJMoa1815039; Rauer S et al. N Engl J Med. 2019 Apr 10. doi: 10.1056/NEJMc1817193; Walter O et al. N Engl J Med. 2019 Apr 10. doi: 10.1056/NEJMc1816198; Koralnik IJ. N Engl J Med. 2019 Apr 10. doi: 10.1056/NEJMe1904140.

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Treatment with pembrolizumab or nivolumab may benefit patients with progressive multifocal leukoencephalopathy (PML), investigators reported in the New England Journal of Medicine.

Three research teams described 10 cases in which patients with PML received pembrolizumab or nivolumab.

In one study, researchers administered pembrolizumab to eight adults with PML. Five patients had clinical improvement or stabilization, whereas 3 patients did not. Among the patients with clinical improvement, treatment led to reduced JC viral load in cerebrospinal fluid (CSF) and increased CD4+ and CD8+ anti–JC virus activity in vitro. Among patients without clinical improvement, treatment did not meaningfully change viral load or antiviral cellular immune response.

In a separate letter, researchers in Germany described an additional patient with PML who had clinical stabilization and no disease progression on MRI after treatment with pembrolizumab.

In another letter, researchers in France described a patient with PML whose condition improved after treatment with nivolumab.

“Do pembrolizumab and nivolumab fit the bill for treatment of PML? The current reports are encouraging but suggest that the presence of JC virus–specific T cells in the blood is a prerequisite for their use,” said Igor J. Koralnik, MD, of the department of neurological sciences at Rush University Medical Center in Chicago, in an accompanying editorial. “A controlled trial may be needed to determine whether immune checkpoint inhibitors are indeed able to keep JC virus in check in patients with PML.”


 

Reinvigorating T cells

Both monoclonal antibodies target programmed cell death protein 1 (PD-1), which inhibits T-cell proliferation and cytokine production when it binds its associated ligand, Dr. Koralnik said. Pembrolizumab and nivolumab block this inhibition and have been used to spur T-cell activity against tumors in patients with cancer.

PML, an often fatal brain infection caused by the JC virus in patients with immunosuppression, has no specific treatment. Management hinges on “recovery of the immune system, either by treating the underlying cause of immunosuppression or by discontinuing the use of immunosuppressive medications,” said Dr. Koralnik.
 

Pembrolizumab

Prior studies have found that PD-1 expression is elevated on T lymphocytes of patients with PML. To determine whether PD-1 blockade with pembrolizumab reinvigorates anti–JC virus immune activity in patients with PML, Irene Cortese, MD, of the National Institutes of Health’s Neuroimmunology Clinic and her research colleagues administered pembrolizumab at a dose of 2 mg/kg of body weight every 4-6 weeks to eight adults with PML. The patients received 1-3 doses, and each patient had a different underlying condition.

In all patients, treatment induced down-regulation of PD-1 expression on lymphocytes in CSF and peripheral blood, and five of the eight patients had clinical stabilization or improvement. Of the other three patients who did not improve, one had stabilized prior to treatment and remained stable. The other two patients died from PML.
 

Additional reports

Separately, Sebastian Rauer, MD, of Albert Ludwigs University in Freiburg, Germany, and his colleagues reported that a patient with PML whose symptoms culminated in mutism in February 2018 began speaking again after receiving five infusions of pembrolizumab over 10 weeks. “In addition, the size and number of lesions on MRI decreased, and JCV was no longer detectable in CSF,” Dr. Rauer and his colleagues wrote. “The patient has remained stable as of the end of March 2019, with persistent but abating psychomotor slowing, aphasia, and disorientation.”

 

 

Finally, Ondine Walter, of Toulouse (France) University Hospital and colleagues described the case of a 60-year-old woman with PML who received nivolumab on a compassionate-use basis. Two weeks after treatment, JC viral load in CSF and blood had decreased. “Starting 8 weeks after the initiation of nivolumab therapy, the patient’s neurologic symptoms and signs stabilized, and subsequently she showed improved alertness, and the ptosis and hemiplegia abated.”
 

Reason for caution

Prior studies, however, give reasons for caution when considering the potential use of immune checkpoint inhibitors to treat PML, Dr. Koralnik noted. In one case, a patient developed an inflammatory form of PML known as immune reconstitution inflammatory syndrome after receiving nivolumab (J Neurovirol. 2019 March 12. doi: 10.1007/s13365-019-00738-x). In addition, researchers have reported a case of PML that occurred after 1 year of nivolumab treatment, and four cases of PML related to nivolumab have been reported in pharmacovigilance databases (Emerg Infect Dis. 2018;24:1594-6). The cost and safety profiles of the medications also may be considerations, Dr. Koralnik said.

The study by Dr. Cortese and colleagues was funded by the National Institutes of Health, and the authors had no relevant disclosures. Some of the research letter authors disclosed grants and personal fees from pharmaceutical companies.

SOURCES: Cortese I et al. N Engl J Med. 2019 Apr 10. doi: 10.1056/NEJMoa1815039; Rauer S et al. N Engl J Med. 2019 Apr 10. doi: 10.1056/NEJMc1817193; Walter O et al. N Engl J Med. 2019 Apr 10. doi: 10.1056/NEJMc1816198; Koralnik IJ. N Engl J Med. 2019 Apr 10. doi: 10.1056/NEJMe1904140.

 

Treatment with pembrolizumab or nivolumab may benefit patients with progressive multifocal leukoencephalopathy (PML), investigators reported in the New England Journal of Medicine.

Three research teams described 10 cases in which patients with PML received pembrolizumab or nivolumab.

In one study, researchers administered pembrolizumab to eight adults with PML. Five patients had clinical improvement or stabilization, whereas 3 patients did not. Among the patients with clinical improvement, treatment led to reduced JC viral load in cerebrospinal fluid (CSF) and increased CD4+ and CD8+ anti–JC virus activity in vitro. Among patients without clinical improvement, treatment did not meaningfully change viral load or antiviral cellular immune response.

In a separate letter, researchers in Germany described an additional patient with PML who had clinical stabilization and no disease progression on MRI after treatment with pembrolizumab.

In another letter, researchers in France described a patient with PML whose condition improved after treatment with nivolumab.

“Do pembrolizumab and nivolumab fit the bill for treatment of PML? The current reports are encouraging but suggest that the presence of JC virus–specific T cells in the blood is a prerequisite for their use,” said Igor J. Koralnik, MD, of the department of neurological sciences at Rush University Medical Center in Chicago, in an accompanying editorial. “A controlled trial may be needed to determine whether immune checkpoint inhibitors are indeed able to keep JC virus in check in patients with PML.”


 

Reinvigorating T cells

Both monoclonal antibodies target programmed cell death protein 1 (PD-1), which inhibits T-cell proliferation and cytokine production when it binds its associated ligand, Dr. Koralnik said. Pembrolizumab and nivolumab block this inhibition and have been used to spur T-cell activity against tumors in patients with cancer.

PML, an often fatal brain infection caused by the JC virus in patients with immunosuppression, has no specific treatment. Management hinges on “recovery of the immune system, either by treating the underlying cause of immunosuppression or by discontinuing the use of immunosuppressive medications,” said Dr. Koralnik.
 

Pembrolizumab

Prior studies have found that PD-1 expression is elevated on T lymphocytes of patients with PML. To determine whether PD-1 blockade with pembrolizumab reinvigorates anti–JC virus immune activity in patients with PML, Irene Cortese, MD, of the National Institutes of Health’s Neuroimmunology Clinic and her research colleagues administered pembrolizumab at a dose of 2 mg/kg of body weight every 4-6 weeks to eight adults with PML. The patients received 1-3 doses, and each patient had a different underlying condition.

In all patients, treatment induced down-regulation of PD-1 expression on lymphocytes in CSF and peripheral blood, and five of the eight patients had clinical stabilization or improvement. Of the other three patients who did not improve, one had stabilized prior to treatment and remained stable. The other two patients died from PML.
 

Additional reports

Separately, Sebastian Rauer, MD, of Albert Ludwigs University in Freiburg, Germany, and his colleagues reported that a patient with PML whose symptoms culminated in mutism in February 2018 began speaking again after receiving five infusions of pembrolizumab over 10 weeks. “In addition, the size and number of lesions on MRI decreased, and JCV was no longer detectable in CSF,” Dr. Rauer and his colleagues wrote. “The patient has remained stable as of the end of March 2019, with persistent but abating psychomotor slowing, aphasia, and disorientation.”

 

 

Finally, Ondine Walter, of Toulouse (France) University Hospital and colleagues described the case of a 60-year-old woman with PML who received nivolumab on a compassionate-use basis. Two weeks after treatment, JC viral load in CSF and blood had decreased. “Starting 8 weeks after the initiation of nivolumab therapy, the patient’s neurologic symptoms and signs stabilized, and subsequently she showed improved alertness, and the ptosis and hemiplegia abated.”
 

Reason for caution

Prior studies, however, give reasons for caution when considering the potential use of immune checkpoint inhibitors to treat PML, Dr. Koralnik noted. In one case, a patient developed an inflammatory form of PML known as immune reconstitution inflammatory syndrome after receiving nivolumab (J Neurovirol. 2019 March 12. doi: 10.1007/s13365-019-00738-x). In addition, researchers have reported a case of PML that occurred after 1 year of nivolumab treatment, and four cases of PML related to nivolumab have been reported in pharmacovigilance databases (Emerg Infect Dis. 2018;24:1594-6). The cost and safety profiles of the medications also may be considerations, Dr. Koralnik said.

The study by Dr. Cortese and colleagues was funded by the National Institutes of Health, and the authors had no relevant disclosures. Some of the research letter authors disclosed grants and personal fees from pharmaceutical companies.

SOURCES: Cortese I et al. N Engl J Med. 2019 Apr 10. doi: 10.1056/NEJMoa1815039; Rauer S et al. N Engl J Med. 2019 Apr 10. doi: 10.1056/NEJMc1817193; Walter O et al. N Engl J Med. 2019 Apr 10. doi: 10.1056/NEJMc1816198; Koralnik IJ. N Engl J Med. 2019 Apr 10. doi: 10.1056/NEJMe1904140.

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RIT consolidation may be an option for unfit MCL patients

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Fri, 12/16/2022 - 12:36

For older, less fit patients with mantle cell lymphoma (MCL) who may not be able to withstand the rigors of autologous stem cell transplants (ASCT), induction chemotherapy followed by radioimmunotherapy (RIT) consolidation with ibritumomab tiuxetan (Zevalin) was associated with good response rates and promising progression-free and overall survival rates, according to results of a phase 2 prospective study.

Mantle cell lymphoma histology
Wikimedia Commons/TexasPathologistMSW/CC-ASA 4.0 International
Mantle cell lymphoma

RIT consolidation improved the complete response rate following first-line therapy from 41% to 91%, reported Wojciech Jurczak, MD, PhD, from the department of hematology at the Uniwersytet Jagiellonski in Krakow, Poland, and colleagues.

In the patients who received RIT following first-line induction, median progression-free survival was 3.3 years, and median overall survival was 6.5 years.

“The achieved responses are durable. Although, several novel agents and targeted therapies alone or in combination are currently being studied and developed in both the upfront and relapsed settings, RIT constitutes a valid and underused option especially in the first-line setting,” they wrote in a study published in Leukemia & Lymphoma.

The investigators enrolled 46 patients with clinical stage III to IV MCL who were either ineligible for, or unwilling to undergo, ASCT. The cohort included 34 patients with newly diagnosed advanced MCL and 12 with chemo-sensitive MCL in first relapse.

Patients were assigned to induction with six cycles of chemotherapy, with or without rituximab. Patients then underwent consolidation with RIT if they had confirmed reductions of the maximal lymph node diameter below 3 cm, their longest spleen measurement was below 15 cm, and bone marrow infiltration was less than 20%.

The chemotherapy regimens included either CVP (cyclophosphamide, vincristine and prednisone), CHOP (cyclophosphamide, doxorubicin, vincristine, and prednisone), FC (fludarabine and cyclophosphamide), or FCM (FC plus mitoxantrone). Additionally, 27 of the 46 patients received rituximab, which was not considered the standard of care in Poland when the study began in 2005 and was delivered based on availability.

Of the 34 patients who received first-line chemotherapy, 20 received FC or FCM (with or without rituximab), and 14 received CHOP or CVP (with or without rituximab). In this group, 14 patients (41%) had a complete response, and 20 (95%) had a partial response. Of the 12 patients treated after first relapse, two (17%) had a complete response and 10 (83%) had partial response after induction.

RIT consolidation was performed 3-5 weeks after the last chemotherapy cycle. Patients with cytopenias after chemotherapy could wait an additional 3 weeks, during which they would receive a bridging dose of rituximab at the standard 375 mg/m2 dose. The patients received two doses of rituximab 250 mg/m2 administered 7 days then 24 hours prior to intravenous injection of 90Y-labeled ibritumomab tiuxetan. The radiation doses delivered were 0.4 mCi/kg for patients with normal platelet counts and 0.3 mCi/kg for those with platelet counts from 100,000 to 150,000 cells/mm3. The maximum dose was 32.0 mCi.

The longest follow-up was out to slightly more than 8 years.

For the patients who received RIT after first-line induction, the complete response rate was 91%, and the partial response rate was 9%, compared with 41% complete response and 59% partial response after induction. In this group, the median progression-free survival was 3.3 years, and the median overall survival was 6.5 years.

For the patients who received RIT consolidation after first relapse and second chemotherapy regimen, the complete response rate was 75% and the partial response rate was 25%, compared with 17% and 83% at the end of second induction therapy. In this group, the median progression-free survival was 1.8 years (P less than .05, compared with patients treated after first-line responses), and the median overall survival was 2.2 years (P less than .05).

At 8 years of follow-up, 30% of patients who received RIT consolidation following first-line therapy were alive.

Adverse events included cytopenias in the majority of patients (77%), which were grade 1 or 2 in severity in 43% and grade 3 or 4 in 34%. Grade 3 or 4 thrombocytopenia and leukopenia occurred more frequently in patients treated with fludarabine-based regimens, and the thrombocytopenias in these patients lasted longer and required more platelet transfusions than those in CHOP- or CVP-treated patients. Two patients who underwent RIT following FCM induction died from prolonged thrombocytopenia, resulting in hemorrhagic strokes.

Among all patients, 22 patients developed infections following RIT consolidation. Five patients, all of whom had received fludarabine, required hospitalization for the treatment of the infections. There were no infection-related deaths, however.

Five patients developed the myelodysplastic syndrome, with a median onset time of 26 months. Of these patients, four had received fludarabine, and one had undergone a prior ASCT.

The trial was sponsored by Schering AG. Dr. Jurczak reported speakers bureau participation and research funding from multiple companies, not including Schering AG.

SOURCE: Jurczak W et al. Leuk Lymphoma. 2019 Apr 9. doi: 10.1080/10428194.2019.1602261.

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For older, less fit patients with mantle cell lymphoma (MCL) who may not be able to withstand the rigors of autologous stem cell transplants (ASCT), induction chemotherapy followed by radioimmunotherapy (RIT) consolidation with ibritumomab tiuxetan (Zevalin) was associated with good response rates and promising progression-free and overall survival rates, according to results of a phase 2 prospective study.

Mantle cell lymphoma histology
Wikimedia Commons/TexasPathologistMSW/CC-ASA 4.0 International
Mantle cell lymphoma

RIT consolidation improved the complete response rate following first-line therapy from 41% to 91%, reported Wojciech Jurczak, MD, PhD, from the department of hematology at the Uniwersytet Jagiellonski in Krakow, Poland, and colleagues.

In the patients who received RIT following first-line induction, median progression-free survival was 3.3 years, and median overall survival was 6.5 years.

“The achieved responses are durable. Although, several novel agents and targeted therapies alone or in combination are currently being studied and developed in both the upfront and relapsed settings, RIT constitutes a valid and underused option especially in the first-line setting,” they wrote in a study published in Leukemia & Lymphoma.

The investigators enrolled 46 patients with clinical stage III to IV MCL who were either ineligible for, or unwilling to undergo, ASCT. The cohort included 34 patients with newly diagnosed advanced MCL and 12 with chemo-sensitive MCL in first relapse.

Patients were assigned to induction with six cycles of chemotherapy, with or without rituximab. Patients then underwent consolidation with RIT if they had confirmed reductions of the maximal lymph node diameter below 3 cm, their longest spleen measurement was below 15 cm, and bone marrow infiltration was less than 20%.

The chemotherapy regimens included either CVP (cyclophosphamide, vincristine and prednisone), CHOP (cyclophosphamide, doxorubicin, vincristine, and prednisone), FC (fludarabine and cyclophosphamide), or FCM (FC plus mitoxantrone). Additionally, 27 of the 46 patients received rituximab, which was not considered the standard of care in Poland when the study began in 2005 and was delivered based on availability.

Of the 34 patients who received first-line chemotherapy, 20 received FC or FCM (with or without rituximab), and 14 received CHOP or CVP (with or without rituximab). In this group, 14 patients (41%) had a complete response, and 20 (95%) had a partial response. Of the 12 patients treated after first relapse, two (17%) had a complete response and 10 (83%) had partial response after induction.

RIT consolidation was performed 3-5 weeks after the last chemotherapy cycle. Patients with cytopenias after chemotherapy could wait an additional 3 weeks, during which they would receive a bridging dose of rituximab at the standard 375 mg/m2 dose. The patients received two doses of rituximab 250 mg/m2 administered 7 days then 24 hours prior to intravenous injection of 90Y-labeled ibritumomab tiuxetan. The radiation doses delivered were 0.4 mCi/kg for patients with normal platelet counts and 0.3 mCi/kg for those with platelet counts from 100,000 to 150,000 cells/mm3. The maximum dose was 32.0 mCi.

The longest follow-up was out to slightly more than 8 years.

For the patients who received RIT after first-line induction, the complete response rate was 91%, and the partial response rate was 9%, compared with 41% complete response and 59% partial response after induction. In this group, the median progression-free survival was 3.3 years, and the median overall survival was 6.5 years.

For the patients who received RIT consolidation after first relapse and second chemotherapy regimen, the complete response rate was 75% and the partial response rate was 25%, compared with 17% and 83% at the end of second induction therapy. In this group, the median progression-free survival was 1.8 years (P less than .05, compared with patients treated after first-line responses), and the median overall survival was 2.2 years (P less than .05).

At 8 years of follow-up, 30% of patients who received RIT consolidation following first-line therapy were alive.

Adverse events included cytopenias in the majority of patients (77%), which were grade 1 or 2 in severity in 43% and grade 3 or 4 in 34%. Grade 3 or 4 thrombocytopenia and leukopenia occurred more frequently in patients treated with fludarabine-based regimens, and the thrombocytopenias in these patients lasted longer and required more platelet transfusions than those in CHOP- or CVP-treated patients. Two patients who underwent RIT following FCM induction died from prolonged thrombocytopenia, resulting in hemorrhagic strokes.

Among all patients, 22 patients developed infections following RIT consolidation. Five patients, all of whom had received fludarabine, required hospitalization for the treatment of the infections. There were no infection-related deaths, however.

Five patients developed the myelodysplastic syndrome, with a median onset time of 26 months. Of these patients, four had received fludarabine, and one had undergone a prior ASCT.

The trial was sponsored by Schering AG. Dr. Jurczak reported speakers bureau participation and research funding from multiple companies, not including Schering AG.

SOURCE: Jurczak W et al. Leuk Lymphoma. 2019 Apr 9. doi: 10.1080/10428194.2019.1602261.

For older, less fit patients with mantle cell lymphoma (MCL) who may not be able to withstand the rigors of autologous stem cell transplants (ASCT), induction chemotherapy followed by radioimmunotherapy (RIT) consolidation with ibritumomab tiuxetan (Zevalin) was associated with good response rates and promising progression-free and overall survival rates, according to results of a phase 2 prospective study.

Mantle cell lymphoma histology
Wikimedia Commons/TexasPathologistMSW/CC-ASA 4.0 International
Mantle cell lymphoma

RIT consolidation improved the complete response rate following first-line therapy from 41% to 91%, reported Wojciech Jurczak, MD, PhD, from the department of hematology at the Uniwersytet Jagiellonski in Krakow, Poland, and colleagues.

In the patients who received RIT following first-line induction, median progression-free survival was 3.3 years, and median overall survival was 6.5 years.

“The achieved responses are durable. Although, several novel agents and targeted therapies alone or in combination are currently being studied and developed in both the upfront and relapsed settings, RIT constitutes a valid and underused option especially in the first-line setting,” they wrote in a study published in Leukemia & Lymphoma.

The investigators enrolled 46 patients with clinical stage III to IV MCL who were either ineligible for, or unwilling to undergo, ASCT. The cohort included 34 patients with newly diagnosed advanced MCL and 12 with chemo-sensitive MCL in first relapse.

Patients were assigned to induction with six cycles of chemotherapy, with or without rituximab. Patients then underwent consolidation with RIT if they had confirmed reductions of the maximal lymph node diameter below 3 cm, their longest spleen measurement was below 15 cm, and bone marrow infiltration was less than 20%.

The chemotherapy regimens included either CVP (cyclophosphamide, vincristine and prednisone), CHOP (cyclophosphamide, doxorubicin, vincristine, and prednisone), FC (fludarabine and cyclophosphamide), or FCM (FC plus mitoxantrone). Additionally, 27 of the 46 patients received rituximab, which was not considered the standard of care in Poland when the study began in 2005 and was delivered based on availability.

Of the 34 patients who received first-line chemotherapy, 20 received FC or FCM (with or without rituximab), and 14 received CHOP or CVP (with or without rituximab). In this group, 14 patients (41%) had a complete response, and 20 (95%) had a partial response. Of the 12 patients treated after first relapse, two (17%) had a complete response and 10 (83%) had partial response after induction.

RIT consolidation was performed 3-5 weeks after the last chemotherapy cycle. Patients with cytopenias after chemotherapy could wait an additional 3 weeks, during which they would receive a bridging dose of rituximab at the standard 375 mg/m2 dose. The patients received two doses of rituximab 250 mg/m2 administered 7 days then 24 hours prior to intravenous injection of 90Y-labeled ibritumomab tiuxetan. The radiation doses delivered were 0.4 mCi/kg for patients with normal platelet counts and 0.3 mCi/kg for those with platelet counts from 100,000 to 150,000 cells/mm3. The maximum dose was 32.0 mCi.

The longest follow-up was out to slightly more than 8 years.

For the patients who received RIT after first-line induction, the complete response rate was 91%, and the partial response rate was 9%, compared with 41% complete response and 59% partial response after induction. In this group, the median progression-free survival was 3.3 years, and the median overall survival was 6.5 years.

For the patients who received RIT consolidation after first relapse and second chemotherapy regimen, the complete response rate was 75% and the partial response rate was 25%, compared with 17% and 83% at the end of second induction therapy. In this group, the median progression-free survival was 1.8 years (P less than .05, compared with patients treated after first-line responses), and the median overall survival was 2.2 years (P less than .05).

At 8 years of follow-up, 30% of patients who received RIT consolidation following first-line therapy were alive.

Adverse events included cytopenias in the majority of patients (77%), which were grade 1 or 2 in severity in 43% and grade 3 or 4 in 34%. Grade 3 or 4 thrombocytopenia and leukopenia occurred more frequently in patients treated with fludarabine-based regimens, and the thrombocytopenias in these patients lasted longer and required more platelet transfusions than those in CHOP- or CVP-treated patients. Two patients who underwent RIT following FCM induction died from prolonged thrombocytopenia, resulting in hemorrhagic strokes.

Among all patients, 22 patients developed infections following RIT consolidation. Five patients, all of whom had received fludarabine, required hospitalization for the treatment of the infections. There were no infection-related deaths, however.

Five patients developed the myelodysplastic syndrome, with a median onset time of 26 months. Of these patients, four had received fludarabine, and one had undergone a prior ASCT.

The trial was sponsored by Schering AG. Dr. Jurczak reported speakers bureau participation and research funding from multiple companies, not including Schering AG.

SOURCE: Jurczak W et al. Leuk Lymphoma. 2019 Apr 9. doi: 10.1080/10428194.2019.1602261.

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Nitrous oxide in dermatology

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The use of nitrous oxide in dermatology and dermatologic surgery is becoming more common. When used properly, with meticulous patient monitoring, it is safe and effective. In my practice, I have used it for procedures as simple as a skin biopsy. While we have excellent topical numbing options for pain control, nitrous oxide works well as an anxiolytic and can help calm the patient who is nervous or has a fear of needles.

Dr. Lily Talakoub, McLean (Va.) Dermatology and Skin Care Center
Dr. Lily Talakoub

Nitrous oxide is a tasteless gas synthesized and released by cells. Inhalational nitrous oxide is absorbed from the lungs and diffuses into plasma, where it acts on the central nervous system as an anxiolytic and analgesic by blocking the NMDA receptor. It has a quick onset of action and short duration, is easily titrated, and has a low side effect profile.



Initially used to provide pain relief during labor in the late 1800s, nitrous oxide is now rarely used in the United States as inhalational analgesia during surgery or labor; however, use in dentistry and pediatrics is common. In a recent review of PubMed and Cochrane databases by Brotzman et al., eight studies on the use of nitrous oxide in dermatology were identified. Studies reported favorable safety and efficacy of nitrous oxide in providing analgesia during dermatologic procedures, which included facial rejuvenation, hair transplantation, and pediatric procedures. Several other studies also discussed the use of nitrous oxide in combination with tumescent anesthesia for venous ablation and liposuction. All adverse effects were limited to the time of inhalation and included euphoria, laughter, nausea, dizziness, and vertigo. There are no studies reviewing the risk of nitrous oxide used during CO2 resurfacing procedures.

In five of the eight studies, vital signs and oxygen saturation were recorded during the period of inhalation. Almost all patients maintained adequate oxygen saturation and vitals also remained stable in these five studies, except for a slight increase in systolic and diastolic arterial pressure after ulcer debridement. In four of the eight studies, a 50% nitrous oxide/50% oxygen mixture delivered through an on-demand valve activated by a patient’s inspired breaths was used to minimize the risk of oversedation and to prevent hypoxia.

Dr. Naissan O. Wesley, a dermatologist who practices in Beverly Hills, Calif.
Dr. Naissan O. Wesley

Contraindications for using nitrous oxide are pregnancy (in patients, health care providers, and assistants). Relative contraindications include nasal obstruction, chronic obstructive pulmonary disease, active cystic fibrosis, recent tympanic membrane surgery, and claustrophobia. According to the National Institute for Occupational Safety and Health, occupational exposure to nitrous oxide can lead to adverse effects that include reduced fertility and spontaneous abortion, as well as neurologic, renal, and hepatic diseases. The consensus of the majority of the studies in the PubMed/Cochrane review is that nitrous oxide provided a significant reduction in pain during dermatologic procedures, with mild and transient adverse effects. The effects dissipated quickly and thus patients could drive themselves home. But studies remain limited, and more well designed, randomized clinical trials are needed to provide clinical guidelines, safety monitoring protocols, and evidence for the use of nitrous oxide in dermatology. In my opinion, when more data are available, it will become one of the mainstays of analgesia in dermatologic procedures, particularly for pediatric, Mohs, and facial rejuvenation procedures.
 

Dr. Talakoub Dr. Wesley and are cocontributors to this column. Dr. Talakoub is in private practice in McLean, Va. Dr. Wesley practices dermatology in Beverly Hills, Calif. This month’s column is by Dr. Talakoub. Write to them at dermnews@mdedge.com. They had no relevant disclosures.

Sources

Brotzman EA et al. Dermatol Surg. 2018 May;44(5):661-9.

“Controlling Exposures to Nitrous Oxide During Anesthetic Administration,” National Institute for Occupational Safety and Health (https://www.cdc.gov/niosh/docs/94-100/default.html).
 

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The use of nitrous oxide in dermatology and dermatologic surgery is becoming more common. When used properly, with meticulous patient monitoring, it is safe and effective. In my practice, I have used it for procedures as simple as a skin biopsy. While we have excellent topical numbing options for pain control, nitrous oxide works well as an anxiolytic and can help calm the patient who is nervous or has a fear of needles.

Dr. Lily Talakoub, McLean (Va.) Dermatology and Skin Care Center
Dr. Lily Talakoub

Nitrous oxide is a tasteless gas synthesized and released by cells. Inhalational nitrous oxide is absorbed from the lungs and diffuses into plasma, where it acts on the central nervous system as an anxiolytic and analgesic by blocking the NMDA receptor. It has a quick onset of action and short duration, is easily titrated, and has a low side effect profile.



Initially used to provide pain relief during labor in the late 1800s, nitrous oxide is now rarely used in the United States as inhalational analgesia during surgery or labor; however, use in dentistry and pediatrics is common. In a recent review of PubMed and Cochrane databases by Brotzman et al., eight studies on the use of nitrous oxide in dermatology were identified. Studies reported favorable safety and efficacy of nitrous oxide in providing analgesia during dermatologic procedures, which included facial rejuvenation, hair transplantation, and pediatric procedures. Several other studies also discussed the use of nitrous oxide in combination with tumescent anesthesia for venous ablation and liposuction. All adverse effects were limited to the time of inhalation and included euphoria, laughter, nausea, dizziness, and vertigo. There are no studies reviewing the risk of nitrous oxide used during CO2 resurfacing procedures.

In five of the eight studies, vital signs and oxygen saturation were recorded during the period of inhalation. Almost all patients maintained adequate oxygen saturation and vitals also remained stable in these five studies, except for a slight increase in systolic and diastolic arterial pressure after ulcer debridement. In four of the eight studies, a 50% nitrous oxide/50% oxygen mixture delivered through an on-demand valve activated by a patient’s inspired breaths was used to minimize the risk of oversedation and to prevent hypoxia.

Dr. Naissan O. Wesley, a dermatologist who practices in Beverly Hills, Calif.
Dr. Naissan O. Wesley

Contraindications for using nitrous oxide are pregnancy (in patients, health care providers, and assistants). Relative contraindications include nasal obstruction, chronic obstructive pulmonary disease, active cystic fibrosis, recent tympanic membrane surgery, and claustrophobia. According to the National Institute for Occupational Safety and Health, occupational exposure to nitrous oxide can lead to adverse effects that include reduced fertility and spontaneous abortion, as well as neurologic, renal, and hepatic diseases. The consensus of the majority of the studies in the PubMed/Cochrane review is that nitrous oxide provided a significant reduction in pain during dermatologic procedures, with mild and transient adverse effects. The effects dissipated quickly and thus patients could drive themselves home. But studies remain limited, and more well designed, randomized clinical trials are needed to provide clinical guidelines, safety monitoring protocols, and evidence for the use of nitrous oxide in dermatology. In my opinion, when more data are available, it will become one of the mainstays of analgesia in dermatologic procedures, particularly for pediatric, Mohs, and facial rejuvenation procedures.
 

Dr. Talakoub Dr. Wesley and are cocontributors to this column. Dr. Talakoub is in private practice in McLean, Va. Dr. Wesley practices dermatology in Beverly Hills, Calif. This month’s column is by Dr. Talakoub. Write to them at dermnews@mdedge.com. They had no relevant disclosures.

Sources

Brotzman EA et al. Dermatol Surg. 2018 May;44(5):661-9.

“Controlling Exposures to Nitrous Oxide During Anesthetic Administration,” National Institute for Occupational Safety and Health (https://www.cdc.gov/niosh/docs/94-100/default.html).
 

 

The use of nitrous oxide in dermatology and dermatologic surgery is becoming more common. When used properly, with meticulous patient monitoring, it is safe and effective. In my practice, I have used it for procedures as simple as a skin biopsy. While we have excellent topical numbing options for pain control, nitrous oxide works well as an anxiolytic and can help calm the patient who is nervous or has a fear of needles.

Dr. Lily Talakoub, McLean (Va.) Dermatology and Skin Care Center
Dr. Lily Talakoub

Nitrous oxide is a tasteless gas synthesized and released by cells. Inhalational nitrous oxide is absorbed from the lungs and diffuses into plasma, where it acts on the central nervous system as an anxiolytic and analgesic by blocking the NMDA receptor. It has a quick onset of action and short duration, is easily titrated, and has a low side effect profile.



Initially used to provide pain relief during labor in the late 1800s, nitrous oxide is now rarely used in the United States as inhalational analgesia during surgery or labor; however, use in dentistry and pediatrics is common. In a recent review of PubMed and Cochrane databases by Brotzman et al., eight studies on the use of nitrous oxide in dermatology were identified. Studies reported favorable safety and efficacy of nitrous oxide in providing analgesia during dermatologic procedures, which included facial rejuvenation, hair transplantation, and pediatric procedures. Several other studies also discussed the use of nitrous oxide in combination with tumescent anesthesia for venous ablation and liposuction. All adverse effects were limited to the time of inhalation and included euphoria, laughter, nausea, dizziness, and vertigo. There are no studies reviewing the risk of nitrous oxide used during CO2 resurfacing procedures.

In five of the eight studies, vital signs and oxygen saturation were recorded during the period of inhalation. Almost all patients maintained adequate oxygen saturation and vitals also remained stable in these five studies, except for a slight increase in systolic and diastolic arterial pressure after ulcer debridement. In four of the eight studies, a 50% nitrous oxide/50% oxygen mixture delivered through an on-demand valve activated by a patient’s inspired breaths was used to minimize the risk of oversedation and to prevent hypoxia.

Dr. Naissan O. Wesley, a dermatologist who practices in Beverly Hills, Calif.
Dr. Naissan O. Wesley

Contraindications for using nitrous oxide are pregnancy (in patients, health care providers, and assistants). Relative contraindications include nasal obstruction, chronic obstructive pulmonary disease, active cystic fibrosis, recent tympanic membrane surgery, and claustrophobia. According to the National Institute for Occupational Safety and Health, occupational exposure to nitrous oxide can lead to adverse effects that include reduced fertility and spontaneous abortion, as well as neurologic, renal, and hepatic diseases. The consensus of the majority of the studies in the PubMed/Cochrane review is that nitrous oxide provided a significant reduction in pain during dermatologic procedures, with mild and transient adverse effects. The effects dissipated quickly and thus patients could drive themselves home. But studies remain limited, and more well designed, randomized clinical trials are needed to provide clinical guidelines, safety monitoring protocols, and evidence for the use of nitrous oxide in dermatology. In my opinion, when more data are available, it will become one of the mainstays of analgesia in dermatologic procedures, particularly for pediatric, Mohs, and facial rejuvenation procedures.
 

Dr. Talakoub Dr. Wesley and are cocontributors to this column. Dr. Talakoub is in private practice in McLean, Va. Dr. Wesley practices dermatology in Beverly Hills, Calif. This month’s column is by Dr. Talakoub. Write to them at dermnews@mdedge.com. They had no relevant disclosures.

Sources

Brotzman EA et al. Dermatol Surg. 2018 May;44(5):661-9.

“Controlling Exposures to Nitrous Oxide During Anesthetic Administration,” National Institute for Occupational Safety and Health (https://www.cdc.gov/niosh/docs/94-100/default.html).
 

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Volunteerism: How and why to do it, according to Dr. Eileen Barrett

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Thu, 06/29/2023 - 16:14

Eileen Barrett, MD, explained why she volunteers and gave examples of ways she has used her physician training and other expertise to help several communities.

“I think what we get out of it is the feeling of our commitment to our sense of purpose and mission, and you just feel great when you’re giving, and then you meet these really remarkable people who do really, really remarkable things. ... It’s tremendously inspiring,” Dr. Barrett said in a video interview at the annual meeting of the American College of Physicians. She is a hospitalist at the University of New Mexico, Albuquerque, and serves on the ACP Board of Regents.

In addition, Dr. Barrett has done disaster relief work in West Africa, provided patient care to refugees in a hospital on the Thailand side of the Thailand-Myanmar border, and even helped bring organization to a public radio station in rural New Mexico.

She also described some opportunities available to internists who are trying to get their feet wet in volunteering that are available through the organizations, Health Volunteers Overseas and the Maven Project.

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Eileen Barrett, MD, explained why she volunteers and gave examples of ways she has used her physician training and other expertise to help several communities.

“I think what we get out of it is the feeling of our commitment to our sense of purpose and mission, and you just feel great when you’re giving, and then you meet these really remarkable people who do really, really remarkable things. ... It’s tremendously inspiring,” Dr. Barrett said in a video interview at the annual meeting of the American College of Physicians. She is a hospitalist at the University of New Mexico, Albuquerque, and serves on the ACP Board of Regents.

In addition, Dr. Barrett has done disaster relief work in West Africa, provided patient care to refugees in a hospital on the Thailand side of the Thailand-Myanmar border, and even helped bring organization to a public radio station in rural New Mexico.

She also described some opportunities available to internists who are trying to get their feet wet in volunteering that are available through the organizations, Health Volunteers Overseas and the Maven Project.

Eileen Barrett, MD, explained why she volunteers and gave examples of ways she has used her physician training and other expertise to help several communities.

“I think what we get out of it is the feeling of our commitment to our sense of purpose and mission, and you just feel great when you’re giving, and then you meet these really remarkable people who do really, really remarkable things. ... It’s tremendously inspiring,” Dr. Barrett said in a video interview at the annual meeting of the American College of Physicians. She is a hospitalist at the University of New Mexico, Albuquerque, and serves on the ACP Board of Regents.

In addition, Dr. Barrett has done disaster relief work in West Africa, provided patient care to refugees in a hospital on the Thailand side of the Thailand-Myanmar border, and even helped bring organization to a public radio station in rural New Mexico.

She also described some opportunities available to internists who are trying to get their feet wet in volunteering that are available through the organizations, Health Volunteers Overseas and the Maven Project.

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