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Infectious disease pop quiz: Clinical challenge #24 for the ObGyn
What are the 2 most likely causes for persistent fever in a patient who is being treated with antibiotics for postcesarean endometritis?
Continue to the answer...
The 2 most likely causes of a poor response to treatment for postcesarean endometritis are a resistant microorganism and wound infection. Less common causes of persistent postoperative fever include septic pelvic vein thrombophlebitis, pelvic abscess, retained products of conception, reactivation of a connective tissue disorder, and drug fever.
- Duff P. Maternal and perinatal infections: bacterial. In: Landon MB, Galan HL, Jauniaux ERM, et al. Gabbe’s Obstetrics: Normal and Problem Pregnancies. 8th ed. Elsevier; 2021:1124-1146.
- Duff P. Maternal and fetal infections. In: Resnik R, Lockwood CJ, Moore TJ, et al. Creasy & Resnik’s Maternal-Fetal Medicine: Principles and Practice. 8th ed. Elsevier; 2019:862-919.
Dr. Edwards is a Resident in the Department of Medicine, University of Florida College of Medicine, Gainesville.
Dr. Duff is Professor of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Florida College of Medicine, Gainesville.
The authors report no financial relationships relevant to this article.
Dr. Edwards is a Resident in the Department of Medicine, University of Florida College of Medicine, Gainesville.
Dr. Duff is Professor of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Florida College of Medicine, Gainesville.
The authors report no financial relationships relevant to this article.
Dr. Edwards is a Resident in the Department of Medicine, University of Florida College of Medicine, Gainesville.
Dr. Duff is Professor of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Florida College of Medicine, Gainesville.
The authors report no financial relationships relevant to this article.
What are the 2 most likely causes for persistent fever in a patient who is being treated with antibiotics for postcesarean endometritis?
Continue to the answer...
The 2 most likely causes of a poor response to treatment for postcesarean endometritis are a resistant microorganism and wound infection. Less common causes of persistent postoperative fever include septic pelvic vein thrombophlebitis, pelvic abscess, retained products of conception, reactivation of a connective tissue disorder, and drug fever.
What are the 2 most likely causes for persistent fever in a patient who is being treated with antibiotics for postcesarean endometritis?
Continue to the answer...
The 2 most likely causes of a poor response to treatment for postcesarean endometritis are a resistant microorganism and wound infection. Less common causes of persistent postoperative fever include septic pelvic vein thrombophlebitis, pelvic abscess, retained products of conception, reactivation of a connective tissue disorder, and drug fever.
- Duff P. Maternal and perinatal infections: bacterial. In: Landon MB, Galan HL, Jauniaux ERM, et al. Gabbe’s Obstetrics: Normal and Problem Pregnancies. 8th ed. Elsevier; 2021:1124-1146.
- Duff P. Maternal and fetal infections. In: Resnik R, Lockwood CJ, Moore TJ, et al. Creasy & Resnik’s Maternal-Fetal Medicine: Principles and Practice. 8th ed. Elsevier; 2019:862-919.
- Duff P. Maternal and perinatal infections: bacterial. In: Landon MB, Galan HL, Jauniaux ERM, et al. Gabbe’s Obstetrics: Normal and Problem Pregnancies. 8th ed. Elsevier; 2021:1124-1146.
- Duff P. Maternal and fetal infections. In: Resnik R, Lockwood CJ, Moore TJ, et al. Creasy & Resnik’s Maternal-Fetal Medicine: Principles and Practice. 8th ed. Elsevier; 2019:862-919.
Infectious disease pop quiz: Clinical challenge #23 for the ObGyn
What are the most common organisms that cause chorioamnionitis and puerperal endometritis?
Continue to the answer...
Chorioamnionitis and puerperal endometritis are polymicrobial, mixed aerobic-anaerobic infections. The dominant organisms are anaerobic gram-negative bacilli (Bacteroides and Prevotella species); anaerobic gram-positive cocci (Peptococcus species and Peptostreptococcus species); aerobic gram-negative bacilli (principally, Escherichia coli, Klebsiella pneumoniae, and Proteus species); and aerobic gram-positive cocci (enterococci, staphylococci, and group B streptococci).
- Duff P. Maternal and perinatal infections: bacterial. In: Landon MB, Galan HL, Jauniaux ERM, et al. Gabbe’s Obstetrics: Normal and Problem Pregnancies. 8th ed. Elsevier; 2021:1124-1146.
- Duff P. Maternal and fetal infections. In: Resnik R, Lockwood CJ, Moore TJ, et al. Creasy & Resnik’s Maternal-Fetal Medicine: Principles and Practice. 8th ed. Elsevier; 2019:862-919.
Dr. Edwards is a Resident in the Department of Medicine, University of Florida College of Medicine, Gainesville.
Dr. Duff is Professor of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Florida College of Medicine, Gainesville.
The authors report no financial relationships relevant to this article.
Dr. Edwards is a Resident in the Department of Medicine, University of Florida College of Medicine, Gainesville.
Dr. Duff is Professor of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Florida College of Medicine, Gainesville.
The authors report no financial relationships relevant to this article.
Dr. Edwards is a Resident in the Department of Medicine, University of Florida College of Medicine, Gainesville.
Dr. Duff is Professor of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Florida College of Medicine, Gainesville.
The authors report no financial relationships relevant to this article.
What are the most common organisms that cause chorioamnionitis and puerperal endometritis?
Continue to the answer...
Chorioamnionitis and puerperal endometritis are polymicrobial, mixed aerobic-anaerobic infections. The dominant organisms are anaerobic gram-negative bacilli (Bacteroides and Prevotella species); anaerobic gram-positive cocci (Peptococcus species and Peptostreptococcus species); aerobic gram-negative bacilli (principally, Escherichia coli, Klebsiella pneumoniae, and Proteus species); and aerobic gram-positive cocci (enterococci, staphylococci, and group B streptococci).
What are the most common organisms that cause chorioamnionitis and puerperal endometritis?
Continue to the answer...
Chorioamnionitis and puerperal endometritis are polymicrobial, mixed aerobic-anaerobic infections. The dominant organisms are anaerobic gram-negative bacilli (Bacteroides and Prevotella species); anaerobic gram-positive cocci (Peptococcus species and Peptostreptococcus species); aerobic gram-negative bacilli (principally, Escherichia coli, Klebsiella pneumoniae, and Proteus species); and aerobic gram-positive cocci (enterococci, staphylococci, and group B streptococci).
- Duff P. Maternal and perinatal infections: bacterial. In: Landon MB, Galan HL, Jauniaux ERM, et al. Gabbe’s Obstetrics: Normal and Problem Pregnancies. 8th ed. Elsevier; 2021:1124-1146.
- Duff P. Maternal and fetal infections. In: Resnik R, Lockwood CJ, Moore TJ, et al. Creasy & Resnik’s Maternal-Fetal Medicine: Principles and Practice. 8th ed. Elsevier; 2019:862-919.
- Duff P. Maternal and perinatal infections: bacterial. In: Landon MB, Galan HL, Jauniaux ERM, et al. Gabbe’s Obstetrics: Normal and Problem Pregnancies. 8th ed. Elsevier; 2021:1124-1146.
- Duff P. Maternal and fetal infections. In: Resnik R, Lockwood CJ, Moore TJ, et al. Creasy & Resnik’s Maternal-Fetal Medicine: Principles and Practice. 8th ed. Elsevier; 2019:862-919.
Infectious disease pop quiz: Clinical challenge #22 for the ObGyn
In a pregnant woman who has a life-threatening allergy to penicillin, what is the most appropriate treatment for syphilis?
Continue to the answer...
This patient should be admitted to the hospital and rapidly desensitized to penicillin. She then can be treated with the appropriate dose of penicillin, given her stage of syphilis. Of note, in the future, the patient’s allergy to penicillin will return, despite the brief period of desensitization.
- Duff P. Maternal and perinatal infections: bacterial. In: Landon MB, Galan HL, Jauniaux ERM, et al. Gabbe’s Obstetrics: Normal and Problem Pregnancies. 8th ed. Elsevier; 2021:1124-1146.
- Duff P. Maternal and fetal infections. In: Resnik R, Lockwood CJ, Moore TJ, et al. Creasy & Resnik’s Maternal-Fetal Medicine: Principles and Practice. 8th ed. Elsevier; 2019:862-919.
Dr. Edwards is a Resident in the Department of Medicine, University of Florida College of Medicine, Gainesville.
Dr. Duff is Professor of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Florida College of Medicine, Gainesville.
The authors report no financial relationships relevant to this article.
Dr. Edwards is a Resident in the Department of Medicine, University of Florida College of Medicine, Gainesville.
Dr. Duff is Professor of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Florida College of Medicine, Gainesville.
The authors report no financial relationships relevant to this article.
Dr. Edwards is a Resident in the Department of Medicine, University of Florida College of Medicine, Gainesville.
Dr. Duff is Professor of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Florida College of Medicine, Gainesville.
The authors report no financial relationships relevant to this article.
In a pregnant woman who has a life-threatening allergy to penicillin, what is the most appropriate treatment for syphilis?
Continue to the answer...
This patient should be admitted to the hospital and rapidly desensitized to penicillin. She then can be treated with the appropriate dose of penicillin, given her stage of syphilis. Of note, in the future, the patient’s allergy to penicillin will return, despite the brief period of desensitization.
In a pregnant woman who has a life-threatening allergy to penicillin, what is the most appropriate treatment for syphilis?
Continue to the answer...
This patient should be admitted to the hospital and rapidly desensitized to penicillin. She then can be treated with the appropriate dose of penicillin, given her stage of syphilis. Of note, in the future, the patient’s allergy to penicillin will return, despite the brief period of desensitization.
- Duff P. Maternal and perinatal infections: bacterial. In: Landon MB, Galan HL, Jauniaux ERM, et al. Gabbe’s Obstetrics: Normal and Problem Pregnancies. 8th ed. Elsevier; 2021:1124-1146.
- Duff P. Maternal and fetal infections. In: Resnik R, Lockwood CJ, Moore TJ, et al. Creasy & Resnik’s Maternal-Fetal Medicine: Principles and Practice. 8th ed. Elsevier; 2019:862-919.
- Duff P. Maternal and perinatal infections: bacterial. In: Landon MB, Galan HL, Jauniaux ERM, et al. Gabbe’s Obstetrics: Normal and Problem Pregnancies. 8th ed. Elsevier; 2021:1124-1146.
- Duff P. Maternal and fetal infections. In: Resnik R, Lockwood CJ, Moore TJ, et al. Creasy & Resnik’s Maternal-Fetal Medicine: Principles and Practice. 8th ed. Elsevier; 2019:862-919.
Infectious disease pop quiz: Clinical challenges for the ObGyn
In this question-and-answer article (the third in a series), our objective is to reinforce for the clinician several practical points of management for common infectious diseases. The principal references for the answers to the questions are 2 textbook chapters written by Dr. Duff.1,2 Other pertinent references are included in the text.
21. What prophylactic antibiotic should be administered intrapartum to a pregnant woman who is colonized with group B streptococci but who has a mild allergy to penicillin?
In this situation, the drug of choice is intravenous cefazolin, 2 g initially then 1 g every 8 hours until delivery. For patients with a severe allergy to penicillin, the drugs of choice are either clindamycin, 900 mg intravenously every 8 hours (if sensitivity of the organism is confirmed), or vancomycin, 20 mg/kg intravenously every 8 hours (maximum of 2 g per single dose).
22. In a pregnant woman who has a life-threatening allergy to penicillin, what is the most appropriate treatment for syphilis?
This patient should be admitted to the hospital and rapidly desensitized to penicillin. She then can be treated with the appropriate dose of penicillin, given her stage of syphilis. Of note, in the future, the patient’s allergy to penicillin will return, despite the brief period of desensitization.
23. What are the most common organisms that cause chorioamnionitis and puerperal endometritis?
Chorioamnionitis and puerperal endometritis are polymicrobial, mixed aerobic-anaerobic infections. The dominant organisms are anaerobic gram-negative bacilli (Bacteroides and Prevotella species); anaerobic gram-positive cocci (Peptococcus species and Peptostreptococcus species); aerobic gram-negative bacilli (principally, Escherichia coli, Klebsiella pneumoniae, and Proteus species); and aerobic gram-positive cocci (enterococci, staphylococci, and group B streptococci). ●
- Duff P. Maternal and perinatal infections: bacterial. In: Landon MB, Galan HL, Jauniaux ERM, et al. Gabbe’s Obstetrics: Normal and Problem Pregnancies. 8th ed. Elsevier; 2021:1124-1146.
- Duff P. Maternal and fetal infections. In: Resnik R, Lockwood CJ, Moore TJ, et al. Creasy & Resnik’s Maternal-Fetal Medicine: Principles and Practice. 8th ed. Elsevier; 2019:862-919.
Dr. Edwards is a Resident in the Department of Medicine, University of Florida College of Medicine, Gainesville.
Dr. Duff is Professor of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology,University of Florida College of Medicine, Gainesville.
The authors report no financial relationships relevant to this article.
Dr. Edwards is a Resident in the Department of Medicine, University of Florida College of Medicine, Gainesville.
Dr. Duff is Professor of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology,University of Florida College of Medicine, Gainesville.
The authors report no financial relationships relevant to this article.
Dr. Edwards is a Resident in the Department of Medicine, University of Florida College of Medicine, Gainesville.
Dr. Duff is Professor of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology,University of Florida College of Medicine, Gainesville.
The authors report no financial relationships relevant to this article.
In this question-and-answer article (the third in a series), our objective is to reinforce for the clinician several practical points of management for common infectious diseases. The principal references for the answers to the questions are 2 textbook chapters written by Dr. Duff.1,2 Other pertinent references are included in the text.
21. What prophylactic antibiotic should be administered intrapartum to a pregnant woman who is colonized with group B streptococci but who has a mild allergy to penicillin?
In this situation, the drug of choice is intravenous cefazolin, 2 g initially then 1 g every 8 hours until delivery. For patients with a severe allergy to penicillin, the drugs of choice are either clindamycin, 900 mg intravenously every 8 hours (if sensitivity of the organism is confirmed), or vancomycin, 20 mg/kg intravenously every 8 hours (maximum of 2 g per single dose).
22. In a pregnant woman who has a life-threatening allergy to penicillin, what is the most appropriate treatment for syphilis?
This patient should be admitted to the hospital and rapidly desensitized to penicillin. She then can be treated with the appropriate dose of penicillin, given her stage of syphilis. Of note, in the future, the patient’s allergy to penicillin will return, despite the brief period of desensitization.
23. What are the most common organisms that cause chorioamnionitis and puerperal endometritis?
Chorioamnionitis and puerperal endometritis are polymicrobial, mixed aerobic-anaerobic infections. The dominant organisms are anaerobic gram-negative bacilli (Bacteroides and Prevotella species); anaerobic gram-positive cocci (Peptococcus species and Peptostreptococcus species); aerobic gram-negative bacilli (principally, Escherichia coli, Klebsiella pneumoniae, and Proteus species); and aerobic gram-positive cocci (enterococci, staphylococci, and group B streptococci). ●
In this question-and-answer article (the third in a series), our objective is to reinforce for the clinician several practical points of management for common infectious diseases. The principal references for the answers to the questions are 2 textbook chapters written by Dr. Duff.1,2 Other pertinent references are included in the text.
21. What prophylactic antibiotic should be administered intrapartum to a pregnant woman who is colonized with group B streptococci but who has a mild allergy to penicillin?
In this situation, the drug of choice is intravenous cefazolin, 2 g initially then 1 g every 8 hours until delivery. For patients with a severe allergy to penicillin, the drugs of choice are either clindamycin, 900 mg intravenously every 8 hours (if sensitivity of the organism is confirmed), or vancomycin, 20 mg/kg intravenously every 8 hours (maximum of 2 g per single dose).
22. In a pregnant woman who has a life-threatening allergy to penicillin, what is the most appropriate treatment for syphilis?
This patient should be admitted to the hospital and rapidly desensitized to penicillin. She then can be treated with the appropriate dose of penicillin, given her stage of syphilis. Of note, in the future, the patient’s allergy to penicillin will return, despite the brief period of desensitization.
23. What are the most common organisms that cause chorioamnionitis and puerperal endometritis?
Chorioamnionitis and puerperal endometritis are polymicrobial, mixed aerobic-anaerobic infections. The dominant organisms are anaerobic gram-negative bacilli (Bacteroides and Prevotella species); anaerobic gram-positive cocci (Peptococcus species and Peptostreptococcus species); aerobic gram-negative bacilli (principally, Escherichia coli, Klebsiella pneumoniae, and Proteus species); and aerobic gram-positive cocci (enterococci, staphylococci, and group B streptococci). ●
- Duff P. Maternal and perinatal infections: bacterial. In: Landon MB, Galan HL, Jauniaux ERM, et al. Gabbe’s Obstetrics: Normal and Problem Pregnancies. 8th ed. Elsevier; 2021:1124-1146.
- Duff P. Maternal and fetal infections. In: Resnik R, Lockwood CJ, Moore TJ, et al. Creasy & Resnik’s Maternal-Fetal Medicine: Principles and Practice. 8th ed. Elsevier; 2019:862-919.
- Duff P. Maternal and perinatal infections: bacterial. In: Landon MB, Galan HL, Jauniaux ERM, et al. Gabbe’s Obstetrics: Normal and Problem Pregnancies. 8th ed. Elsevier; 2021:1124-1146.
- Duff P. Maternal and fetal infections. In: Resnik R, Lockwood CJ, Moore TJ, et al. Creasy & Resnik’s Maternal-Fetal Medicine: Principles and Practice. 8th ed. Elsevier; 2019:862-919.
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Infectious disease pop quiz: Clinical challenge #21 for the ObGyn
What prophylactic antibiotic should be administered intrapartum to a pregnant woman who is colonized with group B streptococci but who has a mild allergy to penicillin?
Continue to the answer...
In this situation, the drug of choice is intravenous cefazolin, 2 g initially then 1 g every 8 hours until delivery. For patients with a severe allergy to penicillin, the drugs of choice are either clindamycin, 900 mg intravenously every 8 hours (if sensitivity of the organism is confirmed), or vancomycin, 20 mg/kg intravenously every 8 hours (maximum of 2 g per single dose).
- Duff P. Maternal and perinatal infections: bacterial. In: Landon MB, Galan HL, Jauniaux ERM, et al. Gabbe’s Obstetrics: Normal and Problem Pregnancies. 8th ed. Elsevier; 2021:1124-1146.
- Duff P. Maternal and fetal infections. In: Resnik R, Lockwood CJ, Moore TJ, et al. Creasy & Resnik’s Maternal-Fetal Medicine: Principles and Practice. 8th ed. Elsevier; 2019:862-919.
Dr. Edwards is a Resident in the Department of Medicine, University of Florida College of Medicine, Gainesville.
Dr. Duff is Professor of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Florida College of Medicine, Gainesville.
The authors report no financial relationships relevant to this article.
Dr. Edwards is a Resident in the Department of Medicine, University of Florida College of Medicine, Gainesville.
Dr. Duff is Professor of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Florida College of Medicine, Gainesville.
The authors report no financial relationships relevant to this article.
Dr. Edwards is a Resident in the Department of Medicine, University of Florida College of Medicine, Gainesville.
Dr. Duff is Professor of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Florida College of Medicine, Gainesville.
The authors report no financial relationships relevant to this article.
What prophylactic antibiotic should be administered intrapartum to a pregnant woman who is colonized with group B streptococci but who has a mild allergy to penicillin?
Continue to the answer...
In this situation, the drug of choice is intravenous cefazolin, 2 g initially then 1 g every 8 hours until delivery. For patients with a severe allergy to penicillin, the drugs of choice are either clindamycin, 900 mg intravenously every 8 hours (if sensitivity of the organism is confirmed), or vancomycin, 20 mg/kg intravenously every 8 hours (maximum of 2 g per single dose).
What prophylactic antibiotic should be administered intrapartum to a pregnant woman who is colonized with group B streptococci but who has a mild allergy to penicillin?
Continue to the answer...
In this situation, the drug of choice is intravenous cefazolin, 2 g initially then 1 g every 8 hours until delivery. For patients with a severe allergy to penicillin, the drugs of choice are either clindamycin, 900 mg intravenously every 8 hours (if sensitivity of the organism is confirmed), or vancomycin, 20 mg/kg intravenously every 8 hours (maximum of 2 g per single dose).
- Duff P. Maternal and perinatal infections: bacterial. In: Landon MB, Galan HL, Jauniaux ERM, et al. Gabbe’s Obstetrics: Normal and Problem Pregnancies. 8th ed. Elsevier; 2021:1124-1146.
- Duff P. Maternal and fetal infections. In: Resnik R, Lockwood CJ, Moore TJ, et al. Creasy & Resnik’s Maternal-Fetal Medicine: Principles and Practice. 8th ed. Elsevier; 2019:862-919.
- Duff P. Maternal and perinatal infections: bacterial. In: Landon MB, Galan HL, Jauniaux ERM, et al. Gabbe’s Obstetrics: Normal and Problem Pregnancies. 8th ed. Elsevier; 2021:1124-1146.
- Duff P. Maternal and fetal infections. In: Resnik R, Lockwood CJ, Moore TJ, et al. Creasy & Resnik’s Maternal-Fetal Medicine: Principles and Practice. 8th ed. Elsevier; 2019:862-919.
Infectious disease pop quiz: Clinical challenge #20 for the ObGyn
What are the principal microorganisms that cause puerperal mastitis?
Continue to the answer...
Staphylococci and Streptococcus viridans are the 2 dominant microorganisms that cause puerperal mastitis. For the initial treatment of mastitis, the drug of choice is dicloxacillin sodium (500 mg orally every 6 to 8 hours for 7 to 10 days). If the patient has a mild allergy to penicillin, cephalexin (500 mg orally every 6 to 8 hours for 7 to 10 days) is an appropriate alternative. If the allergy to penicillin is severe or if methicillin-resistant Staphylococcus aureus (MRSA) infection is suspected, either clindamycin (300 mg orally twice daily for 7 to 10 days) or trimethoprim-sulfamethoxazole double strength orally twice daily for 7 to 10 days should be used.
- Duff P. Maternal and perinatal infections: bacterial. In: Landon MB, Galan HL, Jauniaux ERM, et al. Gabbe’s Obstetrics: Normal and Problem Pregnancies. 8th ed. Elsevier; 2021:1124-1146.
- Duff P. Maternal and fetal infections. In: Resnik R, Lockwood CJ, Moore TJ, et al. Creasy & Resnik’s Maternal-Fetal Medicine: Principles and Practice. 8th ed. Elsevier; 2019:862-919.
Dr. Edwards is a Resident in the Department of Medicine, University of Florida College of Medicine, Gainesville.
Dr. Duff is Professor of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Florida College of Medicine, Gainesville.
The authors report no financial relationships relevant to this article.
Dr. Edwards is a Resident in the Department of Medicine, University of Florida College of Medicine, Gainesville.
Dr. Duff is Professor of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Florida College of Medicine, Gainesville.
The authors report no financial relationships relevant to this article.
Dr. Edwards is a Resident in the Department of Medicine, University of Florida College of Medicine, Gainesville.
Dr. Duff is Professor of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Florida College of Medicine, Gainesville.
The authors report no financial relationships relevant to this article.
What are the principal microorganisms that cause puerperal mastitis?
Continue to the answer...
Staphylococci and Streptococcus viridans are the 2 dominant microorganisms that cause puerperal mastitis. For the initial treatment of mastitis, the drug of choice is dicloxacillin sodium (500 mg orally every 6 to 8 hours for 7 to 10 days). If the patient has a mild allergy to penicillin, cephalexin (500 mg orally every 6 to 8 hours for 7 to 10 days) is an appropriate alternative. If the allergy to penicillin is severe or if methicillin-resistant Staphylococcus aureus (MRSA) infection is suspected, either clindamycin (300 mg orally twice daily for 7 to 10 days) or trimethoprim-sulfamethoxazole double strength orally twice daily for 7 to 10 days should be used.
What are the principal microorganisms that cause puerperal mastitis?
Continue to the answer...
Staphylococci and Streptococcus viridans are the 2 dominant microorganisms that cause puerperal mastitis. For the initial treatment of mastitis, the drug of choice is dicloxacillin sodium (500 mg orally every 6 to 8 hours for 7 to 10 days). If the patient has a mild allergy to penicillin, cephalexin (500 mg orally every 6 to 8 hours for 7 to 10 days) is an appropriate alternative. If the allergy to penicillin is severe or if methicillin-resistant Staphylococcus aureus (MRSA) infection is suspected, either clindamycin (300 mg orally twice daily for 7 to 10 days) or trimethoprim-sulfamethoxazole double strength orally twice daily for 7 to 10 days should be used.
- Duff P. Maternal and perinatal infections: bacterial. In: Landon MB, Galan HL, Jauniaux ERM, et al. Gabbe’s Obstetrics: Normal and Problem Pregnancies. 8th ed. Elsevier; 2021:1124-1146.
- Duff P. Maternal and fetal infections. In: Resnik R, Lockwood CJ, Moore TJ, et al. Creasy & Resnik’s Maternal-Fetal Medicine: Principles and Practice. 8th ed. Elsevier; 2019:862-919.
- Duff P. Maternal and perinatal infections: bacterial. In: Landon MB, Galan HL, Jauniaux ERM, et al. Gabbe’s Obstetrics: Normal and Problem Pregnancies. 8th ed. Elsevier; 2021:1124-1146.
- Duff P. Maternal and fetal infections. In: Resnik R, Lockwood CJ, Moore TJ, et al. Creasy & Resnik’s Maternal-Fetal Medicine: Principles and Practice. 8th ed. Elsevier; 2019:862-919.
Infectious disease pop quiz: Clinical challenge #19 for the ObGyn
Should a postpartum patient with chronic hepatitis C infection be discouraged from breastfeeding her infant?
Continue to the answer...
Hepatitis C is not a contraindication to breastfeeding. Although the virus has been identified in breast milk, the risk of transmission to the infant is exceedingly low.
- Duff P. Maternal and perinatal infections: bacterial. In: Landon MB, Galan HL, Jauniaux ERM, et al. Gabbe’s Obstetrics: Normal and Problem Pregnancies. 8th ed. Elsevier; 2021:1124-1146.
- Duff P. Maternal and fetal infections. In: Resnik R, Lockwood CJ, Moore TJ, et al. Creasy & Resnik’s Maternal-Fetal Medicine: Principles and Practice. 8th ed. Elsevier; 2019:862-919.
Dr. Edwards is a Resident in the Department of Medicine, University of Florida College of Medicine, Gainesville.
Dr. Duff is Professor of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Florida College of Medicine, Gainesville.
The authors report no financial relationships relevant to this article.
Dr. Edwards is a Resident in the Department of Medicine, University of Florida College of Medicine, Gainesville.
Dr. Duff is Professor of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Florida College of Medicine, Gainesville.
The authors report no financial relationships relevant to this article.
Dr. Edwards is a Resident in the Department of Medicine, University of Florida College of Medicine, Gainesville.
Dr. Duff is Professor of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Florida College of Medicine, Gainesville.
The authors report no financial relationships relevant to this article.
Should a postpartum patient with chronic hepatitis C infection be discouraged from breastfeeding her infant?
Continue to the answer...
Hepatitis C is not a contraindication to breastfeeding. Although the virus has been identified in breast milk, the risk of transmission to the infant is exceedingly low.
Should a postpartum patient with chronic hepatitis C infection be discouraged from breastfeeding her infant?
Continue to the answer...
Hepatitis C is not a contraindication to breastfeeding. Although the virus has been identified in breast milk, the risk of transmission to the infant is exceedingly low.
- Duff P. Maternal and perinatal infections: bacterial. In: Landon MB, Galan HL, Jauniaux ERM, et al. Gabbe’s Obstetrics: Normal and Problem Pregnancies. 8th ed. Elsevier; 2021:1124-1146.
- Duff P. Maternal and fetal infections. In: Resnik R, Lockwood CJ, Moore TJ, et al. Creasy & Resnik’s Maternal-Fetal Medicine: Principles and Practice. 8th ed. Elsevier; 2019:862-919.
- Duff P. Maternal and perinatal infections: bacterial. In: Landon MB, Galan HL, Jauniaux ERM, et al. Gabbe’s Obstetrics: Normal and Problem Pregnancies. 8th ed. Elsevier; 2021:1124-1146.
- Duff P. Maternal and fetal infections. In: Resnik R, Lockwood CJ, Moore TJ, et al. Creasy & Resnik’s Maternal-Fetal Medicine: Principles and Practice. 8th ed. Elsevier; 2019:862-919.
Infectious disease pop quiz: Clinical challenge #18 for the ObGyn
What antenatal treatment is indicated in a pregnant woman at 28 weeks’ gestation who has a hepatitis B viral load of 2 million copies/mL?
Continue to the answer...
This patient has a markedly elevated viral load and is at significantly increased risk of transmitting hepatitis B infection to her neonate even if the infant receives hepatitis B immune globulin immediately after birth and quickly begins the hepatitis B vaccine series. Daily antenatal treatment with tenofovir (300 mg daily) from 28 weeks until delivery will significantly reduce the risk of perinatal transmission.
- Duff P. Maternal and perinatal infections: bacterial. In: Landon MB, Galan HL, Jauniaux ERM, et al. Gabbe’s Obstetrics: Normal and Problem Pregnancies. 8th ed. Elsevier; 2021:1124-1146.
- Duff P. Maternal and fetal infections. In: Resnik R, Lockwood CJ, Moore TJ, et al. Creasy & Resnik’s Maternal-Fetal Medicine: Principles and Practice. 8th ed. Elsevier; 2019:862-919.
Dr. Edwards is a Resident in the Department of Medicine, University of Florida College of Medicine, Gainesville.
Dr. Duff is Professor of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Florida College of Medicine, Gainesville.
The authors report no financial relationships relevant to this article.
Dr. Edwards is a Resident in the Department of Medicine, University of Florida College of Medicine, Gainesville.
Dr. Duff is Professor of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Florida College of Medicine, Gainesville.
The authors report no financial relationships relevant to this article.
What antenatal treatment is indicated in a pregnant woman at 28 weeks’ gestation who has a hepatitis B viral load of 2 million copies/mL?
Continue to the answer...
This patient has a markedly elevated viral load and is at significantly increased risk of transmitting hepatitis B infection to her neonate even if the infant receives hepatitis B immune globulin immediately after birth and quickly begins the hepatitis B vaccine series. Daily antenatal treatment with tenofovir (300 mg daily) from 28 weeks until delivery will significantly reduce the risk of perinatal transmission.
What antenatal treatment is indicated in a pregnant woman at 28 weeks’ gestation who has a hepatitis B viral load of 2 million copies/mL?
Continue to the answer...
This patient has a markedly elevated viral load and is at significantly increased risk of transmitting hepatitis B infection to her neonate even if the infant receives hepatitis B immune globulin immediately after birth and quickly begins the hepatitis B vaccine series. Daily antenatal treatment with tenofovir (300 mg daily) from 28 weeks until delivery will significantly reduce the risk of perinatal transmission.
- Duff P. Maternal and perinatal infections: bacterial. In: Landon MB, Galan HL, Jauniaux ERM, et al. Gabbe’s Obstetrics: Normal and Problem Pregnancies. 8th ed. Elsevier; 2021:1124-1146.
- Duff P. Maternal and fetal infections. In: Resnik R, Lockwood CJ, Moore TJ, et al. Creasy & Resnik’s Maternal-Fetal Medicine: Principles and Practice. 8th ed. Elsevier; 2019:862-919.
- Duff P. Maternal and perinatal infections: bacterial. In: Landon MB, Galan HL, Jauniaux ERM, et al. Gabbe’s Obstetrics: Normal and Problem Pregnancies. 8th ed. Elsevier; 2021:1124-1146.
- Duff P. Maternal and fetal infections. In: Resnik R, Lockwood CJ, Moore TJ, et al. Creasy & Resnik’s Maternal-Fetal Medicine: Principles and Practice. 8th ed. Elsevier; 2019:862-919.
Infectious disease pop quiz: Clinical challenge #17 for the ObGyn
What are the best tests for identification of a patient with chronic hepatitis B infection?
Continue to the answer...
Patients with chronic hepatitis B infection typically test positive for the hepatitis B surface antigen (HBsAg) and for IgG antibody to the hepatitis B core antigen (HBcAg). In addition, they also may test positive for the hepatitis B e antigen (HBeAg), and their viral load can be quantified by polymerase chain reaction (PCR) when significant antigenemia is present. The presence of the e antigen indicates a high rate of viral replication and a corresponding high rate of infectivity.
- Duff P. Maternal and perinatal infections: bacterial. In: Landon MB, Galan HL, Jauniaux ERM, et al. Gabbe’s Obstetrics: Normal and Problem Pregnancies. 8th ed. Elsevier; 2021:1124-1146.
- Duff P. Maternal and fetal infections. In: Resnik R, Lockwood CJ, Moore TJ, et al. Creasy & Resnik’s Maternal-Fetal Medicine: Principles and Practice. 8th ed. Elsevier; 2019:862-919.
What are the best tests for identification of a patient with chronic hepatitis B infection?
Continue to the answer...
Patients with chronic hepatitis B infection typically test positive for the hepatitis B surface antigen (HBsAg) and for IgG antibody to the hepatitis B core antigen (HBcAg). In addition, they also may test positive for the hepatitis B e antigen (HBeAg), and their viral load can be quantified by polymerase chain reaction (PCR) when significant antigenemia is present. The presence of the e antigen indicates a high rate of viral replication and a corresponding high rate of infectivity.
What are the best tests for identification of a patient with chronic hepatitis B infection?
Continue to the answer...
Patients with chronic hepatitis B infection typically test positive for the hepatitis B surface antigen (HBsAg) and for IgG antibody to the hepatitis B core antigen (HBcAg). In addition, they also may test positive for the hepatitis B e antigen (HBeAg), and their viral load can be quantified by polymerase chain reaction (PCR) when significant antigenemia is present. The presence of the e antigen indicates a high rate of viral replication and a corresponding high rate of infectivity.
- Duff P. Maternal and perinatal infections: bacterial. In: Landon MB, Galan HL, Jauniaux ERM, et al. Gabbe’s Obstetrics: Normal and Problem Pregnancies. 8th ed. Elsevier; 2021:1124-1146.
- Duff P. Maternal and fetal infections. In: Resnik R, Lockwood CJ, Moore TJ, et al. Creasy & Resnik’s Maternal-Fetal Medicine: Principles and Practice. 8th ed. Elsevier; 2019:862-919.
- Duff P. Maternal and perinatal infections: bacterial. In: Landon MB, Galan HL, Jauniaux ERM, et al. Gabbe’s Obstetrics: Normal and Problem Pregnancies. 8th ed. Elsevier; 2021:1124-1146.
- Duff P. Maternal and fetal infections. In: Resnik R, Lockwood CJ, Moore TJ, et al. Creasy & Resnik’s Maternal-Fetal Medicine: Principles and Practice. 8th ed. Elsevier; 2019:862-919.
Infectious disease pop quiz: Clinical challenge #16 for the ObGyn
What is the best test for the diagnosis of acute hepatitis A infection?
Continue to the answer...
The single best test for the diagnosis of acute hepatitis A infection is detection of immunoglobulin M (IgM)–specific antibody to the virus.
- Duff P. Maternal and perinatal infections: bacterial. In: Landon MB, Galan HL, Jauniaux ERM, et al. Gabbe’s Obstetrics: Normal and Problem Pregnancies. 8th ed. Elsevier; 2021:1124-1146.
- Duff P. Maternal and fetal infections. In: Resnik R, Lockwood CJ, Moore TJ, et al. Creasy & Resnik’s Maternal-Fetal Medicine: Principles and Practice. 8th ed. Elsevier; 2019:862-919.
What is the best test for the diagnosis of acute hepatitis A infection?
Continue to the answer...
The single best test for the diagnosis of acute hepatitis A infection is detection of immunoglobulin M (IgM)–specific antibody to the virus.
What is the best test for the diagnosis of acute hepatitis A infection?
Continue to the answer...
The single best test for the diagnosis of acute hepatitis A infection is detection of immunoglobulin M (IgM)–specific antibody to the virus.
- Duff P. Maternal and perinatal infections: bacterial. In: Landon MB, Galan HL, Jauniaux ERM, et al. Gabbe’s Obstetrics: Normal and Problem Pregnancies. 8th ed. Elsevier; 2021:1124-1146.
- Duff P. Maternal and fetal infections. In: Resnik R, Lockwood CJ, Moore TJ, et al. Creasy & Resnik’s Maternal-Fetal Medicine: Principles and Practice. 8th ed. Elsevier; 2019:862-919.
- Duff P. Maternal and perinatal infections: bacterial. In: Landon MB, Galan HL, Jauniaux ERM, et al. Gabbe’s Obstetrics: Normal and Problem Pregnancies. 8th ed. Elsevier; 2021:1124-1146.
- Duff P. Maternal and fetal infections. In: Resnik R, Lockwood CJ, Moore TJ, et al. Creasy & Resnik’s Maternal-Fetal Medicine: Principles and Practice. 8th ed. Elsevier; 2019:862-919.