The case for closing robotic surgery port sites

 

JACKSONVILLE, FLA. – Hernias that occur through small port sites used in robotic surgery do not occur frequently, but when they do, they can cause significant harm to the patients. Findings from a retrospective chart review of robotic operations performed over 6 years has identified situations in which surgeons may consider closing 8-mm port sites after robotic surgery, according to a presentation at the Association for Academic Surgery/Society of University Surgeons Academic Surgical Congress.

Master Video/Shutterstock

In reporting the results, Ramon Diez-Barroso, MD, of Baylor College of Medicine, Houston, acknowledged the low incidence of robotic port–site hernias in the study group – 0.8% of 12-mm port sites and 0.7% of 8-mm port sites. These percentages represent two and three ports, respectively. The study involved 178 patients who had general surgery and oncologic procedures between July 2010 and December 2016, with a total of 725 ports. The 8-mm sites were not closed, whereas the larger port sites were.

“Although the incidence of hernia through the 8-mm port sites was low, it’s still important because it’s a significant cause of morbidity in these patients,” Dr. Diez-Barroso said. Two of the three 8-mm port-site hernias required emergency surgery for small bowel incarceration.

“Both of the hernias occurred in the left lower quadrant in the lateral most port, near the anterior superior iliac spine,” he said. “The nearest site of muscle insertions was where the abdominal wall muscle layers have a limited ability to slide over one another during insufflation and desufflation and therefore have a lack of ability to seal off the port site correctly.”

 

These results have caused surgeons in his group to take a closer look at their own practices, Dr. Diez-Barroso said. “In our practice, now we’re considering closure of the ports in that location in the presence of known risk factors for hernia formation,” he said.

Dr. Diez-Barroso noted other scenarios when surgeons might consider closing 8-mm port sites, for example, after a prolonged operation, when significant torque has been placed on the port site, and in obese patients. The two cases of emergency surgery for port-site hernias involved obese patients: a female with a body mass index of 33 kg/m2 who had an abdominoperineal resection and a male with a BMI of 34 kg/m2 who had a right-sided ventral hernia repair.

The study had a number of limitations, Dr. Diez-Barroso said: its small sample size, retrospective nature, and short follow-up. “Moving forward, to understand better the true incidence of port-site hernias, we want further investigation with longer follow-up times and a larger sample size,” he said.

During questions, moderator Lesly Ann Dossett, MD, FACS, of the University of Michigan, Ann Arbor, asked whether there were other steps surgeons could take, such as where to place the ports or how much torque they apply, besides closing the ports.

 

“We’ve always placed ports with the standard approach: inserting them perpendicular to the abdominal wall,” Dr. Diez-Barroso said. “Others have theorized that the lateral sites undergo more torque, but I think that also needs further investigation.”

Dr. Diez-Barroso and coauthors reported having no financial disclosures.

Source: Diez-Barroso R. Academic Surgical Congress 2018.

 

JACKSONVILLE, FLA. – Hernias that occur through small port sites used in robotic surgery do not occur frequently, but when they do, they can cause significant harm to the patients. Findings from a retrospective chart review of robotic operations performed over 6 years has identified situations in which surgeons may consider closing 8-mm port sites after robotic surgery, according to a presentation at the Association for Academic Surgery/Society of University Surgeons Academic Surgical Congress.

Master Video/Shutterstock

In reporting the results, Ramon Diez-Barroso, MD, of Baylor College of Medicine, Houston, acknowledged the low incidence of robotic port–site hernias in the study group – 0.8% of 12-mm port sites and 0.7% of 8-mm port sites. These percentages represent two and three ports, respectively. The study involved 178 patients who had general surgery and oncologic procedures between July 2010 and December 2016, with a total of 725 ports. The 8-mm sites were not closed, whereas the larger port sites were.

“Although the incidence of hernia through the 8-mm port sites was low, it’s still important because it’s a significant cause of morbidity in these patients,” Dr. Diez-Barroso said. Two of the three 8-mm port-site hernias required emergency surgery for small bowel incarceration.

“Both of the hernias occurred in the left lower quadrant in the lateral most port, near the anterior superior iliac spine,” he said. “The nearest site of muscle insertions was where the abdominal wall muscle layers have a limited ability to slide over one another during insufflation and desufflation and therefore have a lack of ability to seal off the port site correctly.”

 

These results have caused surgeons in his group to take a closer look at their own practices, Dr. Diez-Barroso said. “In our practice, now we’re considering closure of the ports in that location in the presence of known risk factors for hernia formation,” he said.

Dr. Diez-Barroso noted other scenarios when surgeons might consider closing 8-mm port sites, for example, after a prolonged operation, when significant torque has been placed on the port site, and in obese patients. The two cases of emergency surgery for port-site hernias involved obese patients: a female with a body mass index of 33 kg/m2 who had an abdominoperineal resection and a male with a BMI of 34 kg/m2 who had a right-sided ventral hernia repair.

The study had a number of limitations, Dr. Diez-Barroso said: its small sample size, retrospective nature, and short follow-up. “Moving forward, to understand better the true incidence of port-site hernias, we want further investigation with longer follow-up times and a larger sample size,” he said.

During questions, moderator Lesly Ann Dossett, MD, FACS, of the University of Michigan, Ann Arbor, asked whether there were other steps surgeons could take, such as where to place the ports or how much torque they apply, besides closing the ports.

 

“We’ve always placed ports with the standard approach: inserting them perpendicular to the abdominal wall,” Dr. Diez-Barroso said. “Others have theorized that the lateral sites undergo more torque, but I think that also needs further investigation.”

Dr. Diez-Barroso and coauthors reported having no financial disclosures.

Source: Diez-Barroso R. Academic Surgical Congress 2018.

 

JACKSONVILLE, FLA. – Hernias that occur through small port sites used in robotic surgery do not occur frequently, but when they do, they can cause significant harm to the patients. Findings from a retrospective chart review of robotic operations performed over 6 years has identified situations in which surgeons may consider closing 8-mm port sites after robotic surgery, according to a presentation at the Association for Academic Surgery/Society of University Surgeons Academic Surgical Congress.

Master Video/Shutterstock

In reporting the results, Ramon Diez-Barroso, MD, of Baylor College of Medicine, Houston, acknowledged the low incidence of robotic port–site hernias in the study group – 0.8% of 12-mm port sites and 0.7% of 8-mm port sites. These percentages represent two and three ports, respectively. The study involved 178 patients who had general surgery and oncologic procedures between July 2010 and December 2016, with a total of 725 ports. The 8-mm sites were not closed, whereas the larger port sites were.

“Although the incidence of hernia through the 8-mm port sites was low, it’s still important because it’s a significant cause of morbidity in these patients,” Dr. Diez-Barroso said. Two of the three 8-mm port-site hernias required emergency surgery for small bowel incarceration.

“Both of the hernias occurred in the left lower quadrant in the lateral most port, near the anterior superior iliac spine,” he said. “The nearest site of muscle insertions was where the abdominal wall muscle layers have a limited ability to slide over one another during insufflation and desufflation and therefore have a lack of ability to seal off the port site correctly.”

 

These results have caused surgeons in his group to take a closer look at their own practices, Dr. Diez-Barroso said. “In our practice, now we’re considering closure of the ports in that location in the presence of known risk factors for hernia formation,” he said.

Dr. Diez-Barroso noted other scenarios when surgeons might consider closing 8-mm port sites, for example, after a prolonged operation, when significant torque has been placed on the port site, and in obese patients. The two cases of emergency surgery for port-site hernias involved obese patients: a female with a body mass index of 33 kg/m2 who had an abdominoperineal resection and a male with a BMI of 34 kg/m2 who had a right-sided ventral hernia repair.

The study had a number of limitations, Dr. Diez-Barroso said: its small sample size, retrospective nature, and short follow-up. “Moving forward, to understand better the true incidence of port-site hernias, we want further investigation with longer follow-up times and a larger sample size,” he said.

During questions, moderator Lesly Ann Dossett, MD, FACS, of the University of Michigan, Ann Arbor, asked whether there were other steps surgeons could take, such as where to place the ports or how much torque they apply, besides closing the ports.

 

“We’ve always placed ports with the standard approach: inserting them perpendicular to the abdominal wall,” Dr. Diez-Barroso said. “Others have theorized that the lateral sites undergo more torque, but I think that also needs further investigation.”

Dr. Diez-Barroso and coauthors reported having no financial disclosures.

Source: Diez-Barroso R. Academic Surgical Congress 2018.