For many people facing kidney surgery, one of the biggest concerns is recovery. That concern can be even greater for patients with obesity or a higher body mass index (BMI), who may face a higher risk of wound complications after traditional open surgery.
Advances in robotic surgery are helping surgeons perform complex kidney procedures through smaller incisions, offering another option for some patients who may benefit from a less invasive approach.
"Historically, patients with a higher BMI have faced additional challenges when undergoing major abdominal surgery," said Phillipe Abreu, MD, Director of Robotic Transplantation, Tufts Medical Center and assistant professor, Tufts University School of Medicine. "Robotic surgery allows us to perform these procedures through much smaller incisions, which can help reduce some of the risks associated with larger surgical wounds."
During robotic kidney surgery, surgeons control robotic instruments from a nearby console. The technology provides a highly magnified, three-dimensional view of the surgical field and allows surgeons to make precise movements in areas that can be difficult to access through traditional open surgery.
For patients, the biggest difference is often what they don't see: a large incision.
"One of the advantages of robotic surgery is that we're able to achieve the same surgical goals while minimizing trauma to the abdominal wall," Dr. Abreu said. "That can translate into less pain, fewer wound-related complications and a smoother recovery for many patients."
Research has shown that robotic kidney procedures can be performed safely in patients with obesity and even morbid obesity, with outcomes comparable to those seen in patients with lower BMIs. Studies have also found that obesity does not appear to significantly increase complication rates following robotic kidney surgery.
While robotic surgery is not the right choice for every patient, it has expanded treatment options for many people who may have previously faced additional barriers to surgery.
"The most important thing patients should know is that a higher BMI doesn't automatically prevent someone from being a candidate for kidney surgery," Dr. Abreu said. "Every patient deserves an individualized evaluation, and today's surgical technologies allow us to care for patients who may have been considered higher risk in the past."
Frequently asked questions about robotic kidney surgery and BMI
What is BMI?
BMI, or body mass index, is a screening tool that estimates body fat based on height and weight. While BMI can be useful, it does not tell the whole story about a person's health. Surgeons consider many factors when evaluating someone for kidney surgery, including overall health, medical history and physical fitness.
Is robotic kidney surgery safer for people with obesity?
Every patient is different, but robotic surgery may help reduce some risks associated with larger incisions, including wound infections and healing problems. The smaller incisions used in robotic surgery can be especially beneficial for patients with a higher BMI. Studies have found comparable surgical outcomes among patients across a range of BMI categories.
Can you have robotic kidney surgery if your BMI is over 40?
In many cases, yes. Research has shown that robotic kidney procedures can be performed safely in patients with a BMI greater than 40. Eligibility depends on several factors, including the type of surgery needed and the patient's overall health.
Does robotic kidney surgery mean a faster recovery?
Many patients experience less pain and shorter hospital stays compared with traditional open surgery because robotic procedures require smaller incisions. Recovery times vary based on the individual patient and the complexity of the procedure.
What types of kidney surgery can be performed robotically?
Robotic technology may be used for several kidney procedures, including kidney removal (nephrectomy), partial nephrectomy, living donor kidney surgery and kidney transplantation in select patients.
Am I a candidate for robotic kidney surgery?
The best way to find out is to meet with a surgeon who specializes in kidney surgery. Your care team will evaluate your medical history, kidney condition and overall health to determine which approach is safest and most effective for you.
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The bottom line
A higher BMI does not automatically rule out kidney surgery. For many patients, robotic-assisted procedures can provide a minimally invasive option that may reduce wound complications and support recovery while delivering the same surgical outcomes as traditional approaches. The right approach depends on each person’s individual situation, goals and overall health.
Learn how the transplant experts at Tufts Medicine use advanced robotic surgery to expand kidney transplant options and support living kidney donation.
