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August 10, 2016/Digestive/News

New Clinical Guidelines Make Bariatric Surgery Accessible to Mildly Obese Diabetics

Randomized control trials support surgery’s role in managing blood sugar

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Figure 1: Diagrams of the four bariatric operations currently in common clinical use.

Figure 1: Diagrams of the four bariatric operations currently in common clinical use.

Physicians around the world recognize diabetes as a global health crisis. The International Diabetes Federation reports that 415 million people around the world have this condition. The vast majority of these patients have type 2 diabetes mellitus (T2D). Unfortunately, fewer than half of adults with T2D successfully control their blood sugar with medication and lifestyle interventions, according to Diabetes Care.

Until recently, bariatric surgery was not considered a standard treatment option for patients with T2D. Thanks to recent clinical trials, including the STAMPEDE trial conducted by Cleveland Clinic, the American Diabetes Association has published new guidelines to validate the efficacy of bariatric surgery and regulate its usage in diabetics with lower BMI thresholds. These guidelines are designed to help physicians get their patients with T2D in control of their condition when medication and lifestyle changes have failed.

Randomized clinical trials for surgical validation

For the past 10 years, health experts from around the world have been working to clearly define the role of surgery in the treatment of diabetes. Philip Schauer, MD, Director of Cleveland Clinic’s Bariatric and Metabolic Institute, led clinical trials designed to compare the efficacy of surgery versus medication and lifestyle interventions. Of the clinical trials conducted, the STAMPEDE trial was the largest randomized control trial.

“Before 2007, there were almost no randomized control trials in this field,” reveals Dr. Schauer. “Now we have results from 11 randomized control trials that demonstrate bariatric surgery’s superiority to medical therapy. This research has significantly improved the quantity and quality of evidence needed to enhance diabetic treatment algorithms.”

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Modified BMI thresholds for better patients outcomes

The new clinical guidelines for diabetes care include about 30 recommendations endorsed by 45 global diabetes medical and surgical organizations. The following modified BMI thresholds allow patients with mild obesity to qualify for surgical intervention before developing serious diabetes-related complications:

  • By dropping the BMI threshold from 35 to 30, about 3 to 5 million more patients in the U.S. may be eligible for bariatric surgery to improve blood sugar and the serum markers of blood sugar.
  • For patients of Asian descent, the BMI threshold has been lowered to 27.5. This specification was included since Asians tend to have more severe cases of diabetes at lower body weights than other nationalities.
Figure 2: Algorithm for the treatment of T2D.

Figure 2: Algorithm for the treatment of T2D.

Enhanced patient education and standard of care

The new guidelines help educate patients and doctors on bariatric surgery and the ways to minimize risks when using it to treat T2D. By including surgery as part of a comprehensive treatment program, doctors and surgeons can safely care for all the medical needs of the patient.

In addition to education, the new guidelines have financial benefits for patients. As more commercial insurance companies review the new standards for diabetes treatment, they’ll be encouraged to provide full coverage for patients with lower BMIs so that they can get the financial support needed to undergo bariatric surgery.

Reduced complications and improved remission

“Prior to the new guidelines, physicians only had two strategies for treating T2D: drugs and diet/exercise,” explains Dr. Schauer. “Now doctors have a third evidence-based method — surgery — to help patients achieve superior glycemic control and reduce their risk of heart attack, stroke, blindness and renal failure.” The new guidelines may even help patients with T2D achieve remission (normal blood sugar without medications) if surgery is used early in the course of disease progression.

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