Bariatric Surgery Outcomes in Sarcopenic Obesity

Area of Science:

• Metabolic Surgery
• Obesity Medicine
• Geriatric Medicine

Background:

• Sarcopenic obesity, characterized by low muscle mass and high fat mass, is linked to adverse health outcomes.
• The potential negative impact of sarcopenia on surgical weight loss outcomes is not well understood.

Purpose of the Study:

• To investigate the influence of sarcopenic obesity on the effectiveness of gastric bypass and sleeve gastrectomy.
• To evaluate weight loss and comorbidity resolution at 3, 6, and 12 months post-bariatric surgery.

Main Methods:

• Sixty-nine obese patients undergoing bariatric surgery were assessed for skeletal muscle mass using Janssen's equation.
• Physical performance and muscle strength were evaluated using the 6-min walk test and wall sit test.
• Sarcopenia was defined based on the lowest tertile of the Skeletal Muscle mass Index (SMI).

Main Results:

• Sarcopenia did not affect weight loss outcomes or the rate of weight loss failure post-surgery.
• At 1 year, sarcopenic patients showed similar excess body mass index loss (EBMIL%) compared to non-sarcopenic patients (75.4% vs. 67.8%).
• Comorbidity improvement rates and skeletal muscle mass were comparable between groups at 1 year.

Conclusions:

• Bariatric surgery is effective for weight loss in sarcopenic obese patients, with comparable comorbidity remission and safety to non-sarcopenic individuals.
• Further research is needed to assess the impact of bariatric surgery on functional autonomy and daily living activities in sarcopenic obese patients.