Evaluation of the Association Between Preoperative Clinical Factors and Long-term Weight Loss After Roux-en-Y Gastric...

Area of Science:

• Bariatric surgery outcomes
• Clinical factors in weight management

Background:

• Weight loss after bariatric surgery, specifically Roux-en-Y gastric bypass (RYGB), is variable.
• Understanding preoperative factors linked to long-term suboptimal weight loss is crucial for patient selection and management.

Purpose of the Study:

• To investigate the association between preoperative clinical factors and long-term weight loss (7-12 years) following RYGB.
• To identify predictors of successful and unsuccessful long-term weight management after RYGB.

Main Methods:

• Retrospective cohort study of 726 RYGB patients followed for 7-12 years post-surgery.
• Extracted over 200 preoperative clinical factors including demographics, comorbidities, medications, and lab results.
• Analyzed the correlation between preoperative factors and percentage weight loss (%WL) at long-term follow-up.

Main Results:

• Mean long-term %WL was 22.5%.
• Preoperative insulin use, smoking history, and use of ≥12 medications were associated with greater %WL.
• Preoperative hyperlipidemia, older age, and higher BMI were associated with poorer %WL.

Conclusions:

• Few preoperative factors significantly predict long-term weight loss after RYGB.
• Insulin use is a positive predictor, while hyperlipidemia, older age, and higher BMI are negative predictors of long-term %WL.
• Findings aid in identifying RYGB patients at risk for suboptimal long-term outcomes.