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The Influence of Pregnancy on Weight Loss After Previous Bariatric Surgery.
Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A 2023 September 22
Introduction: Bariatric surgery is routinely performed on obese women of reproductive age, most commonly with the laparoscopic sleeve gastrectomy (SG) and Roux-en-Y gastric bypass procedures (RYGB). This study analyzes the effects of postoperative pregnancy on excess BMI loss percentage (EBMIL%) after SG and RYGB. Methods: A retrospective study was conducted with 191 female patients of reproductive age between 20 and 40 years who underwent SG and RYGB performed at our institution between January 2017 and December 2018. A comparison of the results at 4-year follow-up was performed between patients who became pregnant after bariatric surgery with patients who did not. Results: Among 191 total cases, 32 (16.7%) patients became pregnant within a 4-year follow-up period, and 159 (83.2%) patients did not. The median postoperative body mass index (BMI) in the pregnant group was 33.3 kg/m2 (interquartile range [IQR] 30.1-38.5) and 33.5 kg/m2 (IQR 28.9-38.6) in the nonpregnant group. The mean EBMIL% within a 4-year follow-up in the pregnant group was 50.4% (standard deviation [SD] 23.5) and 55.5% (SD 30.4) in the nonpregnant group. The median weight before surgery in the pregnant group was 112 kg (IQR 107.9-132.2) and 117 kg (IQR 106-132.5) in the nonpregnant group. The median weight after surgery in the pregnant group was 89.5 kg (IQR 79.5-111) and 88.9 kg (IQR 78-103) in the nonpregnant group. There was no significant difference between outcomes. Conclusion: Weight loss maintenance after bariatric surgery is not impacted by postoperative pregnancy within a 4-year follow-up after SG and RYGB.
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