Factors Associated With Weight Loss After Gastric Bypass

Campos, Guilherme M.; Rabl, Charlotte; Mulligan, Kathleen; Posselt, Andrew M.; Rogers, Stanley J.; Westphalen, Antonio C.; Lin, Feng; Vittinghoff, Eric

doi:10.1001/archsurg.143.9.877

Cited by 153 publications

(127 citation statements)

References 58 publications

(67 reference statements)

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“…It has been consistently reported that bariatric operations frequently lead to significant weight loss, which starts shortly after the surgical procedure, continues for some time and is thought to plateau for most individuals around 18 months after surgery, when maximal weight loss is reached. 9,[16][17][18][19][20][21] In our study, the GEE analysis suggested that the nadir of body weight loss occurs around the 4 th trimester after surgery, between the first and second years after surgery and this finding agrees with those previous reported.…”

Section: Discussionsupporting

confidence: 93%

“…Like Campos et al, 16 our results did not reveal evidence that preoperative body weight was associated with postoperative weight loss. On the other hand, Ochner et al 17 found that greater initial BMI were associated with worse postsurgical weight loss outcomes, but recommended caution when making comparisons, since results may vary, depending on the weight loss measure chosen and the time of postoperative period.…”

Section: Discussioncontrasting

confidence: 57%

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Obese patients lose weight independently of nutritional follow-up after bariatric surgery

Tess

Scabim

Santo

et al. 2015

Rev. Assoc. Med. Bras.

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Obese patients lOse weight independently Of nutritiOnal fOllOw-up after bariatric surgery rev assoC med bras 2015; 61 (2) Brazil). Data were collected through hospital records review and the variables analyzed included sex, age, immediate preoperative weight, adherence to postsurgical nutritional visits and length of postoperative period. Proportional body weight reductions during the 18-month follow-up period were examined using generalized estimating equations. Results: 81% (n=195) of participants were female, with overall mean age of 44.4 ± 11.6 years, mean preoperative weight of 123.1± 21.2 kg and mean preoperative body mass index of 47.2± 6.2 kg/m 2 . The overall adherence to postoperative follow-up schedule was 51% (95%CI: 44.5-57.5%). Preoperative body weight and adherence were not associated with proportional weight reduction (Wald's test p > 0.18). Weight loss leveled off at the end of the 18-month follow-up period for both compliant and non-compliant patients (Wald's test p = 0.00). Conclusions: our study showed that weight loss occurred steadily over the first 18 months after RYGBP, leveling off at around 40% weight reduction. It was associated with neither presurgical weight, nor nutritional follow-up and it may be primarily dependent on the surgical body alterations themselves. This finding may have implications for intervention strategies aimed at motivating patients to comply with early postsurgical and life-long follow-up.

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Section: Discussionsupporting

confidence: 93%

Section: Discussioncontrasting

confidence: 57%

Obese patients lose weight independently of nutritional follow-up after bariatric surgery

Tess

Scabim

Santo

et al. 2015

Rev. Assoc. Med. Bras.

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“…These results have been confirmed in small groups of non-obese subjects with T2D [20,21]. Preoperative BMI, weight loss, age, sex, hypoglycaemic drug use and diabetes duration also have an influence on the rate of remission and re-emergence of diabetes [1,2,4,10,[22][23][24][25][26][27][28][29][30]. The outcome of OGBP in terms of weight loss is excellent, with a weight loss at 3 years that is comparable or even superior to that reported for RYGBP.…”

Section: Discussionmentioning

confidence: 56%

“…In parallel, the rate of complete remission of T2D at 2 years is remarkable and lies between that obtained with RYGBP and BPD [9,[31][32][33][34]. If the weight loss is maintained over time, it could constitute a factor for long-term remission which is better than that obtained with RYGBP [4,9,23,24,29]. In our patients, preoperative BMI was not a predictive factor for remission of diabetes, even though the results were better in patients with a higher BMI.…”

Section: Discussionmentioning

confidence: 99%

Remission of type 2 diabetes after omega loop gastric bypass for morbid obesity

et al. 2015

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“…Campos and others have validated that principle with data revealing that pouch size is independently correlated with weight loss after primary RYGB [5,6]. Most patients who have regained weight post RYGB have evidence of a dilated stoma and/or gastric pouch [7].…”

Section: Resultsmentioning

confidence: 99%