Impact of Roux-en-Y Gastric Bypass and Vertical Gastrectomy on weight loss: a retrospective and longitudinal study in the State of Paraná, Brazil

Abstract

Aim: to compare the impact of Roux’s Y Gastric Bypass (RYGB) and Sleeve Gastrectomy (SG) techniques on body weight reduction over 1 and 5 years after bariatric surgery in obese patients in the state of Paraná. Methods: longitudinal and retrospective study, conducted between January 2010 and December 2013, with 737 patients of both sexes submitted to RYGB or SG and evaluated in the preoperative, 1 and 5 years after bariatric surgery (BS). Age, height, body weight, Body Mass Index (BMI), biochemical and pressure parameters were recorded. Results: of the total of patients, men represented lower frequency, were slightly older, with higher body weight, BMI and worse metabolic and pressure conditions than women in pre-BS (p<0.05). Regardless of sex, RYGB and SG were effective in promoting body weight reduction and BMI in 1 and 5 years after BS; the RYGB technique had greater impact on these variables in both sexes (p<0.05). The highest percentage of lost weight was observed in women who underwent the RYGB technique in the first year after BS. Five years after BS, the RYGB technique promoted a higher rate of body weight reduction in men and women compared to the SG technique (p<0.05). Conclusion: regardless of sex, the RYGB technique promotes a higher degree of body weight reduction and BMI over time compared to the SG; having its biggest impacts in the 1 year after BS, especially in women.

Two-year results of laparoscopic sleeve gastrectomy and Roux-En-Y Gastric Bypass in patients with morbid obesity

“…Gamba и соавт. также демонстрируют более высокие темпы снижения веса после РуГШ по сравнению с ЛПРЖ через 5 лет после оперативного вмешательства [12]. Метаанализ Hayoz и соавт., опубликованный в 2018 году, также подтверждает более высокую эффективность РуГШ по сравнению с ЛПРЖ в контексте стойкого снижения веса и меньшей частоты повторного набора массы тела в сроки наблюдения от 6 до 52 месяцев [13].…”

Effizienz und Anwendbarkeit der Sleeve Gastrektomie bei jüngeren Patienten im Vergleich zu älteren. Multizentrische Propensity-Score-Matching-Analyse.

“…Bei älteren Patientengruppen erzielte die SG ähnliche Ergebnisse. In eigenen Veröffentlichungen und auf der Grundlage einer Literaturrecherche hat die SG bei älteren Patienten eine ausreichende langfristige BMI-Reduktion erzielt, wobei die durchschnittliche BMI-Reduktion von den demografischen Merkmalen der Patienten und der Nachbeobachtungszeit nach der Operation beeinflusst wird [17][18][19][20].…”

Roux-en-y gastric bypass reduces body parameters but does not alter diet quality during six months follow-up

“…Bariatric surgery (BS) is a procedure indicated for the treatment of severe obesity, when patients do not respond to conventional treatment, which involves changes in lifestyle and drug therapy 1 . By reducing gastric and absorptive capacity, presenting a low risk of complications and being effective in reducing excess weight, Roux-en-Y Gastric Bypass (RYGB) is a technique considered the gold standard 2 , corresponding to the main BS performed in Brazil 3 . The weight loss induced by BS can be divided into phases, in which the first six months after surgery, the short-term, is characterized by a marked weight loss 4 .…”