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. 2023 Feb 6:50:e20233431.
doi: 10.1590/0100-6991e-20233431-en. eCollection 2023.

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

[Article in English, Portuguese]
Fernanda Pereira Gamba  1 , Bruna Schumaker Siqueira  1 , Ricardo Shigueo Tsuchiya  2 , Tomaz Massayuki Tanaka  2 , Sabrina Grassiolli  1
Affiliations

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

[Article in English, Portuguese]
Fernanda Pereira Gamba et al. Rev Col Bras Cir. .

Abstract
in English, Portuguese

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.

Objetivo:: comparar o impacto das técnicas Bypass Gástrico em Y de Roux (BGYR) e Gastrectomia Vertical (GV) na redução do peso corporal ao longo de 1 e 5 anos após a cirurgia bariátrica em pacientes obesos no Estado do Paraná.

Métodos:: estudo longitudinal e retrospectivo, realizado entre janeiro de 2010 a dezembro de 2013, com 737 pacientes de ambos os sexos submetidos a BGYR ou GV e avaliados no pré-cirúrgico, 1 e 5 anos após Cirurgia Bariátrica (CB). Foram registrados idade, estatura, peso corporal, Índice de Massa Corpórea (IMC), parâmetros bioquímicos e pressóricos.

Resultados:: do total de pacientes, homens representavam menor frequência, eram ligeiramente mais velhos, com maior peso corporal, IMC e pior condição metabólica e pressórica que mulheres no pré-CB (p<0,05). Independente do sexo, BGYR e GV foram efetivas em promover redução do peso corporal e IMC em 1 e 5 anos pós-CB; tendo a técnica de BGYR maior impacto nestas variáveis em ambos os sexos (p<0,05). A maior porcentagem de peso perdido foi observada em mulheres submetidas a técnica da BGYR no primeiro ano após a CB. Cinco anos após a CB, a técnica de BGYR promoveu maior taxa de redução de peso corporal em homens e mulheres comparado a técnica da GV (p<0,05).

Conclusão:: independente do sexo a técnica de BGYR promove maior grau de redução do peso corporal e IMC ao longo do tempo em comparação com a GV; tendo seus maiores impactos no 1 ano pós-CB sobretudo em mulheres.

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Conflict of interest statement

Conflict of interest: no.

Figures

Figure 1
Figure 1. Changes in BMI and body weight induced by BS in women and men over time. Data are mean and confidence interval (95% CI).
Figure 2
Figure 2. Comparative effects of changes in BMI and body weight induced by RYGB and SG. Data are means and confidence intervals (95% CI).
Figure 3
Figure 3. Percentage of weight lost at one and 5 years after different types of BS in men and women. Data are mean and confidence interval (95% CI).
See this image and copyright information in PMC

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