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Comparative Study
. 2014;27 Suppl 1(Suppl 1):43-6.
doi: 10.1590/s0102-6720201400s100011.

Comparison of weight loss, food consumption and frequency of vomiting among Roux-en-Y gastric bypass patients with or without constriction ring

[Article in English, Portuguese]
Silvia Leite Faria  1 , Orlando Pereira Faria  1 , Mariane de Almeida Cardeal  1
Affiliations
Comparative Study

Comparison of weight loss, food consumption and frequency of vomiting among Roux-en-Y gastric bypass patients with or without constriction ring

[Article in English, Portuguese]
Silvia Leite Faria et al. Arq Bras Cir Dig. 2014.

Abstract
in English, Portuguese

Background: After Roux-en-Y gastric bypass to avoid rapid gastric emptying, dumping syndrome and regained weight due to possible dilation of the gastric pouch, was proposed to place a ring around the gastric pouch.

Aim: To compare weight loss, consumption of macronutrients and the frequency of vomiting among patients who underwent Roux-en-Y gastric bypass with and without the placement of a constriction ring around the pouch.

Method: A retrospective study, in which an analysis of medical records was carried out, collecting data of two groups of patients: those who underwent the operation with the placement of a constriction ring (Ring Group) and those who underwent without the placement of a ring (No-Ring Group). The food intake data were analyzed using three 24-hour recalls collected randomly in postoperative nutritional accompaniment. Data on the percentage of excess weight loss and the occurrence of vomiting were collected using the weight corresponding to the most recent report at the time of data collection.

Results: Medical records of 60 patients were analyzed: 30 from the Ring Group (women: 80%) and 30 from the No-Ring Group (women: 87%). The average time since the Ring Group underwent the operation was 88 ± 17.50 months, and for the No-Ring Group 51 ± 15.3 months. The percentage of excess weight loss did not differ between the groups. The consumption of protein (g), protein/kg of weight, %protein and fiber (g) were higher in the No-Ring Group. The consumption of lipids (g) was statistically higher in the Ring Group. The percentage of patients who never reported any occurrence was statistically higher in the No-Ring Group (80%vs.46%). The percentage who frequently reported the occurrence was statistically higher in the Ring Group (25%vs.0%).

Conclusion: The placement of a ring seems to have no advantages in weight loss, favoring a lower intake of protein and fiber and a higher incidence of vomiting, factors that have definite influence in the health of the bariatric patient.

Racional: Após bypass gástrico em Y-de-Roux e a fim de evitar o rápido esvaziamento gástrico, amenizar a síndrome de dumping e evitar o reganho de peso devido à possível dilatação da anastomose gastrojejunal, foi idealizada a colocação de um anel ao redor do reservatório gástrico.

Objetivo: Comparar a perda de peso, o consumo de macronutrientes e a frequência de vômitos entre pacientes que realizaram o bypass gástrico em Y-de-Roux com e sem a colocação do anel de contenção.

Métodos: Estudo retrospectivo na análise de prontuários para a coleta dos dados de dois grupos de pacientes: os que realizaram o bypass gástrico em Y-de-Roux com a colocação do anel de contenção ao redor da bolsa gástrica (grupo com anel) e sem a colocação do anel (grupo sem anel). Os dados de consumo alimentar foram analisados através de três recordatórios de 24 horas coletados aleatoriamente nos atendimentos nutricionais do pós-operatório. Os dados quanto à porcentagem de perda do excesso de peso e ocorrência de vômitos foram coletados utilizando o peso e o relato mais recente em relação ao período da coleta.

Resultados: Analisaram-se prontuários de 60 pacientes: 30 do grupo com anel e 30 do grupo sem anel. A média do tempo de operado do grupo com anel foi de 88±17,5 meses, e do grupo sem anel 51±15,3 meses. A porcentagem de perda do excesso de peso não diferiu entre os grupos. O consumo de proteína (g), proteína/kg de peso, %proteína e fibras (g) foi estatisticamente superior no grupo sem anel. O consumo de lipídios (g) foi estatisticamente superior no grupo com anel. A porcentagem de pacientes que nunca relataram a ocorrência foi estatisticamente superior no grupo sem anel (80%vs46%). A porcentagem que frequentemente relataram a ocorrência foi superior no grupo com anel (25%vs0%) (p< 0.01).

Conclusão: A colocação do anel de contenção parece não apresentar vantagens na perda de peso, podendo favorecer menor consumo de proteínas e fibras e maior ocorrência de vômitos, fatores de total influência para a saúde do paciente bariátrico.

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Conflict of interest statement

Conflicts of interest: none

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