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The effects of Roux-en-Y limb length on gastric emptying and enterogastric reflux in rats
Dutra, Robson Azevedo; Araújo, Wemberton Martins; Andrade, José Ivan de.
  • Dutra, Robson Azevedo; University of São Paulo at Ribeirão Preto School of Medicine. Department of Surgery and Anatomy. São Paulo. BR
  • Araújo, Wemberton Martins; University of São Paulo at Ribeirão Preto School of Medicine. Department of Internal Medicine. São Paulo. BR
  • Andrade, José Ivan de; University of São Paulo at Ribeirão Preto School of Medicine. Department of Surgery and Anatomy. São Paulo. BR
Acta cir. bras ; 23(2): 179-183, Mar.-Apr. 2008. ilus
Article in English | LILACS | ID: lil-478755
ABSTRACT

PURPOSE:

To assess the effects of Roux-en-Y jejunal limb length on gastric emptying and enterogastric reflux.

METHODS:

Seventy male Wistar rats were submitted to antrectomy with Roux-en-Y reconstruction and then were divided into two groups of 35 animals. Group A, short limb (7.5 cm) and Group B, standard limb (15 cm). Group A and B were subdivided into five subgroups each in order to study enterogastric reflux at 30 and 60 minutes and to evaluate gastric emptying at 5, 10 and 15 minutes. In order to measure gastric emptying and enterogastric reflux, radiotracers 99m Tc-Phytate and 99m Tc-DISIDA were respectively used.

RESULTS:

For gastric emptying, the radiotracer concentration was lower in Group A than in Group B after five minutes. The enterogastric reflux was present, but there were no significant differences between enterogastric reflux indexes concerning both A and B Groups.

CONCLUSION:

A standard Roux limb, besides being unable to protect the stomach from the enterogastric reflux, may become a functional barrier for gastric emptying.
RESUMO

OBJETIVO:

Determinar os efeitos do comprimento da alça jejunal em Y de Roux sobre o esvaziamento gástrico e o refluxo enterogástrico.

MÉTODOS:

Setenta e cinco ratos machos foram submetidos à antrectomia com reconstrução em Y de Roux e divididos em dois grupos de 35 animais. Grupo A, alça curta (7,5cm) e Grupo B (15cm), alça de comprimento padrão. Os grupos A e B foram subdivididos em cinco subgrupos cada para o estudo do refluxo enterogástrico aos 30 e 60 minutos e para o estudo do esvaziamento gástrico aos 5, 10 e 15 minutos. 99m Tc-Fitato and 99m Tc-DISIDA foram utilizados para os estudos do esvaziamento gástrico e do refluxo enterogástrico, respectivamente.

RESULTADOS:

No estudo do esvaziamento gástrico, a concentração do radiotraçador foi menor no grupo A do que no Grupo B aos cinco minutos. Foi encontrado o refluxo enterogástrico, nos grupos A e B, sem diferenças entre eles.

CONCLUSÃO:

A alça em Y de Roux de comprimento padrão foi ineficaz em proteger o estômago do refluxo enterogástrico, e pode tornar-se uma barreira funcional ao esvaziamento gástrico.
Subject(s)

Full text: Available Index: LILACS (Americas) Main subject: Anastomosis, Roux-en-Y / Duodenogastric Reflux / Gastric Emptying / Jejunum Limits: Animals Language: English Journal: Acta cir. bras Journal subject: General Surgery / Procedimentos Cir£rgicos Operat¢rios Year: 2008 Type: Article Affiliation country: Brazil Institution/Affiliation country: University of São Paulo at Ribeirão Preto School of Medicine/BR

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Full text: Available Index: LILACS (Americas) Main subject: Anastomosis, Roux-en-Y / Duodenogastric Reflux / Gastric Emptying / Jejunum Limits: Animals Language: English Journal: Acta cir. bras Journal subject: General Surgery / Procedimentos Cir£rgicos Operat¢rios Year: 2008 Type: Article Affiliation country: Brazil Institution/Affiliation country: University of São Paulo at Ribeirão Preto School of Medicine/BR