Gastric residue is not more copious in obese patients
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Updated: Oct 3, 2026

Roux-en-Y Gastric Bypass Operation in Rats
Published on: June 11, 2012
1Département d'Anesthésie et de Réanimation, Centre Hospitalier Universitaire Bichat-Claude Bernard, 46 Rue Henri Huchard, 75018 Paris, France. pjuvin@free.fr
Implications:
Previous studies have shown that obese patients have a larger volume of gastric content than lean patients do. However, methodological limitations call into question the validity of these findings. We have reexamined this issue and found identical gastric content volumes in fasting obese and lean subjects after an 8-h fast.
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