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a surgical procedure by which all or part of the stomach is circumvented by anastomosis to the small intestine, performed to overcome obstruction or in the treatment of morbid obesity.

gastric bypass n.
A surgical procedure used for treatment of morbid obesity, consisting of the severance of the upper stomach, anastomosis of the small upper pouch of the stomach to the jejunum, and closure of the distal part of the stomach.


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  • Gastric digestion

    gastric digestion n. The part of digestion, chiefly of proteins, carried on in the stomach by the enzymes of the gastric juices. Also called peptic digestion.

  • Gastric feeding

    gastric feeding n. The administration of food directly into the stomach by a tube inserted either through the nasopharynx and esophagus or directly through the abdominal wall.

  • Gastric fistula

    [gas-trik] /ˈgæs trɪk/ adjective 1. pertaining to the stomach. /ˈɡæstrɪk/ adjective 1. of, relating to, near, or involving the stomach: gastric pains adj. 1650s, with -ic + Greek gaster (genitive gastros) “stomach,” by dissimilation from *graster, literally “eater, devourer,” from gran “to gnaw, eat,” from PIE root *gras- “to devour” (cf. Greek grastis “green fodder,” […]

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