title: Changes in gallbladder motility in gastrectomized patients.
abstract: OBJECTIVE
  Gastric resection may predispose gallstone formation. However, the mechanism has not been clearly understood. To evaluate the relationship between gastric resection and gallstone formation, we compared gallbladder(GB) motility in gastrectomized patients and control subjects.
  
  
  METHODS
  We compared the GB volume and ejection fraction of the 46 gastrectomized patients with 37 healthy controls using real time ultrasonography.
  
  
  RESULTS
  GB volume increased significantly in the gastrectomized group in fasting (30.2 +/- 13.9 ml). The GB volume after a fatty meal was greater in the gastrectomized group (12.6 +/- 6.4 ml) than in the control group (4.3 +/- 3.3 ml) (p < 0.01). A significant reduction of ejection fraction was found in gastrectomized patients (56.9 +/- 13.0%) in comparison with the control group (75.5 +/- 16.1%) (p < 0.01). The GB ejection fraction had a poor correlation to the postoperative period (r = 0.232).
  
  
  CONCLUSIONS
  A gastrectomy appears to be a risk factor of GB dysmotility, which may play a major role in gallstone formation in gastrectomized patients.
authors.affiliation: Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea.
authors.forename: J
authors.initials: J
authors.lastname: Hahm
authors.forename: J
authors.initials: J
authors.lastname: Park
authors.forename: Y
authors.initials: Y
authors.lastname: Cho
authors.forename: C
authors.initials: C
authors.lastname: Eun
authors.forename: Y
authors.initials: Y
authors.lastname: Lee
authors.forename: H
authors.initials: H
authors.lastname: Choi
authors.forename: B
authors.initials: B
authors.lastname: Yoon
authors.forename: M
authors.initials: M
authors.lastname: Lee
authors.forename: C
authors.initials: C
authors.lastname: Kee
authors.forename: K
authors.initials: K
authors.lastname: Park
authors.forename: H
authors.initials: H
authors.lastname: Lim
authors.forename: S
authors.initials: S
authors.lastname: Kwon
mesh_terms: D000328:Adult; D000368:Aged; D002769:Cholelithiasis / Q000000981:diagnostic imaging / Q000209:etiology*; D004435:Eating; D019160:Endosonography; D005215:Fasting; D005260:Female; D005704:Gallbladder / Q000000981:diagnostic imaging / Q000503:physiopathology*; D016473:Gallbladder Emptying; D005743:Gastrectomy / Q000009:adverse effects*; D005769:Gastrointestinal Motility; D006801:Humans; D008297:Male; D008875:Middle Aged; D011336:Probability; D011446:Prospective Studies; D012016:Reference Values; D018570:Risk Assessment; D013274:Stomach Neoplasms / Q000601:surgery*