title: Are routine preoperative liver function tests in patients with uncomplicated symptomatic gallstone disease necessary?
abstract: BACKGROUND
  The aim of this study was to evaluate the value of preoperative liver function tests (LFTs) in patients with uncomplicated gallstone disease and scheduled for laparoscopic cholecystectomy.
  
  
  METHODS
  All 1112 patients who underwent a laparoscopic cholecystectomy for symptomatic gallstone disease during a 6-year cohort were retrospectively reviewed. Only patients who presented with uncomplicated disease were selected. Preoperative LFTs, pre-, and postoperative endoscopic retrograde cholangio pancreaticographies (ERCPs) and postoperative complications were collected.
  
  
  RESULTS
  A total of 697 patients were included. There were 629 (90.2%) patients with (group I) and 68 (9.8%) patients without (group II) preoperative LFTs. The incidence of ERCPs, ERCPs positive for bile duct stones, and postoperative complications were not significantly different between groups. Second, Group I patients were divided into four groups: 360 patients with normal LFTs (I-A1), 269 patients with at least one LFT > normal value (I-A2), 531 patients with all LFTs <2× normal (I-B1), and 98 patients with at least one LFT >2× normal (I-B2). More ERCPs were performed in group I-A2 (10%) than in group I-A1 (2.2%) and more in group I-B2 (18.4%) than I-B1 (3.2%), as a consequence of significantly more ERCPs performed preoperatively. No differences were detected between groups regarding ERCPs positive for bile duct stones or postoperative complications.
  
  
  CONCLUSIONS
  Preoperative LFTs do not influence the occurrence of postoperative complications nor the total rate of ERCPs in patients undergoing cholecystectomy for uncomplicated gallstone disease. Preoperative determination of LFTs seems to cause a slight shift from post- to preoperative ERCPs without further clinical consequences.
authors.affiliation: a Department of Surgery , OLVG West , Amsterdam , The Netherlands.
authors.forename: Marijke
authors.initials: M
authors.lastname: van den Berg
authors.affiliation: b Department of Plastic Surgery , ZGT , Hengelo , The Netherlands.
authors.forename: Gijs M
authors.initials: GM
authors.lastname: van Couwelaar
authors.affiliation: a Department of Surgery , OLVG West , Amsterdam , The Netherlands.
authors.forename: Christel A L
authors.initials: CAL
authors.lastname: de Raaff
authors.affiliation: a Department of Surgery , OLVG West , Amsterdam , The Netherlands.
authors.forename: Sjoerd M
authors.initials: SM
authors.lastname: Lagarde
authors.affiliation: a Department of Surgery , OLVG West , Amsterdam , The Netherlands.
authors.forename: Pieter
authors.initials: P
authors.lastname: Joosse
authors.affiliation: a Department of Surgery , OLVG West , Amsterdam , The Netherlands.
authors.forename: Bart A
authors.initials: BA
authors.lastname: van Wagensveld
authors.affiliation: a Department of Surgery , OLVG West , Amsterdam , The Netherlands.
authors.forename: Bart C
authors.initials: BC
authors.lastname: Vrouenraets
mesh_terms: D002760:Cholangiopancreatography, Endoscopic Retrograde; D017081:Cholecystectomy, Laparoscopic; D003955:Diagnostic Tests, Routine; D016099:Endoscopy, Gastrointestinal; D042882:Gallstones / Q000601:surgery*; D006801:Humans; D008111:Liver Function Tests; D011183:Postoperative Complications; D011300:Preoperative Care; D012189:Retrospective Studies
keywords: Common bile duct stones; ERCP; endoscopic retrograde cholangiopancreatography; laparoscopic cholecystectomy; liver function test