title: Multivariate analysis for predicting the presence of bacteria in bile in patients with acute cholecystitis.
abstract: OBJECTIVE
  to find out whether the presence of bacteria in bile could be predicted accurately from preoperative data in patients with acute cholecystitis.
  
  
  METHODS
  Prospective open study.
  
  
  METHODS
  University hospital.
  
  
  METHODS
  42 patients undergoing cholecystectomy for acute gallstone cholecystitis.
  
  
  METHODS
  Correlations between 24 preoperative clinical and laboratory variables, and the incidence of pathogenic organism in bile.
  
  
  RESULTS
  4 of the 24 variables tested were of predictive significance. These were external body temperature on admission, percentage of neutrophils, preoperative white blood cell count, and total serum concentration of bilirubin. When these predictive variables were evaluated in the discriminant analysis equation they had a sensitivity of 92% and a specificity of 100% in predicting positive bile culture.
  
  
  CONCLUSIONS
  Multivariate discriminant analysis permits accurate preoperative prediction of bile cultures growing pathogens in patient undergoing cholecystectomy for acute cholecystitis.
authors.affiliation: Department of Surgery, University of Rome, Tor Vergata, Italy.
authors.forename: A M
authors.initials: AM
authors.lastname: Farinon
authors.forename: M
authors.initials: M
authors.lastname: Grande
authors.forename: A
authors.initials: A
authors.lastname: Torquati
authors.forename: P
authors.initials: P
authors.lastname: D'Antini
mesh_terms: D000208:Acute Disease; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000704:Analysis of Variance; D001424:Bacterial Infections / Q000175:diagnosis* / Q000188:drug therapy; D001646:Bile / Q000382:microbiology*; D016009:Chi-Square Distribution; D002764:Cholecystitis / Q000382:microbiology* / Q000628:therapy; D016002:Discriminant Analysis; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D011446:Prospective Studies; D012307:Risk Factors; D012680:Sensitivity and Specificity