title: Clinical impact of body mass index on bactibilia and bacteremia.
abstract: BACKGROUND
  The aim of this study was to evaluate the association between obesity and infected bile or bacteremia in patients with acute calculous cholecystitis.
  
  
  METHODS
  Authors analyzed the medical records of 139 patients who had undergone cholecystectomy for the treatment of acute calculous cholecystitis from January 2007 to June 2013 in a single teaching hospital. Association of body mass index (BMI) with bactibilia and bacteremia was assessed using univariate and multivariate analysis. Clinical findings and biliary infection related data were recorded for the following variables: gender, age, alcohol and smoking history, the results of blood and bile cultures, cholesterolosis, diabetes, hypertension, and duration of the hospital stay.
  
  
  RESULTS
  The microbial culture rate of bactibilia and bacteremia were 50.4% and 21.6%, respectively. In the univariate analysis, bacteremia was associated with bactibilia (OR: 4.33, p = 0.002). In the multivariate analysis for the risk factors of bactibilia, BMI and bacteremia were related with bactibilia (OR: 0.59, 95% CI: 0.42-0.84, p = 0.003) (OR: 3.32, 95% CI: 1.22-9, p = 0.02). In the multivariate analysis for the risk factors of bacteremia, BMI, bactibilia and age were related with bacteremia (OR: 0.76, 95% CI: 0.59-0.99, p = 0.04) (OR: 3.46, 95% CI: 1.27-9.45, p = 0.02) (OR: 1.05, 95% CI: 1.01-1.09, p = 0.02).
  
  
  CONCLUSIONS
  In this retrospective study, BMI was inversely correlated with bacteremia or bactibilia, which means obese or overweight patients are less likely to be associated with bacteremia or bactibilia in patients with acute calculous cholecystitis.
authors.forename: Chang Seok
authors.initials: CS
authors.lastname: Bang
authors.affiliation: Department of Internal Medicine, Hallym University College of Medicine, Chuncheon, South Korea. jaihoonyoon@gmail.com.
authors.forename: Jai Hoon
authors.initials: JH
authors.lastname: Yoon
authors.forename: Youn Jeong
authors.initials: YJ
authors.lastname: Kim
authors.forename: Jin Bong
authors.initials: JB
authors.lastname: Kim
authors.forename: Gwang Ho
authors.initials: GH
authors.lastname: Baik
authors.forename: Ki Tae
authors.initials: KT
authors.lastname: Suk
authors.forename: Yeon Soo
authors.initials: YS
authors.lastname: Kim
authors.forename: Dong Joon
authors.initials: DJ
authors.lastname: Kim
mesh_terms: D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D016470:Bacteremia / Q000453:epidemiology* / Q000382:microbiology; D001646:Bile / Q000382:microbiology*; D001660:Biliary Tract Diseases / Q000453:epidemiology / Q000382:microbiology; D015992:Body Mass Index; D002763:Cholecystectomy; D041881:Cholecystitis, Acute / Q000453:epidemiology* / Q000382:microbiology / Q000601:surgery; D015331:Cohort Studies; D015897:Comorbidity; D005260:Female; D042882:Gallstones / Q000453:epidemiology* / Q000382:microbiology / Q000601:surgery; D006801:Humans; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D009765:Obesity / Q000453:epidemiology*; D012189:Retrospective Studies; D012307:Risk Factors