title: Obesity is an independent risk factor for clinical decompensation in patients with cirrhosis.
abstract: Obesity is associated with an aggressive course in chronic viral hepatitis; however, its impact in the development of clinical decompensation (CD) in patients with established cirrhosis is uncertain. We evaluated the role of obesity, in relationship to other recognized predictors, in the development of CD in patients with compensated cirrhosis. The study population, a subset of patients included in a randomized trial of beta-blockers in the prevention of varices in whom data on body mass index (BMI) was available, consisted of 161 patients with compensated cirrhosis. Laboratory tests and portal pressure (assessed by the hepatic venous pressure gradient or HVPG) were assessed on inclusion. Patients were followed until CD (ascites, hepatic encephalopathy, or variceal hemorrhage), or until September 2002. Altogether, 29% had a normal BMI, 40% were overweight, and 30% were obese. In a median follow-up of 59 months, CD occurred in 48/161 (30%) patients with an increasingly higher rate according to BMI group (15% in those with normal BMI; 31% in overweight; 43% in obese patients, P=0.011). The actuarial probability of developing CD was significantly higher in the abnormal BMI groups (P=0.022). In a multivariate model that included parameters previously identified as being predictive of CD (HVPG, albumin, Mayo endstage liver disease score), etiology, and treatment group, BMI (hazard ration 1.06; 95% confidence interval 1.01-1.12), P=0.02] was an independent predictor of decompensation, together with HVPG and albumin.
  
  
  CONCLUSIONS
  Obesity has a deleterious effect on the natural history of compensated cirrhosis of all etiologies, independent of portal pressure and liver function. Weight reduction may be a valuable therapeutic measure in this patient population.
authors.affiliation: Liver Unit, Hospital Clinic, Barcelona, Spain; CIBERehd, Barcelona, Spain.
authors.forename: Annalisa
authors.initials: A
authors.lastname: Berzigotti
authors.forename: Guadalupe
authors.initials: G
authors.lastname: Garcia-Tsao
authors.forename: Jaime
authors.initials: J
authors.lastname: Bosch
authors.forename: Norman D
authors.initials: ND
authors.lastname: Grace
authors.forename: Andrew K
authors.initials: AK
authors.lastname: Burroughs
authors.forename: Rosa
authors.initials: R
authors.lastname: Morillas
authors.forename: Angels
authors.initials: A
authors.lastname: Escorsell
authors.forename: Juan Carlos
authors.initials: JC
authors.lastname: Garcia-Pagan
authors.forename: David
authors.initials: D
authors.lastname: Patch
authors.forename: Daniel S
authors.initials: DS
authors.lastname: Matloff
authors.forename: Roberto J
authors.initials: RJ
authors.lastname: Groszmann
mesh_terms: D015992:Body Mass Index; D018450:Disease Progression; D005260:Female; D006801:Humans; D008103:Liver Cirrhosis / Q000150:complications*; D008297:Male; D008875:Middle Aged; D009765:Obesity / Q000150:complications*; D012307:Risk Factors