title: Thrombocytopenia and bleeding in veterans with non-hepatitis C-related chronic liver disease.
abstract: BACKGROUND
  Thrombocytopenia in chronic liver disease (CLD) typically reflects disease severity and may indicate an increased risk for bleeding.
  
  
  OBJECTIVE
  To describe the longitudinal course of thrombocytopenia and risks for bleeding in veteran patients with non-hepatitis C-related CLD.
  
  
  METHODS
  We identified 2,349 patients with non-hepatitis C-related CLD from databases of the New England Veterans Healthcare System between 1999 and 2008. The cohort was stratified by baseline platelet counts of <50,000, 50-100,000, > 100,000-150,000, and >150,000/μl. Primary outcomes were the incidence and hazard rates for bleeding episodes requiring hospitalization and incident severe thrombocytopenia (<50,000/μl).
  
  
  RESULTS
  Over a median follow-up of 3.3 years (IQR 1.2, 6.3), incident major bleeds, predominantly gastrointestinal, occurred in 254 patients (10.8 % of the cohort) and in 19.9 % of those with baseline platelets <50,000/μl. Incident severe thrombocytopenia occurred in 315 patients (13.4 % of cohort) and in 40.7 % of those with baseline platelet counts between 50,000 and 100,000/μl. Baseline platelet counts between 50,000 and 100,000/μl independently predicted bleeding [adjusted HR 2.89 (1.76, 4.73) p < 0.001] as did esophageal varices, hemoglobin ≤ 9.9 g %, and INR 1.4-2.0. Incident severe thrombocytopenia and minimum platelet counts <25,000/μl each associated with bleeding episodes, but the average of minimum platelet counts recorded for those who bled was 76,000/μl.
  
  
  CONCLUSIONS
  Among veteran patients with non-hepatitis C-related CLD, baseline platelet counts of 50,000 to 100,000/μl increased subsequent risks for both incident severe thrombocytopenia and major bleeding events. Whereas associations between severe thrombocytopenia and bleeding most likely reflect CLD severity, liver-related coagulopathies, and co-morbid bleeding risks, interventions to enhance platelet production may be beneficial for such patients.
authors.affiliation: VA Cooperative Studies Program, Massachusetts Veterans Epidemiologic Research and Information Center (MAVERIC), VA Boston Healthcare System (151MAV), 150 S. Huntington Ave, Boston, MA 02130, USA. john.hermos@va.gov
authors.forename: John A
authors.initials: JA
authors.lastname: Hermos
authors.forename: Arman
authors.initials: A
authors.lastname: Altincatal
authors.forename: H Christian
authors.initials: HC
authors.lastname: Weber
authors.forename: Kelly
authors.initials: K
authors.lastname: Grotzinger
authors.forename: Kyle J
authors.initials: KJ
authors.lastname: Smoot
authors.forename: Kelly
authors.initials: K
authors.lastname: Cho
authors.forename: David R
authors.initials: DR
authors.lastname: Gagnon
authors.forename: Elizabeth V
authors.initials: EV
authors.lastname: Lawler
mesh_terms: D000368:Aged; D002908:Chronic Disease; D016208:Databases, Factual / Q000706:statistics & numerical data; D005260:Female; D005500:Follow-Up Studies; D006471:Gastrointestinal Hemorrhage / Q000401:mortality*; D006526:Hepatitis C; D006801:Humans; D015994:Incidence; D008107:Liver Diseases / Q000401:mortality*; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D010976:Platelet Count; D016016:Proportional Hazards Models; D012189:Retrospective Studies; D012307:Risk Factors; D012720:Severity of Illness Index; D013921:Thrombocytopenia / Q000401:mortality*; D014728:Veterans / Q000706:statistics & numerical data*