Effect of routine clopidogrel use on bleeding complications after transbronchial biopsy in humans

Chest
Armin ErnstFelix J F Herth

Abstract

Clopidogrel is often prescribed for primary or secondary prevention of cardiovascular disease and has been associated with unwanted bleeding events. After having shown that transbronchial biopsy can safely be performed in pigs receiving clopidogrel, we sought to determine whether routine clopidogrel use increases the risk of bleeding after transbronchial lung biopsy in humans. Prospective cohort study. Data were collected on 604 patients without underlying coagulation problems who underwent transbronchial lung biopsy over 13 months. Clopidogrel was not discontinued before biopsy in patients who were using it. Transbronchial biopsies were performed, and the incidence of bleeding and other complications among patients receiving clopidogrel was compared with that of other patients. The study was stopped early because the bleeding rate in the clopidogrel-only group (n = 18) was excessive (89% [16 of 18 patients] vs 3.4% [20 of 574 control subjects; p > 0.001] and also in the group receiving clopidogrel and aspirin (100% [12 of 12 patients] vs 3.4% among control subjects [p > 0.001]. Bleeding rates were significantly higher in the clopidogrel group for each degree of bleeding severity: mild (27% vs 1.5%), moderate (34% vs 1.5%), and...Continue Reading

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