[Clinical characteristics of biliary tract infection and acalculous cholecystitis after cardiovascular surgery].

Biliary tract infection (BTI) including acalculous cholecystitis is a rare but life-threatening complication after cardiovascular surgery. The objective of our study was to describe epidemiology, clinical characteristics, and risk factors of BTI after cardiovascular surgery. From January 2007 to December 2011, 586 consecutive patients(age68±11;397 men,189 women)were enrolled in this study. BTI was diagnosed according to Centers for Disease Control and Prevention (CDC) surveillance criteria for healthcare associated infection. Data collection included preoperative, intraoperative, and post-operative variables. The overall incidence of BTI was 3.9%. The mortality in BTI group was significantly higher than that in non-BTI group (17.1% vs 5.5%, p<0.05). Multi-logistic analysis revealed that operation of the thoracic aorta( p<0.05) and massive transfusion(p<0.01) were independent risk factors for BTI after cardiovascular surgery.