Preexisting morbidity as an independent risk factor for perioperative acute thromboembolism syndrome.

HYPOTHESIS Preexisting morbidities are risk factors for perioperative arterial or venous thromboembolic events and subsequent death within 30 postoperative days. DESIGN Prospective cohort study. SETTING University-affiliated general hospital. PATIENTS A total of 21,903 surgery patients treated from January 1, 1991, through December 31, 2002. MAIN… (More)