title: Univariate risk factors for prolonged mechanical ventilation in patients undergoing prosthetic heart valves replacement surgery.
abstract: Data from 736 patients undergoing prosthetic heart valve replacement surgery and concomitant surgery (combined surgery) from January 1998 to January 2004 at Union Hospital were retrospectively reviewed. Univariate logistic regression analyses were conducted to identify risk factors For prolonged mechanical ventilation. The results showed that prolonged cardiopulmonary bypass duration, prolonged aortic cross clamp time and low ejection fraction less than 50 percent (50%) were found to be independent predictors for prolonged mechanical ventilation. Meanwhile age, weight, and preoperative hospital stay (days) were not found to be associated with prolonged mechanical ventilation. It was concluded that, for age and weight, this might be due to the lower number of old age patients (70 years and above) included in our study and genetic body structure of majority Chinese population that favor them to be in normal weight, respectively.
authors.affiliation: Department of Cardiovascular Surgers; Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
authors.forename: Ommari Baaliy
authors.initials: OB
authors.lastname: Mkangara
authors.forename: Kailun
authors.initials: K
authors.lastname: Zhang
authors.forename: Yunhai
authors.initials: Y
authors.lastname: Yang
authors.forename: Saumu Tobbi
authors.initials: ST
authors.lastname: Mweri
authors.forename: Theresia M
authors.initials: TM
authors.lastname: Kobelo
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D005260:Female; D006349:Heart Valve Diseases / Q000601:surgery; D019918:Heart Valve Prosthesis Implantation; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D012121:Respiration, Artificial; D012189:Retrospective Studies; D012307:Risk Factors; D055815:Young Adult