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The Annals of Thoracic Surgery, Vol 49, 410-412, Copyright © 1990 by The Society of Thoracic Surgeons

ARTICLES

Hospital death on a cardiac surgical service: negative influence of changing practice patterns

LB McGrath, GW Laub, D Graf and L Gonzalez-Lavin
Department of Surgery, Deborah Heart and Lung Center, Browns Mills, NJ 08015.

From January 1982 through December 1985, 3,772 patients underwent a cardiac surgical procedure for coronary or acquired heart disease. Operative mortality increased from 4% in 1982 to 7% in 1985 (p less than 0.001 by chi 2 analysis). There was an increase over time of patients older than 70 years (p less than 0.001). Female patients increased from 31% in 1982 to 35% in 1985 (p less than 0.001). The percentage of patients having isolated coronary artery bypass grafting decreased from 69% in 1983 to 60% in 1985 (p less than 0.001), and hospital mortality after this procedure increased (p = 0.058). Patients requiring more complex procedures including multiple-valve operations or combined valve replacement or repair plus bypass grafting increased from 1982 through 1985 (p = 0.005). Reoperations for multiple-valve procedures or combined valve repair or replacement plus coronary artery bypass grafting also increased (p = 0.02), particularly for patients more than 70 years of age (p less than 0.001). Changing practice patterns have had a negative impact on surgical results. This evolution in cardiac surgical practice has important implications related to peer review and quality-assurance screening, diagnosis-related group reimbursement, and reporting of surgical outcomes to governmental agencies.

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