High-Risk Committee for Cardiac Surgery Decision-Making: Results From 110 Consecutive Patients

Abstract

This study evaluated our institutional experience in forming a surgeon-based committee to discuss and provide consensus opinion on high-risk cardiac surgical cases. The committee consisted of 4 surgeons with at least 1 senior surgeon at any given time with a rotating schedule. Patients with a Society of Thoracic Surgeons predicted risk of mortality above specified thresholds were mandated for referral to the committee in addition to patients referred at the discretion of the surgeon. Kaplan-Meier analysis was used to model survival. A total of 110 consecutive patients were reviewed by the committee. The most common procedure types for referral were isolated coronary artery bypass grafting (47.3%; n= 52) and coronary artery bypass grafting with concomitant aortic valve replacement (19.1%; n= 21). The overall median Society of Thoracic Surgeons predicted risk of mortality for referred patients was 5.35% (interquartile range, 4.07%-7.89%). After group discussion, a total of 62 patients were recommended to proceed with surgery (56.4%). Reasons for declining surgery included consensus that an intervention was not indicated (39.6%; n= 19), that an alternative, nonsurgical procedure was recommended (29.2%; n= 14), that there was continued medical management and reevaluation (18.8%; n= 9), and that the patient was deemed at too high a risk for surgery (12.5%; n= 6). Operative mortality in patients proceeding with surgery was 4.6% (n= 2), with an observed-to-expected mortality of 0.86. The 6-month survival after surgery was 92.2%. Implementation of a surgeon-based committee to discuss high-risk cases provided a unified voice to referring physicians and facilitated consensus decision-making with acceptable clinical outcomes in a challenging patient cohort.