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Combined valve and coronary artery bypass surgery: early and late results
W Flameng1, J Szécsi, P Sergeant
1Department of Cardiac Surgery, Katholieke Universiteit Leuven, Belgium.
Insights
Predicting outcomes after combined valve and coronary artery bypass graft (CABG) surgery is crucial. Advanced NYHA class, impaired left ventricular (LV) function, and mitral regurgitation significantly increase risks for patients undergoing CABG.
Area of Science:
- Cardiovascular Surgery
- Cardiac Surgery Outcomes
- Surgical Risk Prediction
Background:
- Combined valve and coronary artery bypass graft (CABG) surgery addresses complex cardiac conditions.
- Identifying predictors of early and late outcomes is essential for patient management.
Purpose of the Study:
- To determine the key factors influencing early, late, and event-free survival in patients undergoing combined valve and CABG surgery.
- To identify significant predictors of hospital mortality and long-term adverse events.
Main Methods:
- Multivariate analysis was employed to assess determinants of survival in 420 patients.
- Preoperative clinical parameters, including NYHA class, left ventricular (LV) function, and mitral regurgitation, were analyzed.
Main Results:
- Hospital death risk increased 5-fold with NYHA class IV, 3-fold with impaired LV function, and doubled with mitral regurgitation.
- Five-year survival for hospital survivors was 91%. Event-free survival at 5 years was 73.0%.
- Late mortality and postoperative events were linked to advanced NYHA class, mitral regurgitation, impaired LV function, and non-sinus rhythm.
Conclusions:
- Preoperative NYHA class, LV function, and mitral regurgitation are critical predictors of clinical outcomes.
- These parameters enable better risk stratification and patient counseling for combined valve and CABG surgery.
Abstract:
Determinants of early, late and event-free survival of combined valve and coronary artery bypass graft (CABG) surgery were studied in 420 patients using multivariate analysis. It was found that the risk of hospital death increases 5 times when the preoperative NYHA class was > or = IV, 3 times when left ventricular (LV) function is significantly impaired and is double when mitral regurgitation is present. The survival probability of hospital survivors was 91% (87.3-94.5%) at 5 years. Late mortality was determined by advanced preoperative NYHA class ( > or = IV) and the presence of mitral regurgitation. The event-free survival probability of hospital survivors, i.e. total events including death, valve-related complications, ischemic complications and recurrent NYHA class > or = IV, was 73.0% (66.7-79.5%) at 5 years. Postoperative events were determined by the presence of preoperative NYHA class > or = IV, impaired ventricular function, mitral regurgitation and non-sinus rhythm. It is concluded that these parameters can be considered as the most important predictors of clinical outcome after combined valve and CABG surgery.