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Reoperations on the aortic valve combined with replacement of the ascending aorta
1Division of Cardiovascular Surgery of Toronto General Hospital, University Health Network and the University of Toronto, Ontario, Canada. tirone.david@uhn.on.ca
Objective:
To review the experience with reoperations on the aortic valve combined with replacement of the ascending aorta.
Patients And Methods:
From 1991 to 2000, 237 patients underwent reoperations on the aortic valve combined with replacement of the ascending aorta. The study consisted of 188 men and 49 women, with a mean age of 51 years. The operation was urgent or emergent in 44% of cases. Many patients (42%) were in New York Heart Association Class IV, and 24 had active infective endocarditis. The ascending aorta was replaced previously in 46 patients, while the remaining patients had aneurismal dilation. An aortic valve sparing operation was performed in 14 patients and aortic valve replacement in 223. The ascending aorta was replaced in all patients as follows: as a composite graft in 166 and supracoronary in 71. Mechanical valves were used in 145 (61%) patients.
Results:
The operative mortality was 9%. Postoperative complications were common and 30% of patients suffered an adverse event (death or complication). No independent predictor of operative mortality could be identified but urgent/emergent surgery, advanced functional class, infective endocarditis, coronary artery disease, and replacement of the transverse aortic arch were associated with higher operative mortality by chi-square analysis. The survival at 5 years was 74%+/-4% for patients who had composite replacement of the aortic valve and ascending aorta.
Conclusions:
Reoperations on the aortic valve combined with replacement of the ascending aorta can be performed with acceptable operative risk and good mid-term survival.