Abstract
The long-term results of using Hancock porcine bioprostheses in 209 patients were evaluated. Forty patients underwent aortic valve replacement (AVR), 116 mitral valve replacement (MVR), 43 combined valve replacemet (CVR), and 10 valve replacement on the right side of the heart (RVR). The mean duration of the follow-up was 10.5 years (maximum, 20.5 years), and the cumulative follow-up totaled 2147.0 patient-years (PY). The linearized rate of thromboembolism was 0.5%/PY for AVR, 1.7%/PY for MVR, 1.8%/PY for CVR, and 0%/PY for RVR. Freedom from valve-related mortality at 19 years was 81% for AVR, 85% for MVR, 48% for CVR, and 100% for RVR. Freedom from structural valvular deterioration at 20 years was 0% for AVR, 3% for MVR, and 50% for RVR. We conclude that the durability of the Hancock porcine bioprosthesis at 20 years' follow-up is better on the right side of the heart than the left side.
