1984 Volume 13 Issue 6 Pages 1468-1479
The prosthetic valve function by cardiac pacing method was carried out in 41 patients after aortic (16 patients), mitral (14 patients), aortic combined with OMC (7 patients), and aortic combined with mitral valve replacement (4 patients) at long term stage. The results were as follows. (1) The rate-output curves were observed sloped type in AVR group, peaked type in MVR and AVR combined with MVR groups, and flat type in AVR combined with OMC group. (2) In AVR groups, No. 25-29 valves were better valve function than No. 23 and 21 valves. (3) In MVR groups, the xenograft valves were better than the mechanical valves especially at the view point of the response to tachycardia. And in the xenograft valves, No. 29-33 Ionescu-Shiley valves showed the best prosthetic valve function.
