EARLY SEMICLOSING MOVHVIENT(ESM)OF THE LEAFLET IN CASES WITH DUROMEDICS PROSTHETIC VALVES IN MITRAL POSITION

Abstract

The purpose of this study is to know how valve orientation influences on closing movement. 26 cases were devided into 2 groups, group A: valves were fixed in same direction as normal valve, group B: valves were rotated in a 90 degree. (1)ESM was observed in 82% of group A and 60% of group B. (2)Position of the leaflet which shows ESM was posterior (100%) in group A and left-sided leaflet(78%), right-sided(11%) both leaflet(11%) in group B. (3)The time interval from leaflet opening to early closing was devided by the R-R interval. The value was 0.29±0.06 in group A and 0.41±0.10 in group B(P<0.01).