Abstract
Background: The Trifecta valve (St Jude Medical) is a novel supra-annular aortic bioprosthesis designed to improve hemodynamic performance. We hypothesized that the Trifecta may offer better hemodynamic performance in Japanese patients, in whom the annulus is smaller, compared with Western populations. We compared the early results of hemodynamic performance between the Trifecta and the Magna (Edwards Lifescience) valves at our institution. Methods and Results: The Trifecta was implanted in 33 patients and the Magna was implanted in 41 patients who had aortic valve disease. Postoperative echocardiography was performed just before discharge, and the mean pressure gradient (MPG), effective orifice area (EOA) index and energy loss coefficient (ELCo) index were compared between the 2 groups. The average prosthesis size was similar between the 2 groups (21.1 vs. 21.3mm). The Trifecta group had a significantly lower MPG (P=0.001) and larger EOA index and ELCo index than the Magna group (P<0.001 for both). On multivariate linear regression analysis, use of the Trifecta was the strongest independent determinant of postoperative MPG, EOA and ELCo index. Conclusions: The Trifecta valve provides excellent early postoperative hemodynamic performance in Japanese patients. Patients with a small annulus size relative to body size may benefit more from the Trifecta in terms of postoperative hemodynamic performance. (Circ J 2014; 78: 1372–1378)
