Terumasa Koyama

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BACKGROUND Although several echo-Doppler methods were proposed to optimize atrioventricular (AV) delay in patients with sequential ventricular pacing, "echo-guided" AV optimization has not been widely adopted clinically. A combination of trasmitral flow (TMF) and pulmonary venous flow (PVF) measurements may be beneficial to further optimize AV delay to(More)
BACKGROUND Recently, the energy loss index (ELI) has been proposed as a new functional index to assess the severity of aortic stenosis (AS). The aim of this study was to investigate the impact of the ELI on left ventricular mass (LVM) regression in patients after aortic valve replacement (AVR) with mechanical valves. METHODS A total of 30 patients with(More)
OBJECTIVE Our objective was to evaluate the degree of change in left ventricular mass index (LVMI) regression after aortic valve replacement (AVR) using three different valves. METHODS Group 1 (n=17) included patients with bioprosthesis (Medtronic Hancock 2), Group 2 (n=21) included patients with mono-leaflet mechanical valve (Medtronic Hall), and Group 3(More)
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