Early regional assessment of LV mass regression and function after stentless valve replacement: comparative randomized study.

摘要: Early regional performance and hypertrophy regression after stentless aortic valve replacement are still incompletely characterized. We compared early postoperative changes of segmental thickness function stented as assessed by cardiac magnetic resonance (CMR). In 16 patients randomly assigned to (Mosaic, 8 patients) (Freestyle, groups, 4 parallel short-axis images at the level apex (slice 4), midventricle (slices 2-3), mitral 1) were obtained with a 1.5 T CMR scanner (Magnetom Sonata, Siemens) before 1 month surgery. Cine using an echo gradient sequence. Left ventricle mass was calculated difference between left ventricular end-diastolic volume epicardial endocardial borders multiplied myocardium density factor (1.05). Each slice divided into segments (octants) from anterior (octant I-II) septal V-VIII). A total 32 encompassed entire heart. From each these elements end diastolic systolic (fractional thickening) calculated. valves significant reduction octant on mid-ventricular noted. There no in function-segment thickening. observed. there midventricular level. However, this finding did not coincide function.