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对于心肌病患者,等容舒张时间(IVT)为运动能力的决定因素。作者推测,心脏再同步治疗(CRT)后运动能力的改善与IVT减少和充盈时间增加所致的更有效
For patients with cardiomyopathy, isovolumic relaxation time (IVT) is a determinant of exercise capacity. The authors hypothesize that improvement in motor performance after cardiac resynchronization therapy (CRT) is more effective due to reduced IVT and increased filling time