Objective: Explore the value of phonocardiogram exercise test (PCGET) to evaluating cardiac contractility.
目的：探讨心音图运动试验（PCGET）评估心肌收缩力及心力储备的价值。
Phonocardiogram exercise testing (PCGET) is a method through applying a phonocardiograph to evaluate cardiac contractility and the cardiac reserve.
运动试验是评价缺血性心脏病病人的诊断及预后的一种重要的无创性检测手段。
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