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心缩间期(STI)的测定是一种安全、方便、重复性好的非创伤性心功能评定方法,是判定左室功能及诊断心脏疾病的辅助手段。到目前为止,对STl的测定指标认为较有价值的有七个。而其中最敏感者为排血前时期与左心室排血时间的比值(PEP/
The measurement of systolic interval (STI) is a safe, convenient and reproducible method of assessing noninvasive cardiac function and is an adjunct to determine left ventricular function and diagnose heart disease. To date, there are seven more valuable indicators for the determination of STl. The most sensitive of them was the ratio of pre-discharge period to left ventricular ejection fraction (PEP /