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近年来无创伤性心机能测定法有不少发展,一般认为测定心脏收缩时间间距(简称STI)是一种间接估计左心室收缩机能的一个较灵敏的指标。国内外在基础与临床方面已有这方面的报道。国内报道在测定STI时,一般常用
In recent years there have been many developments in noninvasive cardiometry, and it is generally believed that measuring the time of systole (referred to as STI) is a more sensitive index for indirectly estimating left ventricular systolic function. At home and abroad in the basic and clinical aspects of this have been reported. Domestic reports in the determination of STI, commonly used