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心功能不全包括收缩功能不全和舒张功能不全。评价心室收缩功能指标主要是射血分数(EF),评价舒张功能的指标主要有舒张早期与舒张晚期二尖瓣血流峰值流速的比值(E/A)等。多数心功能不全患者的收缩和舒张功能障碍同时存在,单一估测心室收缩功能或舒张功能指标的准确性和敏感性较差。综合评价心脏收缩和舒张功能的新指标-T e i指数,即等容收缩时间(ICT)与等容舒张时间(IVRT)的和除以心室射血时间(ET),且其测量方法简便易行,重复性好,不受心律、心室几何形态、心室收缩压、舒张压的影响。本文就其概念及临床应用综述如下。
Cardiac insufficiency includes systolic dysfunction and diastolic dysfunction. Evaluation of ventricular systolic function index mainly ejection fraction (EF), evaluation of diastolic function index mainly diastolic early and diastolic mitral flow peak velocity ratio (E / A) and so on. The majority of patients with cardiac insufficiency and diastolic dysfunction exist at the same time, a single assessment of ventricular systolic function or diastolic function index accuracy and sensitivity is poor. The new index of systolic and diastolic function-the Tei index, which is the sum of isovolumetric systolic time (ICT) and isovolumic relaxation time (IVRT) divided by ventricular ejection time (ET), and its measurement method is simple and easy , Good repeatability, not affected by heart rate, ventricular geometry, systolic pressure and diastolic pressure. This article on its concept and clinical application are summarized below.