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左室功能的定量分析,对于选择治疗、评价疗效和估测预后具有重要的临床意义。超声心动图技术简便、安全、易于重复、准确性高,因而已成为定量评价左室功能的重要手段。一、左室收缩功能的评价心脏的基本功能是泵出足够的血液以满足机体代谢的需要,因此,心搏量是衡量左室收缩功能的重要指标。利用M型超声技术,可测出舒张和收缩末期左室前后径,由此可算出左室舒张和收缩末期的容量,两者之差即为心搏量。临床应用的经验表明,在诸种基于M型超声测量技术的左室容量计算方法中。Tei-
Quantitative analysis of left ventricular function for the selection of treatment, evaluation of efficacy and prognosis has important clinical significance. Echocardiography technology is simple, safe, easy to repeat, high accuracy, which has become an important means of quantitative evaluation of left ventricular function. First, the assessment of left ventricular systolic function The basic function of the heart is to pump enough blood to meet the body’s metabolic needs, therefore, stroke volume is an important measure of left ventricular systolic function. Using M-mode ultrasound, diastolic and systolic left ventricular anteroposterior diameter can be measured, which can be calculated from the left ventricular diastolic and systolic volume, the difference between the two is the amount of stroke. Clinical experience has shown that in a variety of methods based on M-type ultrasound measurement of LV volume. Tei-