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目前用超声心动图测定心排出量是测量左心室腔的短轴内径,它的可靠性取决于左心室腔系椭圆形及其收缩的一致性。缺血性心脏病患者中所常见到的左室收缩不一致,
At present, the echocardiographic measurement of cardiac output is the measurement of the short axis diameter of the left ventricular cavity. Its reliability depends on the consistency of the left ventricular cavity oval and its contraction. Left ventricular contractions that are common in patients with ischemic heart disease are inconsistent,