急性心肌梗塞(AMI)后,左心室功能取决于梗塞范围的大小,其预后也必然与此有关。但目前测定梗塞范围的方法和技术、设备等要求很高,尚不能普遍采用。Selvester等于1965年提出用心电图标测法来推算梗塞范围,但需用电子计算机计算,以后Palmeri及Wagner等在此基础上加以简化,用常规心电图的QRS时限与振幅的 Acute myocardial infarction (AMI), left ventricular function depends on the size of the infarct size, the prognosis is bound to be related to this. However, the current method of determination of infarct size and technology, equipment and other demanding, not yet widely used. Selvester equal in 1965 proposed the use of ECG measurements to estimate infarct size, but the need to use computer calculations, Palmeri and Wagner, etc. on the basis of this to be simplified, with conventional ECG QRS duration and amplitude