For anterior myocardial infarction,use the avR lead ST the segment the index sign for jack upping over and abovely same as V_1 lead ST segment jack upping,it can distinguish occlusion of LM or LAD.

• 对于前壁AM I患者,用avR导联ST段抬高大于等于V1导联ST段抬高的指标,可以鉴别是LM还是LAD的闭塞。