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目的探讨心电图V1导联T波形态判断急性心肌缺血的作用及其临床价值。方法记录患者心电图V1导联T波形态,分为急性心肌缺血组和非急性心肌缺血组,根据两组间V1导联T波直立个数行χ2检验及灵敏度、特异度、阳性预测值、阴性预测值计算。结果经χ2检验,V1导联T波直立个数两组间比较有统计学意义;经计算,其灵敏度为58%,特异度为69%,阳性预测值为63%,阴性预测值为64%。结论 V1导联T波直立时,则可能是急性心肌缺血或损伤,具有一定的临床价值。
Objective To investigate the role of T wave in ECG V1 lead in determining acute myocardial ischemia and its clinical value. Methods T-wave morphology of V1 lead was recorded and divided into acute myocardial ischemia group and non-acute myocardial ischemia group. According to the χ2 test and the sensitivity, specificity and positive predictive value , Negative predictive value calculation. Results The χ2 test showed that there was significant difference between the two groups in the number of T waves in V1 lead. The calculated sensitivity and specificity were 58%, 69%, 63% and 64%, respectively . Conclusion V1 lead T wave upright, it may be acute myocardial ischemia or injury, has some clinical value.