心电峰值标测图诊断“无Q性心肌梗塞”53例报告

APPLICATION OF ELECTROCARDIOHRAPHIC PEAK MAPPING IN DIGNOSIS IF NON-Q WAVE MYOCARDIAL INFARCTION

本文报告53例临床诊断为心肌梗塞而常规心电图上无Q波者,经心电峰值标测图(EPM)检查发现其中49例(92.5％)均有明确的异常Q图;另4例有R凹现象。结果表明,EPM可提高“无Q性心梗”的检出率。

Fifty-five patients dignosed as non-Q wave intarction on conventional electrocardiogram were selected in this study. By using electrocardiographic peak mapping (EPM), abnormal Q wave pattern was seen in 49 patients(92.5％). The finding demonstrates that EPM permits the detection of pathological Q wave that otherwise might be absent on conventional ECGs. The remaining 4 patients had no abnormal Q wave pattern on EPM. However, they all showed R potential sink, indicating reduced depolarization of local myocardium. The study shows that EPM may be useful in the dignosis of non-Q wave myocardial infarction.