Value of a bipolar modified inferior lead in detection of inferior myocardial ischaemia.
Value of a bipolar modified inferior lead in detection of inferior myocardial ischaemia.
复制标题
双极改良下导联在检测下壁心肌缺血中的价值。
DOI：
10.1136/hrt.60.4.287
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发表时间：
1988
影响因子：
--
通讯作者：
Verner Rasmussen
中科院分区：
文献类型：
--
作者：
Christian M Jespersen;Verner Rasmussen
只有双极电极导线通常可用于动态监测。双极心前区导联对于检测左冠状动脉功能不全是可靠的，但可能无法检测右冠状动脉功能不全引起的变化。对10例急性心肌梗死（8例下壁和2例前间隔）患者的双极改良下壁导联和CM5导联ST段改变的幅度和极性与标准心电图导联进行比较。8例下壁心肌梗死患者改良正交y导联ST段极性与aVF相同，6例两导联ST段移位大小相同。在2例患者中，改良正交y导联的ST段偏移大于aVF。在2例前间隔心肌梗死患者中，1例改良正交y导联ST段偏移的极性与aVF相同。另一名患者的情况略有不同。CM5电极导线不能可靠地检测下壁心肌缺血。改良正交y导联适用于下壁心肌缺血的检测。
Only bipolar leads are normally available for ambulatory monitoring. Bipolar precordial leads are reliable for detecting left coronary artery insufficiency, but may not detect changes caused by right coronary artery insufficiency. The magnitude and polarity of ST segment changes in a bipolar modified inferior lead and in CM5 were compared with those in standard electrocardiographic leads in 10 consecutive patients with acute myocardial infarction (eight inferior and two anteroseptal). The polarity of the ST segment in the modified orthogonal y lead was the same as that in aVF in all eight patients with inferior myocardial infarction and in six the size of the ST segment shift was identical in the two leads as well. In two patients the ST segment shift was larger in the modified orthogonal y lead than in aVF. In one of the two patients with anteroseptal myocardial infarction the polarity of the ST segment shift was the same in the modified orthogonal y lead and aVF. In the other patient it was slightly different. The CM5 lead did not reliably detect inferior myocardial ischaemia. A modified orthogonal y lead is suitable for the detection of inferior myocardial ischaemia.