Lindner K H
Anaesthesist. 1982 Mar;31(3):129-34.
In patients with and without coronary artery disease who were undergoing anaesthesia, the V5 precordial lead was recorded in addition to the limb leads. ST segment depression in the left precordial leads, especially V5, can be an indication of myocardial ischaemia, such as can arise during the stress of anaesthesia or operation. As a measure of myocardial oxygen usage, the rate-pressure product was calculated. No alterations of the ST segment were noted during general or regional anaesthesia in twenty patients free of coronary artery disease. In four out of ten patients with coronary insufficiency however, ST segment depression and pre-terminal T-wave negativity were recorded. This study shows that besides calculation of the rate-pressure product, a V5 lead recording is also a means of continuous monitoring for the occurrence of myocardial ischaemia.
在接受麻醉的有和没有冠状动脉疾病的患者中，除肢体导联外还记录了V5胸前导联。左胸前导联尤其是V5导联的ST段压低可能提示心肌缺血，比如在麻醉或手术应激期间可能出现的心肌缺血。作为心肌氧耗的一个指标，计算了心率-血压乘积。在20例无冠状动脉疾病的患者中，全身麻醉或区域麻醉期间未观察到ST段改变。然而，在10例冠状动脉功能不全的患者中，有4例记录到ST段压低和终末前T波倒置。本研究表明，除了计算心率-血压乘积外，记录V5导联也是持续监测心肌缺血发生情况的一种方法。
