Brengelmann G L, Johnson J M, Hong P A
J Appl Physiol Respir Environ Exerc Physiol. 1979 Sep;47(3):638-42. doi: 10.1152/jappl.1979.47.3.638.
Esophageal temperature (Tes) varies with depth of insertion. Characteristic features of the esophageal electrocardiogram (ECG) can be used to place probes in the region where the esophagus is between the aorta and the left atrium. This describes a suitable catheter for recording of Tes and ECG and how features of the electrical activity of the atria may be used to place the probe tip. Records of Tes versus depth obtained during heating of four human subjects are included. The technique eliminates the need for radiographic verification of probe position. It could readily be employed in clinical situations with the advantage of having both a central temperature and an electrocardiogram available from a simple, readily inserted, and readily tolerated catheter.
食管温度（Tes）随插入深度而变化。食管心电图（ECG）的特征可用于将探头放置在食管位于主动脉和左心房之间的区域。本文描述了一种适用于记录Tes和ECG的导管，以及如何利用心房电活动的特征来放置探头尖端。文中还纳入了四名人类受试者在加热过程中获得的Tes与深度的记录。该技术无需通过放射成像来验证探头位置。它可轻松应用于临床情况，优点是通过一根简单、易于插入且耐受性良好的导管即可同时获取中心温度和心电图。
