亚洲象（印度象）自由放养状态下心电图记录的简易方法建议

PROPOSED SIMPLE METHOD FOR ELECTROCARDIOGRAM RECORDING IN FREE-RANGING ASIAN ELEPHANTS (ELEPHAS MAXIMUS).

作者信息

Chai Norin, Pouchelon Jean Louis, Bouvard Jonathan, Sillero Leonor Camacho, Huynh Minh, Segalini Vincent, Point Lisa, Croce Veronica, Rigaux Goulven, Highwood Jack, Chetboul Valérie

出版信息

J Zoo Wildl Med. 2016 Mar;47(1):6-11. doi: 10.1638/2015-0162.1.

DOI:10.1638/2015-0162.1

PMID:27010258

Abstract

Electrocardiography represents a relevant diagnostic tool for detecting cardiac disease in animals. Elephants can present various congenital and acquired cardiovascular diseases. However, few electrophysiologic studies have been reported in captive elephants, mainly due to challenging technical difficulties in obtaining good-quality electrocardiogram (ECG) tracings, and no data are currently available for free-ranging Asian elephants (Elephas maximus). The purpose of this pilot prospective study was to evaluate the feasibility of using a simple method for recording ECG tracings in wild, apparently healthy, unsedated Asian elephants (n = 7) in the standing position. Successful six-lead recordings (I, II, III, aVR, aVL, and aVF) were obtained, with the aVL lead providing the best-quality tracings in most animals. Variables measured in the aVL lead included heart rate, amplitudes and duration of the P waves, QRS complexes, T and U waves, and duration of the PR, QT, and QU intervals. A negative deflection following positive P waves, representative of an atrial repolarization wave (Ta wave), was observed for five out of the seven elephants.

摘要

心电图是检测动物心脏疾病的一种重要诊断工具。大象可能会出现各种先天性和后天性心血管疾病。然而，关于圈养大象的电生理研究报道较少，主要是因为获取高质量心电图（ECG）记录存在技术难题，目前尚无关于野生亚洲象（印度象）的相关数据。这项前瞻性初步研究的目的是评估在站立姿势下，使用一种简单方法为野生、看似健康且未使用镇静剂的亚洲象（n = 7）记录心电图的可行性。成功获得了六导联记录（I、II、III、aVR、aVL和aVF），在大多数动物中，aVL导联记录的质量最佳。在aVL导联中测量的变量包括心率、P波、QRS波群、T波和U波的振幅及持续时间，以及PR、QT和QU间期的持续时间。在七头大象中的五头观察到了紧跟正向P波之后的负向偏转，这代表心房复极波（Ta波）。