过刊浏览

正常家鸽的宽频带心电图时域值和功率谱

艾洪滨, 张学英, 祝建平, 邱军, 王英红

山东师范大学生命科学学院. 山东, 济南 250014

摘要

实验用南京新博公司生产的NHE-1000型宽频带心电信息检测分析仪,研究了正常家鸽宽频带心电图(WFB-ECG)的时域值和QRS波群的功率谱.主要结果如下:(1)Ⅱ、Ⅲ、aVF导联,QRS波群均为主波向下,形成rS或rSr'型,无Q波,与人类相应导联的心电图波形相反;S波的升支均有一较大的切迹(无一例外),Ⅱ导联切迹幅度为0.413±0.133 mV,宽度为9.733±1.291 ms;Ⅱ、Ⅲ、aVF导联T波直立,方向均与主波相反(1例除外).aVR导联,QRS波群主波向上,形成Rs型,T波倒置,与主波方向相反(无一例外),也与人类aVR导联的波形相反.(2)P波时程与P-R段之比值为0.8,而人的为1.0-1.6,小鼠的为0.4.(3)Ⅱ导联QRS波群的功率谱特点:以低频信号(低于80 Hz)为主,而高频频段的相对能量比小鼠的低,比人的高,其中高频频段100-1000 Hz的相对能量为(10.181±7.443)%,80-300Hz为(15.418±10.579)%.(4)QRS波群的额面心电轴为-118°±10°(-96°～-136°);(5)心电向量环的位置与人类的相反,位于-90°～-180°相限.这些现象的产生原因可能是由于家鸽心室Purkinje纤维末梢延伸到心外膜下心肌,导致心外膜下心肌先除极化,心内膜下心肌后除极化而产生的。

关键词： 家鸽; 宽频带心电图; 时域值; 功率谱; 向量环; 切迹

Time domain and power spectrum of wide frequency band electrocardiogram in pigeons

Ai Hongbin, Zhang Xueying, Zhu Jianping, Qiu Jun, Wang Yinghong

Life Science College of Shandong Normal University. Jinan 250014,China

Abstract

The wide frequency band ECG (WFB-ECG) was recorded in 33 (anesthetized) normal pi-geons by the microprocessor ECG system (made in Nanjing University) with a wide-frequency response (0- 1000 Hz), a high-speed sweep (up to 1401 mm/s) and a high sensitivity (up to 28 mm/mV). The re-cording methods for limb leads in the pigeon were the same as those in man, except that the needle elec-trodes (made by No. 5 needles) were subcutaneously inserted in the bases of the wings and in the legs. Westudied the features of time domain and power spectrum of pigeons WFB-ECG. It presents P, R, S and Twaves, but no Q wave, basically similar to the results from Aves described by Sturkie. But there are stillmany characters that were not be recorded on the conventional ECG: (1) the main QRS complex is invertedand forms the type of rS or rSr', no Q wave in leads Ⅱ, Ⅲ, aVF, and the S-T segment is absent, which isdifferent from that of humans. The T wave is upright in leads Ⅱ, Ⅲ, and aVF (except one), in agreementwith that of man.

Key words: Pigeons;Wide frequency band ECG;Time domain;Power spectrum;Cardiac vector loop;Notch

收稿日期：　　录用日期：

通讯作者：　　E-mail:

引用本文：

艾洪滨, 张学英, 祝建平, 邱军, 王英红. 正常家鸽的宽频带心电图时域值和功率谱[J]. 生理学报 2003; 55 (5): .

Ai Hongbin, Zhang Xueying, Zhu Jianping, Qiu Jun, Wang Yinghong. Time domain and power spectrum of wide frequency band electrocardiogram in pigeons. Acta Physiol Sin 2003; 55 (5): (in Chinese with English abstract).