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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

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Citing This Article：

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).