关键词: 高原鼠兔, 心电图, 东北地区

Abstract: In order to investigate whether it was suitable to choose plateau pikas(Ochotona curzoniae) as an object of experimental electricardiographic observation, the electricardiograms (ECG) of 30 grown up plateau pikas were measured. The results revealed that the basic wave pattern of the ECG of plateau pika was similar to that of human being. Heart rhythm of plateau pika was sinus original. Owing to the fast heart rate of plateau pika (359 6±28 3 beats per minute, bpm), the P\|wave of the pika ECG usually occured on the descending branch of T\|wave. The Q\|T interval and K\|value of the pika were both higher than those of rat, mouse, and clawed jird. The range of the pika ECG axis (59 5±43 6 degrees)changed greatly. Seventy three percent (73%) of them showed S\|T segments in their ECG. Compared with the ECG of rodents (rat, mouse and clawed jird), the ECG of plateau pika was move closed to that of human beings. The results suggested that it would be more suitable to choose plateau pikias as a new kind of laboratory animals for electrocardiographic experiental studies.

Key words: Plateau pika (Ochotona curzoniae), Electrocardiogram, the Northeast district