200只比格犬心电图分析

目的　对不同年龄的比格 (Beagle)犬 ,进行了6个导联的心电图描记和分析 ,建立了心电图基本数据。方法　 2 0 0条 6～ 36月龄Beagle犬 ,在清醒情况下记录Ⅰ、Ⅱ、Ⅲ、aVR、aVL和aAF 6个导联的心电图。结果　 2 0 0只Beagle犬均为窦性心律。不同性别和年龄的犬心率不同 ,雌性犬略快 ,随年龄增加 ,心率变缓。Beagle犬心电图各波形与人相似 ,P R间期为 0 .0 9～ 0 .12s ,QRS波群为 0 .0 4～ 0 .0 6s ,Q T间期为 0 .17～ 0 .2 1s。随着年龄增大 ,P R间期和Q T间期延长 ,QRS波群年龄性别差异不显著。S T段一般与QRS末端合并 ,大多数位于等电位线 ,S T段上移的占 12 % ,一般为上抬或斜升型下降 ,但一般不超过 1mm。Beagle犬存在着窦性心律不齐 ,比例为 15 %。结论　建立了心电图基本数据 ,可供实验时参考

Analysis of electrocardiogram in 200 beagle dogs

AIM In order to establish the electrocardiogram(ECG) database in beagle dog. METHODS ECG were examined in 200 dogs between 6 to 36 months old. Electrocardiogram of six leads including Ⅰ, Ⅱ, Ⅲ, aVR, aVL and aAF was recorded in a conscious state. RESULTS ]All dogs had a sinus rhythm. The heart rate was related to sex and age, slower in female and faster in younger. The shape of dog ECG was similar to that of human, P-R interval was 0.09－0.12 s, QRS complex 0.04－0.06 s and Q- T interval was 0.12－0.21 s. P-R and Q- T intervals were lengthened with age, but QRS showed no correlation with ages and sex. ST segment was blended with the terminal of QRS complex, and mostly located at the iso-electric level, but 12% of ST segment shifted straightly upward or slanted down, not exceeding 1 mm. Sinus arrhythmia appeared in 15% of beagle dogs. CONCLUSION The basic date of ECG of beagle dogs are provided to be a reference in related experiments.