200只比格犬心电图分析

Analysis of electrocardiogram in 200 beagle dogs

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 。

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.