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首页> 外文期刊>American Journal of Veterinary Research >Analysis of the atrial repolarization wave in dogs with third-degree atrioventricular block
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Analysis of the atrial repolarization wave in dogs with third-degree atrioventricular block

机译：三级房室传导阻滞犬的房性复极波分析

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Objective-To characterize the electrocardiographic features of the atrial repolarization (Ta) wave in dogs with third-degree atrioventricular (AV) block. Sample-ECGs of 36 dogs with third-degree AV block and no identifiable structural heart diseases. Procedures-Standard 12-lead ECGs were acquired with a digital system, and measurements were manually edited. Results-A Ta wave was detectable in all dogs for at least 1 ECG lead. The Ta wave had negative polarity in leads I, II, III, and aVF and positive polarity in leads aVL and aVR, with a mean electrical axis of -114.26 degrees. Mean duration and mean amplitude of the Ta wave in lead II were 140.2 milliseconds and -0.09 my, respectively, with the ratio for the Ta-to-P wave duration of 2.3 and the ratio of Ta-to-P wave amplitude of -0.35. Significant correlations were found between the Ta wave duration and duration of the P-Ta interval, Ta wave amplitude and the ECG lead, Ta wave duration and body weight, and duration of the P-Ta interval and atrial rate. Measurements of the Ta wave were repeatable. Conclusions and Clinical Relevance-Measurements of the Ta wave in dogs with third-degree AV block were repeatable. The values for the Ta wave reported here can be used as reference values for dogs with AV conduction disturbances and an echocardiographically normal atrial size. Further studies are needed to validate these results in dogs with structural heart diseases.
机译：目的-表征三级房室（AV）阻滞犬心房极化（Ta）波的心电图特征。 36例三级房室传导阻滞且无可识别的结构性心脏病的狗的样本心电图。程序-用数字系统获取标准的12导联心电图，并手动编辑测量值。结果：所有狗中至少有1条ECG导联都可检测到Ta波。 Ta波在导线I，II，III和aVF中具有负极性，在导线aVL和aVR中具有正极性，平均电轴为-114.26度。铅II中Ta波的平均持续时间和平均振幅分别为140.2毫秒和-0.09 my，Ta-P波持续时间的比值为2.3，Ta-P波振幅比为-0.35 。在Ta波持续时间和P-Ta间隔持续时间，Ta波振幅和ECG导联，Ta波持续时间和体重以及P-Ta间隔持续时间和心房率之间发现显着相关性。 Ta波的测量是可重复的。结论与三级房室传导阻滞犬的Ta波重复性和临床相关性可重复。此处报告的Ta波值可用作具有AV传导障碍和超声心动图正常心房大小的狗的参考值。需要进一步的研究来验证结构性心脏病犬的这些结果。

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