Cepiel Alicja, Noszczyk-Nowak Agnieszka, Pasławski Robert, Janiszewski Adrian, Pasławska Urszula
a Department of Internal Medicine and Clinic of Diseases of Horses, Dogs and Cats , Wroclaw University of Environmental and Life Sciences , Wroclaw , Poland.
b Department and Clinic of Internal and Occupational Diseases and Hypertension , Wroclaw Medical University , Wroclaw , Poland.
Vet Q. 2017 Dec;37(1):91-97. doi: 10.1080/01652176.2017.1309599.
Invasive electrophysiology study (EPS) is one of the most important adjunct tests for the evaluation of arrhythmias in human medicine. However, EPS is neither well known nor widely used in veterinary medicine.
To define the values for intracardiac conduction parameters determined during invasive EPS in dogs.
The study included 16 admitted dogs of various breeds, sex and ages and 6 control Beagles. In the Beagles, EPS was performed twice at 6-month intervals in order to verify the reproducibility of the results.
No significant differences were found between the results of the baseline and repeated EPS performed in the Beagles. We found retrograde conduction in 13 (59%) out of 22 dogs and including 4 (31%) animals with concomitant 'jumps' in the atrioventricular node conduction curve, pointing to the presence of dual conduction in this node. The mean values of the AV and retrograde VA Wenckebach points equaled to 220 and 360 ms, respectively, suggesting that the capability of the descending route is higher than that of the ascending route.
The values determined in this study may be helpful in early detection of abnormalities in the electrical conduction system of the heart.
有创电生理检查（EPS）是人类医学中评估心律失常最重要的辅助检查之一。然而，EPS在兽医学中既不为人熟知，也未得到广泛应用。
确定犬有创EPS期间测定的心内传导参数值。
该研究纳入了16只不同品种、性别和年龄的入院犬以及6只对照比格犬。对比格犬每隔6个月进行两次EPS，以验证结果的可重复性。
比格犬基线EPS和重复EPS的结果之间未发现显著差异。我们在22只犬中的13只（59%）发现了逆向传导，其中4只（31%）动物的房室结传导曲线伴有“跳跃”，表明该节点存在双径传导。房室（AV）和逆向室房（VA）文氏点的平均值分别为220和360毫秒，表明下行路径的传导能力高于上行路径。
本研究确定的值可能有助于早期发现心脏电传导系统异常。
