Published in Scientific Works. Series C. Veterinary Medicine, Vol. LXX, Issue 1
Written by Marian GHIȚĂ, Răzvan DOBRE, Simona NICOLAE, Adrian RĂDUȚĂ, Ioana Nicole REU, Iuliana CODREANU, Gabriel COTOR
In this study, we recorded and analysed electrocardiograms of different dog breeds. All the animals included in the study were healthy in terms of cardiac pathology. Upon analysing the obtained results, we found that Labrador Retrievers exhibited the highest P wave amplitude (0.40±0.05 mV). Regarding the R wave amplitude, high values were observed both in medium-sized breeds (Beagle – 1.70±0.16 mV) and large breeds (Rottweiler – 2.43±0.30 mV). As for the T wave amplitude, high values were observed in small breeds (Yorkshire Terrier – 0.24±0.14 mV) and medium-sized breeds (Cocker Spaniel – 0.24±0.14 mV), while large breeds (Labrador and Rottweiler) had the lowest values (0.21±0.14 mV). Regarding the duration of the main ECG components, it was observed that the P wave had the shortest duration (0.02±0.01 s) in Beagles and the longest duration (0.08±0.04 s) in Labrador Retrievers. The PR interval had the shortest duration (0.04±0.01 s) in Beagles and the longest duration (0.10±0.02 s) in Rottweilers. The QRS complex had the shortest duration (0.02±0.01 s) in Beagles. The QT interval had the shortest duration (0.16±0.01 s) in Yorkshire Terriers. The T wave had the same duration (0.04±0.01 s) for all examined breeds. Regarding heart rate, it was observed that larger dogs have a lower heart rate compared to smaller dogs.
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