Studies regarding the electrocardiogram in cattles in Dubois lead.

There were electrocardiographic examined 203 cattle using Dubois system; the animals were in standing position and clinical healthy. The ECG’s parameters were as follow: 1 mV=10 mm and the paper speed of 25 mm/sec. The cattle electrocardiogram takes part from electrocardiography group B. The component’s values in Dubois leads are: A. Amplitude (mV, II lead): P wave = 0,176 ± 0,004; ventricular complex = 1,183 ± 0,019 and T wave = 0,454 ± 0,011; B duration (seconds): P wave = 0,086 ± 0,0009; P-R interval = 0,199 ± 0,001; ventricular complex = 0,082 ± 0,0007; Q-T interval = 0,383 ±0,002; T wave = 0,095 ± 0,001; R-R interval = 0,784 ± 0,008; P-T interval = 0,588 V 0,003; TP segment = 0,191 ± 0,006. The heat frequency was 78,48 ± 0,855 beats/min. The electrical axes are: P wave = + 77,17 ± 0,96; ventricular complex = 85,21 ± 0,62 and T wave = + 89,84 ± 0,67.