TABLE 19.1.
Electrocardiographic Values (Lead II) in Clinically Normal Rabbits
| New Zealand White Rabbits (awake)9 (N = 100: 44 M; 56 F) |
Client-Owned Fancy, Fur, and Cross Breeds (awake)20(N = 46: 24 M [8 intact]; 22 F [8 intact]) |
|||
|---|---|---|---|---|
| Parameter | Mean ± SD | Range | Mean ± SD | Range |
| Age, mo | — | 6 (all) | — | 2–84 |
| Body weight, kg | 2.62 ± 0.20 | 2.1–3.0 | — | 1.1–7.9 |
| Heart rate, beats/min | 243 ± 34 | 154– 330 | 264 ± 34 | 198–330 |
| P wave amplitude, mV | 0.05 ± 0.02 | 0.01–0.13 | 0.08 ± 0.02 | 0.04–0.12 |
| P wave duration, s | 0.032 ± 0.004 | 0.021–0.045 | 0.03 ± 0.01 | 0.01–0.05 |
| P-R interval, s | 0.050 ± 0.006 | 0.036–0.072 | 0.06 ± 0.01 | 0.04–0.08 |
| R wave amplitude, mV | 0.18 ± 0.09 | 0.04–0.42 | 0.21 ± 0.09 | 0.03–0.39 |
| QRS duration, s | 0.056 ± 0.004 | 0.043–0.066 | 0.04 ± 0.01 | 0.02–0.06 |
| Q-T interval, s | 0.143 ± 0.012 | 0.115–0.173 | 0.12 ± 0.02 | 0.08–0.16 |
| T wave amplitude, mV | 0.16 ± 0.07 | 0.01–0.51 | 0.11 ± 0.03 | 0.05–0.17 |
| Mean electrical axis | — | −60° to 180°a | 19° ± 31° | −43° to 80° |
a
In 85% of the rabbits, the mean electrical axis was −30° to 90°.