TABLE 19.2.
M-mode and 2-dimensional Echocardiographic Measurements in Clinically Normal New Zealand White Rabbitsa,b
| Parameter | Awake(N = 100)9 | Sedatedc(N = 26)7 |
|---|---|---|
| Body weight, kg | 2.6 ± 0.2 | 2.3 ± 0.4 |
| Age, mo | 6 (all) | 4 - 5 |
| Sex | 44 M; 56 F | 26 M; 0 F |
| Heart rate, beats/min | 227 ± 36 | 263 ± 37 (Doppler) |
| IVSd, mm | 2.74 ± 0.51 | 2.65 ± 0.31 |
| IVSs, mm | 4.01 ± 0.70 | 3.63 ± 0.34 |
| LVIDd, mm | 13.28 ± 1.91 | 13.51 ± 1.05 |
| LVIDs, mm | 8.32 ± 1.47 | 8.64 ± 0.82 |
| LVFWd, mm | 2.78 ± 0.54 | 2.25 ± 0.29 |
| LVFWs, mm | 3.56 ± 0.52 | 3.15 ± 0.38 |
| FS, % | 37.17 ± 4.99 | 36.01 ± 4.31 |
| EF, % | 71.12 ± 6.32 | 69.58 ± 5.33 |
| LA, mm | 8.62 ± 1.02 (2D) | 7.49 ± 1.14 |
| Ao, mm | 7.90 ± 0.77 (2D) | 6.57 ± 0.46 |
| LA/Ao | 1.09 ± 0.10 (2D) | 1.15 ± 0.19 |
| EPSS, mm | — | 1.41 ± 0.25 |
Ao, aorta diameter; EF, ejection fraction; EPSS, E-point to septal separation; FS, fractional shortening; IM, intramuscularly; IVSd, interventricular septum in diastole; IVSs interventricular septum in systole; LA, left atrial diameter; LVIDd, left ventricular internal diameter in diastole; LVIDs, left ventricular internal diameter in systole; LVFWd, left ventricular free wall in diastole; LVFWs, left ventricular free wall in systole; SC, subcutaneously.
a
Values are mean ± standard deviation except for age and sex.
b
All values are M-mode derived unless indicated otherwise (2D).
c
Sedated with ketamine (20 mg/kg SC) and midazolam (2 mg/kg SC).