Table 2. Spectral Doppler echocardiographic reference intervals obtained in a population of 57 healthy adult American Staffordshire Terriers.
| Variable | Median | Lower RI | (90% CI) | Upper RI | (90% CI) |
|---|---|---|---|---|---|
| Aovmax (m/sec) | 1.77 | 1.17 | 1.17–1.23 | 2.45 | 2.30–2.46 |
| PAvmax (m/sec) | 1.13 | 0.76 | 0.74–0.88 | 1.70 | 1.60–1.72 |
| MV E (m/sec) | 0.92 | 0.50 | 0.45–0.67 | 1.29 | 1.13–1.31 |
| MV A (m/sec) | 0.67 | 0.36 | 0.35–0.41 | 1.16 | 0.99–1.18 |
| E/A | 0.85 | 0.90 | 0.84–1.07 | 1.88 | 1.79–1.88 |
RI, reference interval; CI, confidence interval; Aovmax, peak aortic flow velocity; PAvmax, peak pulmonary flow velocity; MV E, mitral valve E wave velocity; MV A, mitral valve A wave velocity; E/A, mitral valve E and A velocities ratio.