Table 3.
Intra‐ and interobserver repeatability for RV function indices in 12 dogs with MMVD
| Intra‐observer repeatability | Bland–Altman | CV (%) | Interobserver repeatability | Bland–Altman | CV (%) | ||
|---|---|---|---|---|---|---|---|
| Bias | LOA* | Bias | LOA* | ||||
| TAPSE (mm) | 0.0 | −0.2, 0.2 | 0.5 | TAPSE (mm) | −0.3 | −1.5, 1.0 | 3.6 |
| RV S' (cm/s) | −0.2 | −1.4, 0.9 | 3.6 | RV S' (cm/s) | 0.4 | −1.7, 2.5 | 6.4 |
| RV FAC (%) | 3.0 | −9.0, 15.0 | 8.4 | RV FAC (%) | 4.7 | −23.5, 32.9 | 17.3 |
| RV StL (%) | 0.6 | −8.2, 9.3 | 11.4 | RV StL (%) | 10.1 | −30.0, 50.2 | 12.3 |
| RV StRL (s−1) | 0.0 | −1.5, 1.6 | 17.9 | RV StRL (s−1) | 3.8 | −2.9, 10.4 | 20.1 |
| RV StG (%) | 0.0 | −4.5, 4.6 | 6.5 | RV StG (%) | −0.2 | −6.0, 5.7 | 8.4 |
| RV StRG (s−1) | 0.1 | −0.6, 0.8 | 9.1 | RV StRG (s−1) | 0.5 | −1.0, 2.0 | 16.9 |
TAPSE, tricuspid annular plane systolic excursion; RV S', systolic myocardial velocity of the lateral tricuspid annulus; RV FAC, fractional area change in the right ventricular inlet; RV StL, longitudinal strain of the right ventricular free wall; RV StRL, longitudinal strain rate of the right ventricular free wall; RV StG, global longitudinal strain of the right ventricle; RV StRG, global longitudinal strain rate of the right ventricle.
*95% limits of agreement, CV, coefficient of variation.