Table 2.
Echocardiographic measures of right ventricular systolic function in 36 dogs with MMVD
| RV function index | Group | P * | ||
|---|---|---|---|---|
| B1 (n = 12) | B2 (n = 12) | C (n = 12) | ||
| TAPSE (mm) | 12.0 ± 3.3a | 14.8 ± 2.7b | 12.2 ± 2.2a | 0.029 |
| RV S' (cm/s) | 12.6 ± 3.8 | 16.1 ± 4.8 | 12.4 ± 3.3 | 0.054 |
| RV FAC (%) | 53 ± 10 | 53 ± 10 | 48 ± 12 | 0.49 |
| RV StL (%) | −25.0 ± 4.8a | −32.3 ± 5.8b | −30.2 ± 6.5a | 0.012 |
| RV StRL (s−1) | −3.0 ± 0.9a | −3.6 ± 0.8a | −3.9 ± 0.9b | 0.041 |
| RV StG (%) | −24.6 ± 5.5 | −24.7 ± 4.7 | −24.8 ± 4.2 | 0.99 |
| RV StRG (s−1)* | −2.6 ± 0.9 | −2.4 ± 0.5 | −3.0 ± 0.9 | 0.050 |
| RVAd (cm2) | 3.5 ± 1.3 | 4.0 ± 1.1 | 2.9 ± 0.9 | 0.059 |
| RVAs (cm2) | 1.7 ± 0.8 | 1.9 ± 0.7 | 1.5 ± 0.7 | 0.41 |
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; RVAd, right ventricular area in diastole; RVAs, right ventricular area in systole.
Significant group differences are italicized.
Data are expressed as mean ± standard deviation.
*Data not normally distributed. Median RV StRG B1 (IQR) = −2.4 (−2.0 to −2.9), B2 = −2.5 (−2.7 to −2.1), C = −2.8 (−2.3 to −3.6).
Within each row, superscripts with different letters represent a statistical difference in post hoc tests (P < 0.05) between groups.
†ANOVA or Kruskal–Wallis derived P‐value.