Table 3.
Estimating early diastolic velocity of the mitral annulus from the integral of the systolic velocity of the mitral annulus (s′ integral), ratio of the early and late velocities of the mitral inflow (E/A ratio) and time constant of the isovolumic pressure decay (τ0) by multiple linear regression
| s′ integral | E/A ratio | τ0 | |||||
|---|---|---|---|---|---|---|---|
| r, full model (95% CI) | Partial r (95% CI) | P-value | partial r (95% CI) | P-value | partial r (95% CI) | P-value | |
| All subjects | 0.82 (0.77–0.85) | 0.78 (0.73–0.84) | <0.0001 | 0.28 (0.12–0.39) | <0.0001 | −0.21 (−0.34 to −0.07) | 0.0003 |
| HOCM | 0.79 (0.62–0.89) | 0.79 (0.62–0.89) | <0.0001 | 0.24 (−0.1 to 0.53) | 0.16 | 0.023 (−0.31 to 0.35) | 0.9 |
| SHF | 0.53 (0.33–0.68) | 0.53 (0.33–0.68) | <0.0001 | 0.10 (−0.14 to 0.33) | 0.4 | −0.073 (−0.31 to 0.17) | 0.55 |
| Healthy volunteers | 0.83 (0.78–0.87) | 0.60 (0.50–0.68) | <0.0001 | 0.78 (0.72 to 0.83) | <0.0001 | −0.1 (−0.24 to 0.04) | 0.16 |
CI, confidence interval; HOCM, hypertrophic cardiomyopathy; SHF, systolic heart failure.