Table 5.
Subgroup analysis of diastolic function of the heart in patients with increased stroke volume
| Variables | Before the usage of esmolol (n = 42) | After the usage of esmolol (n = 42) | t | P |
|---|---|---|---|---|
| IVRT (ms) | 89.8 ± 38.4 | 79.9 ± 35.3 | 1.0 | 0.162 |
| E (cm/s) | 78.0 ± 31.7 | 74.1 ± 26.8 | 0.9 | 0.178 |
| A (cm/s) | 85.7 ± 22.3 | 74.6 ± 20.6 | 3.0 | 0.001 |
| E/A | 1.0 ± 0.7 | 1.1 ± 0.7 | −1.3 | 0.097 |
| DT (ms) | 105.6 ± 39.7 | 125.4 ± 46.2 | −2.3 | 0.015 |
| A duration (ms) | 143.3 ± 35.1 | 140.4 ± 44.3 | 0.1 | 0.769 |
| Lateral Ea (cm/s) | 11.7 ± 4.4 | 11.3 ± 3.9 | 0.1 | 0.368 |
| Septal Ea (cm/s) | 9.7 ± 3.8 | 8.8 ± 3.3 | 0.2 | 0.161 |
| Lateral Aa (cm/s) | 11.3 ± 4.2 | 10.1 ± 3.5 | 2.1 | 0.047 |
| Septal Aa (cm/s) | 11.8 ± 5.3 | 10.3 ± 4.1 | 1.8 | 0.056 |
| Lateral Ea/Aa | 1.2 ± 0.6 | 1.3 ± 0.8 | −1.1 | 0.160 |
| Septal Ea/Aa | 1.0 ± 0.9 | 1.0 ± 0.9 | 0.1 | 0.945 |
IVRT: Isovolumetric relaxation time; E: Transmitral early diastolic velocity; A: Transmitral late diastolic velocity; DT: Deceleration time; Ea: Early diastolic velocity by tissue Doppler; Aa: Late diastolic velocity by tissue Doppler.