Table 4.
Time in systole, diastole, and relaxation time in HFNEF patients
| HFNEF (n = 17) |
Controls (n = 7) |
|||||
|---|---|---|---|---|---|---|
| Basal | 100/min | 120/min | Basal | 100/min | 120/min | |
| Tsys (ms) | 420 (385–453)‡ | 343 (332–370)* | 312 (297–336)*†‡ | 354 (332–374) | 332 (308–334)* | 299 (261–313)*† |
| Tdiast (ms) | 508 (450–568)‡ | 246 (230–264)* | 193 (180–206)*†‡ | 476 (362–515) | 265 (243–293)* | 191 (184–227)*† |
| Tsys (%) | 45.7 (43.1–46.8) | 58.4 (56.0–61.4)* | 62.6 (59.1–63.8)*† | 42.7 (40.5–48.2) | S.7 (51.1–58.1)* | 61.5 (53.5–63.4)*† |
| Trelax (ms) | 166 (146–190) | 153 (143–165)* | 120 (74–145)*† | 152 (122–161) | 136 (110–142) | 118 (112–135) |
| τ (ms) | 55 (50–64)‡ | 50 (45–66)‡ | 51 (45–55)*‡ | 42 (36–43) | 38 (36–40)* | 34 (31–36)*† |
| Trelax/τ | 3.08 (2.48–3.40) | 2.98 (2.14–3.36)‡ | 2.00 (1.57–3.00)*†‡ | 3.63 (3.30–4.21) | 3.71 (2.89–4.03) | 3.53 (3.29–4.12) |
Tsys, time in systole; Tdiast, time in diastole; Tsys (%), relative portion of systole; Trelax, relaxation time; Trelax/τ, ratio relaxation time to τ (isovolumetric time constant of relaxation).
*P < 0.05 vs. basal.
†P < 0.05 vs. 100/min.
‡P < 0.05 vs. controls.