Table 3 Comparison between the 3 groups regarding TCD parameters
|  | Group 1 (250–350 cm/H2O) (n = 24) | Group 2 (350–450 cm/H2O) (n = 8) | Group 3 (> 450 cm/H2O) (n = 8) | p value | |
|---|---|---|---|---|---|
PSV | Range (cm/s) | 76.5–117.6 | 94.8–137.6 | 96.9–141.1 | 0.001* |
Mean | 89.0 | 114.8 | 130.8 | ||
± SD (cm/s) | ± 9.5 | ± 16.3 | ± 14.3 | ||
EDV | Range (cm/s) | 24.0–49.5 | 26.9–45.6 | 24.7–39.9 | 0.029* |
Mean | 35.6 | 33.7 | 28.2 | ||
± SD (cm/s) | ± 6.7 | ± 7.1 | ± 5.0 | ||
RI | Range (cm/s) | 0.4–0.7 | 0.6–0.8 | 0.6–0.8 | 0.001* |
Mean | 0.6 | 0.7 | 0.8 | ||
± SD (cm/s) | ± 0.1 | ± 0.1 | ± 0.1 | ||
PI | Range (cm/s) | 0.5–1.3 | 0.9–1.4 | 0.6–1.4 | 0.005* |
Mean | 0.9 | 1.1 | 1.1 | ||
± SD (cm/s) | ± 0.2 | ± 0.2 | ± 0.3 | ||