Parameter | Noninvolvement | < 50% stenosis | 50–69% stenosis | 70–99% stenosis | Value | P | |
---|---|---|---|---|---|---|---|
(n = 182) | (n = 40) | (n = 23) | (n = 46) | ||||
AT | < 0.07 s | 152 (83.5%) | 28 (70.0%) | 9 (39.1%) | 19 (41.3%) | 45.328 | < 0.001 |
≥ 0.07 s | 30 (16.5%)a | 12 (30.0%)b | 14 (60.9%)c | 27 (58.7%)c | |||
RPSV (cm/s) | 106.00 (87.00, 130.00)a | 174.00 (116.00, 227.00)b | 219.00 (185.25, 307.50)c | 300.00 (195.00, 404.00)c | 134.040 | < 0.001 | |
IPSV (cm/s) | 36.05 ± 11.43ab | 39.40 ± 14.77a | 31.00 ± 8.31bc | 30.26 ± 16.25c | 4.973 | 0.002 | |
IEDV (cm/s) | 11.85 ± 4.39 | 11.65 ± 4.88 | 11.65 ± 3.83 | 12.61 ± 5.43 | 0.429 | 0.732 | |
IRI | 0.66 ± 0.11ab | 0.69 ± 0.11a | 0.62 ± 0.10bc | 0.57 ± 0.15d | 12.450 | < 0.001 | |
RAR | 0.89 (0.66, 1.16)a | 1.11 (0.76, 1.38)b | 1.41 (1.07, 1.98)c | 2.25 (1.34, 3.45)d | 72.282 | < 0.001 | |
RIR | 3.11 (2.33, 3.95)a | 4.72 (2.90, 6.65)b | 6.90 (5.92, 9.24)c | 10.00 (6.42, 16.65)d | 123.597 | < 0.001 |