Table 3.
End-diastolic velocity, end-systolic velocity, and resistance index measured by cranial Doppler ultrasonography
| Group | Left middle cerebral artery | Right middle cerebral artery | ||||
|---|---|---|---|---|---|---|
|
|
|
|||||
| EDV (cm/s) | ESV (cm/s) | RI | EDV (cm/s) | ESV (cm/s) | RI | |
| Sham group at 24 h | 26.80±1.00 | 9.20±0.30 | 0.60±0.02 | 23.20±4.30 | 11.60±0.40* | 0.60±0.21 |
| HI group 0 h | 16.8±1.60§ | 6.50±0.40 | 0.60±0.02 | 17.00±1.10 | 5.90±0.30 | 0.60±0.01 |
| HI group 4 h | 19.1±5.50§ | 4.70±0.90§ | 0.70±0.08§,a | 22.20±4.10 | 3.30±0.30*,§ | 0.80±0.03*,§,a |
| HI group 8 h | 32.20±4.40a,b | 13.40±1.50a,b | 0.60±0.05b | 24.60±6.90a | 9.30±4.20b | 0.60±0.05b |
| HI group 12 h | 24.90±8.80 | 8.30±2.90c | 0.70±0.04b | 27.50±8.50 | 5.40±2.30 | 0.80±0.03*,b,c |
| HI group 24 h | 40.50±2.60a,b,d | 13.10±0.90a,b,d | 0.70±0.03b | 19.70±1.00* | 4.00±0.80*,§,b,c,d | 0.80±0.04*,§,a,c |
| F value | 7.045 | 7.425 | 4.045 | 1.181 | 9.447 | 17.558 |
| P value | 0.000 | 0.000 | 0.008 | 0.347 | 0.000 | 0.000 |
Data are presented as mean ± standard deviation. EDV: end-diastolic velocity; ESV: end-systolic velocity; RI: resistance index.
*
P < 0.05 vs. left middle cerebral artery;
§
P < 0.05 vs. sham operation group at 24 h;
a
P < 0.05 vs. HI group at 0 h;
b
P < 0.05 vs. HI group at 4 h;
c
P < 0.05 vs. HI group at 8 h;
d
P < 0.05 vs. HI group at 12 h.