Pre-CAS data compared with post-CAS data 30 days later and P values; early post-CAS data compared with post-CAS data, at 30 days and P value (statistical significance)
| Doppler values | Pre-CAS | Early Post-CAS | Post-CAS, at 30 days |
|---|---|---|---|
| iMCA-MFV | 50.3 ± 17.0 | 63.0 ± 21.7 | 52.8 ± 15.6** |
| iMCA-PI | 0.84 ± 0.19** | 1.02 ± 0.22 | 1.12 ± 0.23** |
| iCVR | 26.0 ± 17.3** | 37.0 ± 22.0 | |
| cMCA-MFV | 51.5 ± 17.4 | 54.1 ± 16.9 | 49.6 ± 16.9* |
| cMCA-PI | 0.98 ± 0.23 | 1.03 ± 0.23 | 1.02 ± 0.26 |
| cCVR | 30.1 ± 18.2 | 33.5 ± 17.4 |
Note:—CAS indicates carotid angioplasty stent placement; i, ipsilateral; MCA, middle cerebral artery; MFV, mean flow velocity; PI, pulsatility index; CVR, cerebrovascular reserve; c, contralateral.
* P < .05.
** P < .01.