Periprocedural complications within 30 days after CAS according to age or presenting event and treatment
| Variable | Unprotected CAS | Protected CAS | P* |
|---|---|---|---|
| Age ≤75 y | |||
| No. | 52 | 138 | |
| Minor stroke, n/N (%) | 4/52 (7.7) | 5/138 (3.6) | .3 |
| Major stroke, n/N (%) | 0/52 (0) | 0/138 (0) | NA |
| Death, n/N (%) | 0/52 (0) | 0/138 (0) | NA |
| Any stroke or death, n/N (%) | 4/52 (7.7) | 5/138 (3.6) | .3 |
| Age >75 y | |||
| No. | 16 | 37 | |
| Minor stroke, n/N (%) | 2/16 (12.5) | 2/37 (5.4) | .6 |
| Major stroke, n/N (%) | 0/16 (0) | 1/37 (2.7) | 1.0 |
| Death, n/N (%)† | 0/16 (0) | 1/37 (2.7) | 1.0 |
| Any stroke or death, n/N (%) | 2/16 (12.5) | 4/37 (10.8) | 1.0 |
| Symptomatic patients | |||
| No. | 47 | 87 | |
| Minor stroke, n/N (%) | 5/47 (10.6) | 5/87 (5.7) | .3 |
| Major stroke, n/N (%) | 0/47 (0) | 0/87 (0) | NA |
| Death, n/N (%)† | 0/47 (0) | 1/87 (1.1) | 1.0 |
| Any stroke or death, n/N (%) | 5/47 (10.6) | 6/87 (6.9) | 0.5 |
| Asymptomatic patients | |||
| No. | 21 | 88 | |
| Minor stroke, n/N (%) | 1/21 (4.8) | 2/88 (2.2) | .5 |
| Major stroke, n/N (%) | 0/21 (0) | 1/88 (1.1) | 1.0 |
| Death, n/N (%) | 0/21 (0) | 0/88 (0) | NA |
| Any stroke or death, n/N (%) | 1/21 (4.8) | 3/88 (3.4) | .6 |
Note:—CAS indicates carotid angioplasty and stent placement; NA, not applicable.
* P values are from χ2 analysis.
† In the group of patients treated with cerebral protection devices, there was 1 nonstroke-related death secondary to pneumonia 3 weeks after the procedure.