Patient demographics according to new events or no events
| No Events | New Events | P Value | |
|---|---|---|---|
| Age (yr) | 68 | 66 | .64 |
| Sex (%) | |||
| Male | 46 | 42 | .63 |
| Female | 8 | 4 | |
| Ipsilateral GM PSC (mean) | 2.70 ± 0.41 | 2.40 ± 0.22 | .03 |
| Contralateral GM PSC (mean) | 2.77 ± 0.49 | 2.74 ± 0.40 | .91 |
| hAI (mean) | 3.98 ± 5.73 | 13.01 ± 7.58 | .004 |
| ETCO2 change (mean) | 7.0 ± 1.8 | 8.0 ± 3.3 | .34 |
| MAP (mean) | 114.5 ± 12.4 | 104 ± 16.8 | .11 |
| Contralateral carotid disease | |||
| 0%–30% | 9 (60%) | 5 (62.5%) | |
| 50%–70% | 1 (6.7%) | 2 (25%) | .651 |
| 70%–79% | 1 (6.7%) | 0 | |
| 80%–99% | 3 (20%) | 1 (12.5%) | |
| 100% | 1 (6.7%) | 0 | |
| Hypertension (%) | 100 | 100 | 1 |
| Ischemic heart disease | 3 (21.4%) | 1 (11%) | .52 |
| Diabetes | 3 (21%) | 4 (44%) | .24 |
| Smoking | |||
| Nonsmoker | 0 | 1 (12.5%) | |
| Ex-smoker | 7 (50%) | 3 (37.5%) | .37 |
| Smoker | 7 (50%) | 4 (50%) | |
| Type of presenting symptoms | |||
| Amaurosis fugax | 4 (27%) | 0 | |
| Stroke | 8 (53%) | 4 (50%) | .158 |
| TIA | 3 (20%) | 4 (50%) |
Note:—MAP indicates mean arterial pressure.