TABLE 1.
Patient Demographic Characteristicsa
| Injured | Uninjured | |
|---|---|---|
| No. of patients | 12 (23%) | 41 (77%) |
| Age, (yr) | 72.7 ± 8.7 | 70.9 ± 9.2 |
| Sex (M/F) | 50%/50% | 68%/32% |
| Handedness (right/left) | 100%/0% | 93%/7% |
| Height (cm) | 169.0 ± 12.2 | 171.9 ± 11.4 |
| Weight (kg) | 78.5 ± 23.0 | 83.7 ± 17.5 |
| Education (yr) | 13.4 ± 3.2 | 14.2 ± 3.3 |
| Hypertension | 50% | 56% |
| Diabetes mellitus | 17% | 24% |
| Previous stroke or TIA | 42% | 32% |
| Previous MI | 17% | 29% |
| Previous contralateral CEA | 25% | 10% |
| Duration of surgery (min) | 155 ± 41.2 | 139 ± 37.2 |
| Fentanyl (μg/kg) | 1.7 ± 0.9 | 1.8 ± 0.8 |
| Midazolam (mg/kg) | 0.03 ± 0.02 | 0.03 ± 0.01 |
| Side of operation (right/left) | 42%/58% | 54%/46% |
a
TIA, transient ischemic attack; MI, myocardial infarction; CEA, carotid endarterectomy. Values are expressed as mean ± standard deviation or as a percentage of patients.