Risk Factors for Development of Postoperative Cerebral Hyperperfusion on SPECT
| Postoperative hyperperfusion | |||
| Risk factor | Yes (n = 13) | No (n = 99) | P |
| Age (y) | 70.8 ± 6.3 | 68.4 ± 6.8 | 0.2726 |
| Male sex | 13 (100) | 92 (93) | >0.9999 |
| Hypertension | 13 (100) | 89 (90) | 0.6024 |
| Diabetes mellitus | 3 (23) | 39 (39) | 0.3643 |
| Hyperlipidemia | 9 (69) | 52 (53) | 0.3759 |
| Symptomatic lesions | 12 (92) | 63 (64) | 0.0570 |
| Degree of ICA stenosis (%) | 89.5 ± 9.8 | 87.2 ± 8.1 | 0.0785 |
| Duration of ICA clamping (min) | 35.3 ± 4.0 | 36.3 ± 5.6 | 0.6198 |
| Preoperative CBRBP/CBF AI | 111.2 ± 6.3 | 101.9 ± 4.8 | <0.0001 |
| Preoperative CVR to acetazolamide (%) | 6.3 ± 9.9 | 29.9 ± 10.5 | <0.0001 |
Data are mean ± SD, and data in parentheses are percentages.