Clinical backgrounds, symptoms, and risk factors in posterior circulation ischemia and control groups
| PCI Group | Control Group | P | |
|---|---|---|---|
| Clinical Backgrounds | |||
| N (male vs female) | 21 (10:11) | 16 (11:5) | NS† |
| Age range, y (mean) | 41–80 (61.3) | 40–85 (61.6) | NS* |
| Body mass index,kg/m2 | 24.8 ± 4.0 | 22.7 ± 3.9 | NS* |
| SBP, mm Hg | |||
| Intermittent | 135.0 ± 18.1 | NS* | |
| Attack | 148.6 ± 19.6 | 132.3 ± 12.9 | <.001 |
| Clinical Symptoms | |||
| Paroxysmal vertigo (with nystagmus) | 5 (3) | 0 | |
| Paroxysmal dizziness (with nystagmus) | 16 (1) | 0 | |
| Hearing loss | 2 | 2 | |
| Headache | 0 | 1 | |
| Chronic neurologic deficit | 0 | 3 | |
| Transient neurologic deficit | 4 | 0 | |
| Risk Factors for Cerebral Blood Flow | |||
| Hypertension | 11 | 3 | NS† |
| Diabetes Mellitus | 1 | 0 | NS† |
| Hyperlipidemia | 7 | 7 | NS† |
| Smoking | 3 | 4 | NS† |
Note.—PCB, posterior circulation ischemia; SBP, systolic blood pressure; hypertension, SBP > 140 mm Hg; diabetes mellitus, fasting blood glucose level > 200 mg/dL; hyperlipidemia, total blood cholesterol level > 200 mg/dL or neutral fat > 160 mg/dL; smoker, habitual smoking during study.
* Student t test.
† Fisher exact probability test.