Table 1.
Characteristics of the control group and groups of patients with asymptomatic and symptomatic carotid artery stenosis.
| Variable | Control group (n = 15) | Asymptomatic group (n = 24) | Symptomatic group (n = 11) |
|---|---|---|---|
| Age (year) (M ±m) | 55 ± 7 | 65 ± 10 | 70 ± 6 |
| Gender (male/female), n | 8/7 | 15/9 | 10/1 |
| The degree of stenosis (%)(M ± m) | – | 82 ± 10 | 83 ± 10 |
| Type of atherosclerotic plaque according gray-weale scale, n | |||
| I | – | 3 | 1 |
| II | – | 20 | 7 |
| III | – | 1 | 2 |
| IV | – | – | 1 |
| Type of operation CEA/CAS, n | – | 12/12 | 5/6 |
| Modified Rankin scale, preoperative/postoperative (M ± m) | – | 0.5 ± 0.5/0.5 ± 0.3 | 1.2 ± 0.8/1.0 ± 0.5 |
| Hypertension, n | – | 23 | 10 |
| Diabetus mellitus, n | – | 3 | 1 |
| Ischemic heart disease, n | – | 17 | 9 |
| Baseline mean BP (mm Hg) (M ± m) | 89 ± 12 | 97 ± 10 | 92 ± 11 |
| Baseline BFV in MCA (cm/s) ipsilateral/contralateral (M ± m) | 68 ± 18* | 69 ± 37/76 ± 20 | 63 ± 12/67 ± 23 |
| Baseline PS (rad) ipsilateral/contralateral (M ± m) | 1.1 ± 0.2* | 0.5 ± 0.3/0.8 ± 0.5 | 0.4 ± 0.2/1.0 ± 0.5 |
CEA, Carotid endarterectomy; CAS, carotid balloon angioplasty with stenting; BP, blood pressure; BFV, blood flow velocity; MCA, middle cerebral artery; PS, phase shift;
*
values for the right middle cerebral artery in control group.