Age (years, mean ± SD)
|
68 ± 10
|
60 ± 12
|
Male
|
12
|
7
|
Clinical features at presentation
| | |
Cerebral TIA
|
9
|
8
|
Ischaemic stroke
|
3
|
3
|
Systolic blood pressure (mmHg, mean ± SD )
|
159 ± 25
|
167 ± 29
|
Diastolic blood pressure (mmHg, mean ± SD)
|
84 ± 15
|
91 ± 13
|
Vascular risk factors
| | |
Hypertensiona
|
10
|
10
|
Hyperlipidaemiab
|
10
|
10
|
Diabetes mellitus
|
2
|
3
|
Cigarette smoking (current or in last 5 years)
|
7
|
7
|
History of stroke >3 months ago
|
3
|
4
|
History of ischaemic heart disease
|
2
|
6
|
Angiogram
| | |
Contralateral ICA stenosis 50% to 69%
|
5
|
2
|
Stenosis 70% to 99%
|
1
|
2
|
Occlusion
|
0
|
1
|
Ipsilateral ECA stenosis ≥ 50%
|
4
|
1
|
Vertebral artery stenosis ≥ 50%
|
5
|
5
|
Collateral flow via anterior communicating artery
|
12
|
10
|
Collateral flow via ophthalmic artery
|
5
|
5
|
Collateral flow via posterior communicating artery
|
9c
|
11
|
Leptomeningeal collaterals
|
7d
|
9
|