Contralateral Occlusion Increases the Risk of Neurological Complications Associated with Carotid Endarterectomy

Table 1

Analysis of demographic factors in 1639 primary carotid revascularizations.

	CO; 136 cases		Control group; 1503 cases
Age (years)	67.02 ± 7.9		69.72 ± 8.13		<0.0001; (95% CI: 4.12 ± 1.27)
Sex: males	114	83.8%	1054	68.3%	0.001
Risk factors
Smoke	103	75.7%	828	53.7%	<0.0001
Hypertension	104	76.5%	1238	80.2%	0.111
Diabetes	42	30.9%	422	27.3%	0.551
Hyperlipidemia	60	44.1%	637	41.3%	0.763
Ischemic heart disease	41	30.1%	518	33.6%	0.356
Peripheral arterial disease	45	33.1%	248	16.1%	<0.0001
Abdominal aortic aneurysm	3	2.2%	72	4.7%	0.243
Neurological presentation
Asymptomatic	50	36.8%	838	55.8%	<0.0001
Symptomatic	86	63.2%	665	46.4%
TIA	60	44.1%	491	32.7%
STROKE	26	19.1%	174	11.6%
Shunt implantation	40	29.4%	121	8%	<0.0001
Infarct on neuroimaging^*					<0.0001
Yes	65	47.8%	379	25.2%
Ipsilateral to CEA	12	8.8%	213	14.2%
Contralateral to CEA	41	30.2%	64	4.2%
Bilateral	12	8.8%	102	6.8%
No/NK	71	52.2%	1124	74.8%

CO: contralateral carotid occlusion; NK: not known; ^*detected by either brain CT or MRI.