engleski

Development of the postoperative occlusion of the internal carotid artery due to present risk factors

Aim : Postoperative internal carotid (ICA) occlusion is a rare condition with few data of the risk factors. The aim of the study was to analyze risk factors for postoperative ICA occlusion. Methods: Thirty-three patients (25 male, 8 female) with postoperative ICA occlusion were examined together with clinical findings and atherosclerosis risk factors. These data were compared with 33 patients (23 male, 10 female) with satisfactory postoperative finding. Student t-test was used to compare the data (p<0.05). Results: In 31 out of 33 patients ICA occlusion was registered during the first postoperative examination, 3 months after the carotid endarterectomy (18 right, 15 left). In 8 patients combined occlusion of the common and ICA was found (4 right, 4 left). One patient developed the occlusion during the first and one during the third postoperative year. Eight patients had satisfactory postoperative finding on the contralateral ICA. Contralateral, 5 patients had moderate and one patient subtotal ICA stenosis. Clinical, three patients presented with ischemic symptoms (one stroke, two transitory ischemic attacks- TIA). Risk factors in the group with postoperative ICA occlusion were: hypertension in 18, smoking in 10, hyperlipidemia in 8, diabetes mellitus in 9, history of stroke in13, TIA in 3, heart attack in 4 and coronary disease in 3 patients and in the control group: 25, 11, 16, 7, 7, 3, 4 and 3, respectively. There was no significant difference in present risk factors. Conclusion: Postoperative ICA occlusion is not caused by atherosclerosis risk factors but with perioperative complications or genetic influence.

postoperative ; occlusion ; ICA ; risk factors

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