Stenotic coiling and kinking of the internal carotid artery.

Between January 1979 and December 1991, 174 of a total of 2304 carotid reconstructions (7.5%) were performed in 166 patients for stenotic coiling or kinking of the internal carotid artery. There was a 1.4 male predominance and the mean age of the patients was 66.3 +/- 9.6 years (range 38 to 91 years). Seventeen patients (9.8%) were asymptomatic, 54 (31%) were symptomatic because of a previous stroke, and 103 (59.2%) had had transient ischemic attacks. The symptoms were hemispheric in 108 (62.1%) cases, ocular in 19 (10.9%), and vertebrobasilar in 30 (17.2%). The stenotic coiling or kinking was isolated in 35 (20.1%) cases and associated with other lesions of the internal carotid artery in 139 (79.9%). These included 119 atherosclerotic stenoses, 14 aneurysms, and six stenotic lesions due to fibromuscular dysplasia. Angioplasty of the carotid bifurcation was performed in 102 (58.6%) patients, associated with endarterectomy in 84 (48.3%) cases and with dilatation of dysplastic lesions in six (3.5%) cases. A bypass graft and resection and anastomosis of the carotid artery were performed in 36 (20.7%) patients each. There were four postoperative deaths (2.3%): two were due to neurologic causes, one to heart disease, and one to complications of an associated surgical procedure. Five patients (2.9%) had postoperative strokes and eight (4.6%) had transient ischemic attacks. At postoperative follow-up investigations four (2.3%) patients had carotid occlusions and 10 (5.7%) had morphologic abnormalities. At 5 years, actuarial survival was 80.97 +/- 8.8%, patency was 96.12 +/- 2.95%, and the ipsilateral stroke-free rate was 93.12 +/- 4.49%. Treatment of stenotic coiling or kinking of the internal carotid artery yields satisfactory results, comparable to those of endarterectomy, for isolated atherosclerotic carotid stenoses and is effective in the prevention of ipsilateral ischemic stroke.