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- W158468537 abstract "Fourteen patients with symptoms of vertebrobasilar insufficiency caused by vertebral artery stenosis in the distal first portion underwent surgical reconstruction. They ranged in age between 42 and 73 years, with a median age of 57 years. Their symptoms included vertigo, dysarthria, syncope, hemiparesis, and homonymous quadrant anopsia. The etiologies of the stenoses involved kinking in 12 cases and mechanical compression due to cervical sympathetic nerve, osteophyte, or fibrous bands in two cases. Digital subtraction angiography revealed that stenosis was maximal at systole and minimal at diastole in six of eight cases. In two of the 14 cases, stenosis was not demonstrated in the neutral position, but stenosis of the left vertebral artery appeared when the head was rotated to the right. Surgical procedures involved 13 decompressions of the vertebral artery and one subclavian artery-vertebral artery bypass using the saphenous vein. Postoperatively, 12 cases of miosis and one of asymptomatic phrenic nerve palsy were observed, but there were no serious complications. All but two patients had complete resolution of their symptoms. Stenosis due to kinking and/or mechanical compression disappeared in all cases after decompression of the vertebral artery. The effects of arterial pulse and neck rotation on vertebral artery stenosis in the distal first portion are discussed." @default.
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- W158468537 date "1989-01-01" @default.
- W158468537 modified "2023-10-17" @default.
- W158468537 title "Extracranial Surgery for Vertebrobasilar Insufficiency" @default.
- W158468537 doi "https://doi.org/10.2176/nmc.29.292" @default.
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