Open AccessDistribution of Carotid Arterial Lesions in Chinese Patients With Transient Monocular Blindness
Author(s) -
HungYi Hsu,
Fu-Yi Yang,
A-Ching Chao,
YenYu Chen,
ChihPing Chung,
WenYung Sheng,
HanHwa Hu
Publication year - 2006
Publication title -
stroke
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.397
H-Index - 319
eISSN - 1524-4628
pISSN - 0039-2499
DOI - 10.1161/01.str.0000198809.76702.43
Subject(s) - medicine , stenosis , radiology , cardiology , angiography , carotid ultrasonography , magnetic resonance imaging , magnetic resonance angiography , stroke (engine) , carotid arteries , mechanical engineering , engineering
Background and Purpose— Asian patients with cerebrovascular diseases have more intracranial atherosclerosis and less extracranial carotid artery stenosis compared with white patients. We systemically evaluated the distribution of carotid arterial lesions in Chinese patients with transient monocular blindness (TMB), which was rarely reported.Methods— We prospectively evaluated 105 consecutive patients with TMB. All of the patients received ocular and physical examinations, blood tests for coagulation function and autoimmune diseases, and ultrasonography of cervical and intracranial arteries. All of the carotid lesions were confirmed by magnetic resonance angiography or cerebral angiography.Results— Of the 36 (34.3%) patients with significant carotid stenosis (≥50%), 16 (15.2%) had extracranial carotid stenosis; 17 (16.2%) had carotid siphon stenosis; and 3 (2.9%) had both. The duration, onset, and patterns of visual loss were not different between patients with and without carotid arterial lesion.Conclusions— This study signified the importance of carotid siphon stenosis as a probable underlying etiology for TMB in Chinese patients.