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목적 : To evaluate the co-occurrence of acute ischemic stroke and acute retinal artery occlusion (RAO)
방법 : We retrospectively included 33 consecutive patients with acute RAO who underwent diffusion-weighted magnetic resonance imaging within seven days of the onset of visual symptoms. The etiologies of RAO were classified according to the Trial of Org 10172 in Acute Stroke Treatment (TOAST) criteria, which are based on clinical features and the results of etiological evaluations for atherosclerosis, cardioembolism, and other prothrombotic conditions. We evaluated the prevalence of accompanying acute ischemic stroke in subjects with acute RAO and examined the relationships with etiological parameters
결과 : Acute ischemic stroke was detected in eight (24.2%) subjects with RAO. Among these subjects, three (37.5%) patients did not exhibit any neurological symptoms or signs. Most of the infarction patterns were small, multiple, and scattered. All of the RAO subjects who were positive for lesions on diffusion-weighted imaging had identifiable etiologies, whereas only 36% of the subjects who were negative for lesions had identifiable etiologies (P = 0.003). Carotid stenosis or cardioembolic sources were found more frequently in cases of CRAO (7/18, 38.9%) than in cases of BRAO (1/15, 6.7%, P = 0.046)
결론 : Acute cerebral infarctions frequently accompany RAO. The underlying etiologies are identifiable significantly more frequently in the subjects with concomitant cerebral infarction on diffusion-weighted images than in those without lesions. We recommend obtaining diffusion-weighted imaging for patients with acute RAO.
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