Parenchymal "damage" in transient ischemic attacks (TIAs) and prolonged reversible ischemic neurologic deficits (PRINDs):--the role of cranial CT and EEG.
Over a period of 6 years (1985-1990) we reviewed records of patients with one or more TIAs or PRINDs (196 TIAs, 63 PRINDs). 111 patients (42.9%) suffered from TIAs/PRINDs of the anterior circulation. In all cranial CT scanning (CCT) was performed, whereas only in 79 EEG was recorded after recovery from the symptoms. 25 patients (22.5%) out of the 111 showed low density areas of recent onset in CCT made responsible for the attack. Among the EEGs of the 79 patients 35 (44.3%) revealed corresponding electrical abnormalities. Out of the 79 patients investigated by both methods in 14 (17.7%) a lesion was demonstrated in CCT and focal abnormality in EEG. In 11 (13.9%) EEG was normal despite a lesion manifested in CCT. Vice versa 21 patients (26.6%) showed normal CCTs but focal abnormalities in EEG. By far most cases (43%) had normal CCTs and EEGs. These results may contribute to a redefinition of TIA and PRIND as clinically defined syndromes in prae-CT-area.
Taghavy
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Department of Neurology, University of Erlangen, Germany.
Hamer
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H
D000647:Amnesia / Q000209:etiology / Q000503:physiopathology; D001921:Brain / Q000098:blood supply / Q000000981:diagnostic imaging / Q000503:physiopathology*; D001927:Brain Diseases / Q000175:diagnosis / Q000503:physiopathology*; D002339:Carotid Arteries; D002533:Cerebral Angiography; D004569:Electroencephalography; D005260:Female; D006801:Humans; D002546:Ischemic Attack, Transient / Q000150:complications / Q000175:diagnosis / Q000503:physiopathology*; D008875:Middle Aged; D014057:Tomography, X-Ray Computed; D014465:Ultrasonics