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Ann Neurol. 1980 Mar;7(3):281-85.

Transient global amnesia.


Transient global amnesia (TGA) was found in 41 of 76 patients admitted to the North Carolina Baptist Hospital with temporary disturbances of memory. Risk factors for stroke were present in 26 (63%) of these 41 patients, and additional risk factors developed in 9 (27%) of the 33 patients available for follow-up. Follow-up evaluation in 33 patients (80%) for periods ranging from 1 to 17 years (mean, 60.3 months) revealed a low rate of recurrence (18%) and a still lower rate of progression to stroke (6%). No transient ischemic attacks were reported during this period. In 2 patients, multiple recurrences of TGA ceased after treatment of the underlying condition (polycythemia in 1 case and myxomatous degeneration of the mitral valve in the other.

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