Journal of neurology, neurosurgery, and psychiatry
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J. Neurol. Neurosurg. Psychiatr. · Oct 1998
Transient amnesia after perimesencephalic haemorrhage: the role of enlarged temporal horns.
Although long term outcome of patients with perimesencephalic haemorrhage, a benign subset of subarachnoid haemorrhage, is excellent, some patients report an episode of amnesia for the first hours to days after the ictus. The relation between the occurrence of amnesia and the size of the ventricles on CT, including the temporal horns, were studied in patients with perimesencephalic haemorrhage. ⋯ About one third of patients with perimesencephalic haemorrhage have an episode of amnesia shortly after the bleed. The occurrence of amnesia is associated with enlargement of the temporal horns, and might be explained by temporary hippocampal dysfunction.