CT and CT-perfusion findings of reversible leukoencephalopathy during triple-H therapy for symptomatic subarachnoid hemorrhage-related vasospasm

Journal of Neuroimaging : Official Journal of the American Society of Neuroimaging
Katja E Wartenberg, Augusto Parra

Abstract

Reversible leukoencephalopathy syndrome (RLS) is an acute neurological syndrome associated with altered mental status and visual disturbances described in patients with sudden elevations in systemic blood pressure and other medical conditions. In this process, neuroimaging studies usually demonstrate diffuse edema involving the subcortical structures of the posterior regions of the brain. Triple H (HHH) therapy is an established treatment for symptomatic vasospasm following subarachnoid hemorrhage (SAH). RLS has not been reported in the scientific literature as a complication of HHH therapy with perfusion computed tomography (CTP) imaging documentation. A 73-year-old woman developed iatrogenic RLS during HHH therapy for SAH-related vasospasm. The computed tomography (CT) revealed bilateral parieto-occipital hypodensities. The CTP study showed increased cerebral blood volume and blood flow as well as decreased mean transit time in both parietal-occipital regions, which is compatible with vasogenic edema. The induction of hypertension as part of HHH therapy for SAH-related cerebral vasospasm may result in RLS. Therefore, it should be considered as a potentially reversible cause in the differential diagnosis of neurological deteri...Continue Reading

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