• World Neurosurg · May 2023

    Review Meta Analysis

    Duret brainstem hemorrhage following trans-tentorial descending brain herniation: a systematic review and meta-analysis.

    • Nathan Beucler, Pierre-Julien Cungi, and Arnaud Dagain.
    • Department of Neurosurgery, Sainte-Anne Military Teaching Hospital, Toulon, France; Ecole du Val-de-Grâce, French Military Health Service Academy, Paris, France. Electronic address: nathan.beucler@neurochirurgie.fr.
    • World Neurosurg. 2023 May 1; 173: 251262.e4251-262.e4.

    BackgroundHistorically, the occurrence of hemorrhage in the brainstem after an episode of supratentorial intracranial hypertension was described by Henri Duret in 1878. Nevertheless, to date the eponym Duret brainstem hemorrhage (DBH) lacks systematic evidence regarding its epidemiology, pathophysiology, clinical and radiologic presentation, and outcome.MethodsWe conducted a systematic literature review and meta-analysis using the Medline database from inception to 2022 looking for English-language articles concerning DBH, in accordance with the PRISMA guidelines.ResultsThe research yielded 28 articles for 32 patients (mean age, 50 years; male/female ratio, 3:1). Of patients, 41% had head trauma causing 63% of subdural hematoma, responsible for coma in 78% and mydriasis in 69%. DBH appeared on the emergency imaging in 41% and on delayed imaging in 56%. DBH was located in the midbrain in 41% of the patients, and in the upper middle pons in 56%. DBH was caused by sudden downward displacement of the upper brainstem secondary to supratentorial intracranial hypertension (91%), intracranial hypotension (6%), or mechanical traction (3%). Such downward displacement caused the rupture of basilar artery perforators. Brainstem focal symptoms (P = 0.003) and decompressive craniectomy (P = 0.164) were potential favorable prognostic factors, whereas an age >50 years showed a trend toward a poor prognosis (P = 0.0731).ConclusionsUnlike its historical description, DBH appears as a focal hematoma in the upper brainstem caused by the rupture of anteromedial basilar artery perforators after sudden downward displacement of the brainstem, regardless of its cause.Copyright © 2023 Elsevier Inc. All rights reserved.

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