• World Neurosurg · Sep 2024

    Trends in hospitalisation and mortality rates associated with subarachnoid haemorrhage and unruptured cerebral aneurysms in Brazil.

    • Gianfelipe Belini Poliseli, Thiago Araújo Dos Santos, Hélio Rubens de Carvalho Nunes, Cassiano Victória, Marco Antônio Zanini, and Pedro Tadao Hamamoto Filho.
    • UNESP - São Paulo State University, Botucatu, Brazil.
    • World Neurosurg. 2024 Sep 3.

    Spontaneous subarachnoid haemorrhage (SAH) and unruptured intracranial aneurysm (UIA) epidemiology is valuable for determining neurosurgical and general healthcare effectiveness· There is an information gap regarding these conditions in middle- and low-income countries· Therefore, we aimed to investigate their hospitalisation and mortality rates in Brazil from 2011-2019· MethodsThis observational, population-based study used hospital admission and mortality data and included all SAH- and UIA-related public hospitalisations and deaths occurring from 2011-2019· Data were obtained from the Ministry of Health's National Hospitalisation and Mortality Information Systems· Population data were obtained from the Brazilian Institute of Geography and Statistics· Simple linear regression models with normal responses were adjusted to explain the temporal evolution of variables· Joinpoint regression models were adjusted to detect moments of significant change in variable behaviour· Graduated choropleth maps were generated using georeferencing and geospatial analyses· ResultsThe annual SAH hospitalisation and mortality coefficients were 4·81 and 2·49/100,000 persons, respectively· The unruptured intracranial aneurysm hospitalisation and mortality coefficients were 1·21 and 0·24/100,000 persons, respectively· In addition to regional differences, we found a stable SAH hospitalisation trend and an increasing mortality rate of 0·062 cases/100,000 inhabitants annually· The UIA hospitalisation rate increased by 0·074 cases/100,000 inhabitants annually and mortality decreased by 0·07 deaths/100,000 inhabitants annually· ConclusionIn Brazil, the SAH hospitalisation trend is stable, while there is a worrisome increasing SAH-related mortality trend· A better scenario was observed for an UIA, with an increase in hospitalisations and decrease in mortality·.Copyright © 2024 Elsevier Inc. All rights reserved.

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