Influence of Weather Conditions on the Incidence of SAH

Abstract

Introduction

Subarachnoid hemorrhage (SAH) is a clinical condition in which there is bleeding into the subarachnoid space, and it is known that there are modifiable risk factors, such as high blood pressure and smoking. However, specific meteorological conditions, such as temperature and atmospheric pressure, have also been observed to represent a higher risk for this condition.

Objective

The objective of this systematic review was to synthesize the current literature data on the relationship between meteorological factors and the occurrence of SAH.

Methodology

Following PRISMA guidelines, the review investigated the impact of meteorological conditions on the incidence of subarachnoid hemorrhage, with the guiding question: "What is the relationship between climate variations and SAH cases?" through comprehensive searches in academic sources with studies published between 2013 and 2023 in the PubMed and BVS (Virtual Health Library) databases.

Results

The main variables evaluated were daily average temperature, average atmospheric pressure, relative humidity, wind speed, influenza incidence, solar incidence, partial oxygen pressure, seasonal distribution, and seasons of the year.

Conclusion

The study highlighted the influence of meteorological conditions on the occurrence of subarachnoid hemorrhage (SAH), especially in cases of extreme climate variations and high atmospheric pressure.

Resumo

Introdução

A hemorragia subaracnóidea (HSA) é uma condição clínica em que ocorre sangramento para o espaço subaracnóideo, sabe-se que existem fatores de risco modificáveis, como hipertensão arterial e tabagismo. No entanto, também se observou que condições meteorológicas específicas, como temperatura e pressão atmosférica, representam um risco mais elevado para esta condição.

Objetivo

O objetivo desta revisão sistemática foi sintetizar os dados atuais da literatura sobre a relação entre fatores meteorológicos e a ocorrência de HSA.

Metodologia

Seguindo as diretrizes do PRISMA, a revisão investigou o impacto das condições meteorológicas na incidência de hemorragia subaracnóidea, tendo como questão norteadora: "Qual a relação entre as variações climáticas e os casos de HSA?" por meio de buscas abrangentes em fontes acadêmicas com estudos publicados entre 2013 e 2023 nas bases de dados PubMed e BVS (Biblioteca Virtual em Saúde).

Resultados

As principais variantes avaliadas foram a temperatura média diária, pressão atmosférica média, umidade relativa, velocidade do vento, incidência de influenza, incidência solar, pressão parcial de oxigênio, distribuição sazonal e estações do ano.

Conclusão

O estudo destacou a influência das condições meteorológicas na ocorrência de hemorragia subaracnóidea (HSA), principalmente em casos de variações climáticas extremas e elevada pressão atmosférica.

Keywords

subarachnoid hemorrhage - weather - seasons - climate

Palavras-chave

hemorragia subaracnóidea - tempo - estações do ano - clima

Publication History

Received: 08 April 2024

Accepted: 20 March 2025

Article published online:
16 July 2025

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