Association between stroke occurrence and changes in atmospheric circulation

• Published in: BMC Public Health
• Main Authors: Venclovienė, Jonė, Radišauskas, Ričardas, Krančiukaitė-Butylkinienė, Daina, Tamošiūnas, Abdonas, Vaičiulis, Vidmantas, Rastenytė, Daiva
• Format: Article in Journal/Newspaper
• Language: English
• Published: 2021
• Subjects: Ischaemic stroke; Haemorrhagic stroke; Atmospheric circulation; Arctic oscillation; North Atlantic oscillation; East Atlantic/West Russia indices; El Niño-southern oscillation; Straipsnis Clarivate Analytics Web of Science / Article in Clarivate Analytics Web of Science (S1); Ekologija ir aplinkotyra / Ecology and environmental sciences (N012); Arctic; North Atlantic
• Online Access: https://www.vdu.lt/cris/bitstream/20.500.12259/128762/2/ISSN1471-2458_2021_V_21_1.PG_1-10.pdf; https://hdl.handle.net/20.500.12259/128762; https://doi.org/10.1186/s12889-020-10052-5

Article number: 42 BackgroundThe impact of weather on morbidity from stroke has been analysed in previous studies. As the risk of stroke was mostly associated with changing weather, the changes in the daily stroke occurrence may be associated with changes in atmospheric circulation. The aim of our study was to detect and evaluate the association between daily numbers of ischaemic strokes (ISs) and haemorrhagic strokes (HSs) and the teleconnection pattern.MethodsThe study was performed in Kaunas, Lithuania, from 2000 to 2010. The daily numbers of ISs, subarachnoid haemorrhages (SAHs), and intracerebral haemorrhages (ICHs) were obtained from the Kaunas Stroke Register. We evaluated the association between these types of stroke and the teleconnection pattern by applying Poisson regression and adjusting for the linear trend, month, and other weather variables.ResultsDuring the study period, we analysed 4038 cases (2226 men and 1812 women) of stroke. Of these, 3245 (80.4%) cases were ISs, 533 (13.2%) cases were ICHs, and 260 (6.4%) cases were SAHs. An increased risk of SAH was associated with a change in mean daily atmospheric pressure over 3.9hPa (RR=1.49, 95% CI 1.14-1.96), and a stronger El Nino event had a protective effect against SAHs (RR=0.34, 95% CI 0.16-0.69). The risk of HS was positively associated with East Atlantic/West Russia indices (RR=1.13, 95% CI 1.04-1.23). The risk of IS was negatively associated with the Arctic Oscillation index on the same day and on the previous day (RR=0.97, p<0.033). During November-March, the risk of HS was associated with a positive North Atlantic Oscillation (NAO) (RR=1.29, 95% CI 1.03-1.62), and the risk of IS was negatively associated with the NAO index (RR=0.92, 95% CI 0.85-0.99).[.] Aplinkotyros katedra Lietuvos sveikatos mokslų universitetas. Medicinos akademija Lietuvos sveikatos mokslų universitetas. Medicinos akademija. Kardiologijos institutas Vytauto Didžiojo universitetas