Temperature effects on incidence of surgery for acute type A aortic dissection in the Nordics

Daniel Oudin Åström, Henrik Bjursten, Anna Oudin, Shahab Nozohoor, Khalil Ahmad, Mariann Tang, Markus Bjurbom, Emma C Hansson, Anders Jeppsson, Christian Joost Holdflod Møller, Miko Jormalainen, Tatu Juvonen, Ari Mennander, Peter S Olsen, Christian Olsson, Anders Ahlsson, Emily Pan, Peter Raivio, Anders Wickbom, Johan SjögrenArnar Geirsson, Tomas Gudbjartsson, Igor Zindovic*

*Corresponding author for this work


We aimed to investigate a hypothesised association between daily mean temperature and the risk of surgery for acute type A aortic dissection (ATAAD). For the period of 1 January 2005 until 31 December 2019, we collected daily data on mean temperatures and date of 2995 operations for ATAAD at 10 Nordic cities included in the Nordic Consortium for Acute Type A Aortic Dissection (NORCAAD) collaboration. Using a two-stage time-series approach, we investigated the association between hot and cold temperatures relative to the optimal temperature and the rate of ATAAD repair in the selected cities. The relative risks (RRs) of cold temperatures (≤-5°C) and hot temperatures (≥21°C) compared to optimal temperature were 1.47 (95% CI: 0.72-2.99) and 1.43 (95% CI: 0.67-3.08), respectively. In line with previous studies, we observed increased risk at cold and hot temperatures. However, the observed associations were not statistically significant, thus only providing weak evidence of an association.

Original languageEnglish
Article number2139340
JournalGlobal Health Action
Issue number1
Pages (from-to)2139340
Publication statusPublished - 31 Dec 2022


  • Humans
  • Aortic Aneurysm/epidemiology
  • Incidence
  • Temperature
  • Retrospective Studies
  • Risk Factors
  • Acute Disease
  • Treatment Outcome
  • Aneurysm, Dissecting/epidemiology
  • Hot Temperature
  • Cold Temperature


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