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. 2022 Dec 31;15(1):2139340.
doi: 10.1080/16549716.2022.2139340.

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

Daniel Oudin Åström  1   2 , Henrik Bjursten  3 , Anna Oudin  1   2 , Shahab Nozohoor  3 , Khalil Ahmad  4 , Mariann Tang  4 , Markus Bjurbom  5 , Emma C Hansson  6   7 , Anders Jeppsson  6   7 , Christian Joost Holdflod Møller  8 , Miko Jormalainen  9 , Tatu Juvonen  9   10 , Ari Mennander  11 , Peter S Olsen  12 , Christian Olsson  5 , Anders Ahlsson  5 , Emily Pan  13   14 , Peter Raivio  9 , Anders Wickbom  15 , Johan Sjögren  3 , Arnar Geirsson  16 , Tomas Gudbjartsson  17 , Igor Zindovic  3
Affiliations

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

Daniel Oudin Åström et al. Glob Health Action. .

Abstract

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.

Keywords: Heat; acute type A aortic dissection; cold; muli-centre study; temperature.

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Conflict of interest statement

No potential conflict of interest was reported by the author(s).

Figures

Figure 1.
Figure 1.
Pooled and city-specific estimates of the cumulative relative risks (RR) of ATAAD over 21 lags with 95% confidence intervals (grey area) in relation to daily mean temperature.
See this image and copyright information in PMC

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