University of Oulu

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 Sjögren, Arnar Geirsson, Tomas Gudbjartsson & Igor Zindovic (2022) Temperature effects on incidence of surgery for acute type A aortic dissection in the Nordics, Global Health Action, 15:1, DOI:

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

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Author: Åström, Daniel Oudin1,2; Bjursten, Henrik3; Oudin, Anna1,2;
Organizations: 1Division of Sustainable Health, Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
2Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden
3Department of Cardiothoracic Surgery, Skåne University Hospital, Lund University, Lund, Sweden
4Department of Cardiothoracic and Vascular Surgery, Aarhus University Hospital, Aarhus, Denmark
5Department of Thoracic and Cardiovascular Surgery, Karolinska University Hospital, Stockholm, Sweden
6Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
7Department of Cardiothoracic Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden
8Department of Cardiothoracic Surgery, The Heart Centre, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
9Heart and Lung Center, Helsinki University Hospital, Helsinki, Finland
10Research Unit of Surgery, Anesthesia, and Critical Care, University of Oulu, Oulu, Finland
11Heart Centre, Tampere University Hospital and University of Tampere, Tampere, Finland
12Department of Cardiothoracic Surgery, Centre for Cardiac, Vascular, Pulmonary and Infectious Diseases. Rigshospitalet, Copenhagen, Denmark
13Heart Center, Turku University Hospital, Turku, Finland
14Cardiovascular Medicine Division, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA, USA
15Department of Cardiothoracic and Vascular Surgery, Orebro University Hospital, Orebro, Sweden
16Division of Cardiac Surgery, Yale University School of Medicine, New Haven, CT, USA
17Department of Cardiothoracic Surgery, Landspitali University Hospital and Faculty of Medicine, University of Iceland, Reykjavik, Iceland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 1.4 MB)
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Language: English
Published: Informa, 2022
Publish Date: 2023-06-29


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.

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Series: Global health action
ISSN: 1654-9716
ISSN-E: 1654-9880
ISSN-L: 1654-9716
Volume: 15
Issue: 1
Article number: 2139340
DOI: 10.1080/16549716.2022.2139340
Type of Publication: A1 Journal article – refereed
Field of Science: 3126 Surgery, anesthesiology, intensive care, radiology
Funding: This research was funded by The Agreement for Medical Education and Research, Sweden.
Copyright information: © 2022 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.