Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2022 Nov 29;12(1):20552.
doi: 10.1038/s41598-022-25076-7.

Impact of national holidays and weekends on incidence of acute type A aortic dissection repair

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

Impact of national holidays and weekends on incidence of acute type A aortic dissection repair

Anna Oudin et al. Sci Rep. .

Abstract

Previous studies have demonstrated that environmental and temporal factors may affect the incidence of acute type A aortic dissection (ATAAD). Here, we aimed to investigate the hypothesis that national holidays and weekends influence the incidence of surgery for ATAAD. For the period 1st of January 2005 until 31st of December 2019, we investigated a hypothesised effect of (country-specific) national holidays and weekends on the frequency of 2995 surgical repairs for ATAAD at 10 Nordic cities included in the Nordic Consortium for Acute Type A Aortic Dissection (NORCAAD) collaboration. Compared to other days, the number of ATAAD repairs were 29% (RR 0.71; 95% CI 0.54-0.94) lower on national holidays and 26% (RR 0.74; 95% CI 0.68-0.82) lower on weekends. As day of week patterns of symptom duration were assessed and the primary analyses were adjusted for period of year, our findings suggest that the reduced surgical incidence on national holidays and weekends does not seem to correspond to seasonal effects or surgery being delayed and performed on regular working days.

PubMed Disclaimer

Conflict of interest statement

The authors declare no competing interests.

Figures

Figure 1
Figure 1
Forest plot illustrating the relative risk of surgery for ATAAD on national holidays (NH) (a) and weekends (w-end) and weekdays (w-days) (b) presented per country and pooled.
Figure 2
Figure 2
Median time between symptom onset and surgery on the different days of the week.
See this image and copyright information in PMC

References

    1. Mohammad MA, Karlsson S, Haddad J, Cederberg B, Jernberg T, Lindahl B, et al. Christmas, national holidays, sport events, and time factors as triggers of acute myocardial infarction: SWEDEHEART observational study 1998–2013. BMJ. 2018;363:k4811. doi: 10.1136/bmj.k4811. - DOI - PMC - PubMed
    1. Lennon M, Neuen D, Godwin M. No ‘Christmas holiday effect’in Australia for cardiovascular and stroke mortality. Public Health. 2020;182:190–192. doi: 10.1016/j.puhe.2020.03.004. - DOI - PubMed
    1. Mehta RH, Manfredini R, Hassan F, Sechtem U, Bossone E, Oh JK, et al. Chronobiological patterns of acute aortic dissection. Circulation. 2002;106(9):1110–1115. doi: 10.1161/01.CIR.0000027568.39540.4B. - DOI - PubMed
    1. Sumiyoshi M, Kojima S, Arima M, Suwa S, Nakazato Y, Sakurai H, et al. Circadian, weekly, and seasonal variation at the onset of acute aortic dissection. Am. J. Cardiol. 2002;89(5):619–623. doi: 10.1016/S0002-9149(01)02311-6. - DOI - PubMed
    1. Zhang L, Qiu J, Yang X, Wang D, Yu C. Circadian variations in the onset of aortic dissection in northern China. Chronobiol. Int. 2018;35(11):1481–1489. doi: 10.1080/07420528.2018.1490744. - DOI - PubMed

Publication types