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Sudden cardiac death: recognising hidden risk among women versus men
  1. Hanno L Tan1,2,
  2. Carol Ann Remme1
  1. 1Clinical and Experimental Cardiology, Heart Center, Amsterdam UMC Location AMC, Amsterdam Cardiovascular Sciences, Amsterdam, The Netherlands
  2. 2Netherlands Heart Institute, Utrecht, The Netherlands
  1. Correspondence to Dr Carol Ann Remme, Clinical and Experimental Cardiology, Amsterdam UMC Location AMC, Amsterdam, The Netherlands; c.a.remme{at}amsterdamumc.nl

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Despite improvements in prevention and therapy of coronary artery disease, the burden of sudden cardiac death (SCD) remains high, as SCD accounts for up to 20% of all natural deaths in Europe. Hence, there is a continued need for improved strategies to identify those individuals at risk of sudden cardiac arrest (SCA) and SCD. Sudden death is defined as a non-traumatic, unexpected fatal event occurring within 1 hour of onset of symptoms in an apparently healthy subject (or, if unwitnessed, when the victim was in good health 24 hours before the event).1 According to the 2015 European Society of Cardiology guidelines, the term SCD is used either when a potentially fatal cardiac condition was known to be present during life, autopsy revealed a cardiac or vascular anomaly as the probable cause of the event, or no obvious extracardiac causes were identified by postmortem examination.1 Based on various prospective studies, the incidence of SCD is estimated to be around 50–150 per 100 000 person-years,2 but variability between cohorts exists due to differences in available (clinical) information and criteria used. To accommodate these variations, the SCD definition may be refined by subcategorising it into definite, probable or possible SCD depending on a number of criteria, as indicated in figure 1.3 Hence, accurate assessment of SCD incidence not only relies on the availability of autopsy findings and clinical information, but also on the presence of an immediate witness to the SCD event or a ‘remote witness’ (who witnessed the victim <24 hours before the SCD was discovered).

Figure 1

Criteria for subclassification of sudden cardiac death (SCD) into definite, probable and possible. Adapted from Warming et al.3

Significant differences exist between men and women in SCD incidence, underlying cardiac pathology, as well as rhythm disturbances and symptoms preceding SCD,4 indicating …

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Footnotes

  • Twitter @CarolRemme

  • Contributors HLT and CAR both wrote the editorial.

  • Funding HLT has received funding from the European Union’s Horizon 2020 research and innovation programme under ESCAPE-NET, registered under grant agreement number 733381. CAR is supported by Fondation Leducq (17CVD02). HLT and CAR are supported by a grant from the Netherlands CardioVascular Research Initiative (CVON): the Dutch Heart Foundation, Dutch Federation of University Medical Centers, the Netherlands Organisation for Health Research and Development, and the Royal Netherlands Academy of Sciences (CVON-PREDICT2 2018-30).

  • Competing interests None declared.

  • Provenance and peer review Commissioned; externally peer reviewed.

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