Sudden cardiac death: epidemiology and risk factors
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Published on: February 28, 2025
A Selcuk Adabag1, Russell V Luepker, Véronique L Roger
1Division of Cardiology, Veterans Affairs Medical Center, Minneapolis, MN 55417, USA. adaba001@umn.edu
Insights
Sudden cardiac death (SCD) remains a significant public health concern. While population-level risk markers have improved, identifying individuals at high risk for SCD and guiding therapy like defibrillators is an ongoing challenge.
Area of Science:
- Cardiology
- Public Health
- Epidemiology
Background:
- Sudden cardiac death (SCD) presents a major public health challenge with diverse causes and evolving trends.
- Advances in identifying population-level SCD risk markers have been made.
- Predicting individual high-risk patients for interventions like implantable cardioverter-defibrillators remains difficult.
Purpose of the Study:
- To review the incidence, trends, and triggers of SCD.
- To examine demographic, clinical, and genetic risk factors for SCD.
- To discuss evidence for public-access defibrillators.
Main Methods:
- Literature review of SCD incidence, trends, triggers, and risk factors.
- Analysis of demographic, clinical, and genetic data.
- Evaluation of evidence for public-access defibrillator efficacy.
Main Results:
- SCD has multiple etiologies and risk factors with changing temporal patterns.
- Progress exists in population-level risk stratification for SCD.
- Individualized prediction for interventions like defibrillators is still under development.
Conclusions:
- Understanding SCD requires ongoing research into its complex risk factors.
- Further development of predictive tools is needed for targeted interventions.
- Public-access defibrillators show promise in managing SCD events.
Abstract:
Sudden cardiac death (SCD) is an important public-health problem with multiple etiologies, risk factors, and changing temporal trends. Substantial progress has been made over the past few decades in identifying markers that confer increased SCD risk at the population level. However, the quest for predicting the high-risk individual who could be a candidate for an implantable cardioverter-defibrillator, or other therapy, continues. In this article, we review the incidence, temporal trends, and triggers of SCD, and its demographic, clinical, and genetic risk factors. We also discuss the available evidence supporting the use of public-access defibrillators.
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