Risk factors for out-of-hospital cardiac arrest: the Reykjavik Study

Area of Science:

• Cardiology
• Epidemiology
• Preventive Medicine

Background:

• Out-of-hospital cardiac arrest (OHCA) poses a significant public health challenge.
• Identifying modifiable and non-modifiable risk factors is crucial for prevention strategies.
• The Reykjavik Study provides a unique long-term, population-based dataset for examining OHCA determinants.

Purpose of the Study:

• To investigate the risk factors associated with out-of-hospital cardiac arrest (OHCA) within the Reykjavik Study cohort.
• To identify specific determinants of OHCA in both men and women.

Main Methods:

• Prospective, population-based cohort study design.
• Analysis of data from 1987 to 1996, including 8006 men and 9435 women.
• Cox regression analysis to determine significant risk factors for OHCA.

Main Results:

• Coronary artery disease (CAD) and its classical risk factors were significant determinants of OHCA.
• In men, OHCA risk was associated with age, diastolic blood pressure, cholesterol, smoking, and prior MI.
• In women, risk factors included diastolic blood pressure, cholesterol, triglycerides, and increased ECG voltage; increased BMI showed an inverse relationship.

Conclusions:

• Previous myocardial infarction (MI) and traditional coronary artery disease (CAD) risk factors significantly elevate the risk of out-of-hospital cardiac arrest (OHCA).
• Specific risk factor profiles were identified for men and women.
• Increased voltage on electrocardiograms (ECGs) emerged as an additional risk factor for OHCA specifically in women.