Echocardiographic Risk Assessment to Guide Screening for Atrial Fibrillation

Area of Science:

• Cardiology
• Medical Imaging
• Preventive Medicine

Background:

• Atrial fibrillation (AF) poses a significant health burden and is a preventable cause of stroke.
• Current AF screening strategies are debated.
• Echocardiography is frequently used in clinical practice.

Purpose of the Study:

• To determine if echocardiography can identify patients at risk for developing AF.
• To investigate the utility of left ventricular (LV) and left atrial (LA) parameters in predicting incident AF.

Main Methods:

• A cohort of 445 asymptomatic individuals aged 65 years or older with at least one AF risk factor underwent echocardiography.
• Measurements included LV global longitudinal strain (GLS), LAVi, LA strain, and LV mass.
• Participants were followed for a median of 15 months for incident AF diagnosis.

Main Results:

• AF was diagnosed in 10% of participants.
• Higher AF incidence was observed in patients with LV hypertrophy, GLS < 16%, LAVi > 34 mL/m², and LA reservoir strain < 34%.
• GLS and LAVi were independent predictors of AF, with specific cut-points indicating increased risk.

Conclusions:

• Echocardiography-derived LV and LA measurements can effectively identify individuals at higher risk for AF.
• These simple echocardiographic parameters can augment existing AF screening protocols.
• Integrating echocardiography into AF risk assessment may improve early detection and prevention strategies.