Prevalence and Factors Associated With Atrial Fibrillation Among Young Patients With Ischemic Stroke

Area of Science:

• Cardiology
• Neurology
• Epidemiology

Background:

• Atrial fibrillation (AF) is a significant stroke risk factor, particularly in older populations.
• The prevalence and risk factors for AF in young stroke patients (18-49 years) are not well understood.
• This study investigates AF in young individuals experiencing their first ischemic stroke.

Purpose of the Study:

• To determine the prevalence of atrial fibrillation (AF) in young patients diagnosed with a first-ever ischemic stroke.
• To identify factors associated with the presence of AF in this demographic.
• To assess the impact of AF on stroke severity and recurrence in young adults.

Main Methods:

• Analysis of data from the ODYSSEY study, including 1259 patients aged 18-49 with first-ever ischemic stroke.
• Comprehensive cardiac evaluation: ECG, cardiac rhythm monitoring, and echocardiography.
• Statistical analysis to determine associations between AF and clinical factors, stroke severity, and recurrence.

Main Results:

• Overall AF prevalence was 2.5% (1% known, 1.5% newly detected within 24 hours).
• Factors associated with AF included higher NIH Stroke Scale scores and a history of cardiac pathology, notably heart valve abnormalities and hypertension.
• Patients with AF experienced more severe strokes and a higher recurrence rate of vascular events.

Conclusions:

• Around 2.5% of young stroke patients have AF, with half diagnosed during initial monitoring.
• Structural cardiac abnormalities, especially heart valve issues, are strongly linked to AF in young stroke patients.
• AF in young stroke patients is associated with increased stroke severity and a greater risk of recurrent vascular events.