Distinctive ECG patterns in healthy black adults

Area of Science:

• Cardiology
• Electrocardiography
• Population Health

Background:

• Electrocardiograms (ECGs) reveal distinct patterns that vary across different populations.
• Certain ECG findings are more prevalent in healthy Black adults compared to White adults.
• These prevalent ECG patterns can be mistaken for signs of serious cardiac disease.

Purpose of the Study:

• To identify and describe six specific ECG patterns frequently observed in healthy Black adults.
• To differentiate benign ECG variations from potentially pathological findings.
• To inform clinicians about these patterns to prevent misdiagnosis and unnecessary interventions.

Main Methods:

• Analysis of ECG data from a cohort of healthy Black and White adults.
• Comparison of the prevalence of specific ECG patterns between the two groups.
• Review of existing literature on ECG interpretation and population-specific variations.

Main Results:

• Six ECG patterns, including higher QRS voltage, anterior ST-segment elevation, early repolarization, persistent juvenile T-wave inversion, anterior T-wave inversion with J-point elevation, and lateral T-wave inversion, were found more frequently in Black adults.
• While some patterns (e.g., LVH criteria, benign anterior STE, ER, juvenile TWI, anterior TWI with J-point elevation in athletes) are generally benign in Black individuals, lateral TWI requires further investigation.
• These patterns can mimic serious conditions like ST-elevation myocardial infarction (STEMI), arrhythmogenic right ventricular cardiomyopathy (ARVC), and hypertrophic cardiomyopathy.

Conclusions:

• Increased awareness of these common ECG patterns in Black adults is crucial for accurate diagnosis.
• Distinguishing these benign variations from pathological findings can prevent unnecessary medical interventions.
• Further research may be needed to fully understand the clinical significance and risk stratification of certain ECG patterns in diverse populations.