Key result
A bifid T wave in leads V2 and V3 was observed in 18.3% of healthy children, peaking at 53% in 5-year-olds, but was absent in healthy adults, indicating it is a normal pediatric variant.
Population
604 consecutive children free from clinically detectable heart disease and 110 consecutive healthy adults.
Design
Cross-sectional
Authors
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Bifid T waves warrant no action in healthy children; confirms normal variant status but leaves open thresholds in symptomatic or diseased cohorts.
Cross-Sectional (n=714)
No
Absolute Event Rate: 18.3% vs 0%
Bifid T waves in leads V2 and V3 are a common normal variant in healthy children, particularly around age 5, and should not be misinterpreted as an ECG abnormality.
Calabró et al. (2009) conducted a cross-sectional in Healthy (n=714). Pediatric age vs. Adults was evaluated on Incidence of bifid T waves. A bifid T wave in leads V2 and V3 was observed in 18.3% of healthy children, peaking at 53% in 5-year-olds, but was absent in healthy adults, indicating it is a normal pediatric variant.
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