Key result
In children with structurally normal hearts, the frequency of premature ventricular contractions originating from the right ventricular outflow tract increased with age, while those from branch sources decreased with age (P=0.002 for linear trend).
Observational (n=178)
No
p-value: p=0.002
In children with structurally normal hearts, the origin of idiopathic PVCs varies by age, with outflow tract origins increasing and branch origins decreasing as children grow older.
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Age-dependent PVC origins may inform pediatric ECG interpretation; leaves open whether patterns predict arrhythmia risk or outcomes.
Jiang et al. (2017) conducted an observational in Idiopathic premature ventricular contractions (PVCs) (n=178). Age was evaluated on Constituent ratio of PVC types (PVCs-LBBB vs PVCs-RBBB) across different age groups (p=0.002). In children with structurally normal hearts, the frequency of premature ventricular contractions originating from the right ventricular outflow tract increased with age, while those from branch sources decreased with age (P=0.002 for linear trend).
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