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Table 2 Baseline Conduction Abnormalities Stratified by Age. Frequency of conduction abnormalities stratified by age. Age stratifications based on those used in the NHS study

From: Patients with ACVR1R206H mutations have an increased prevalence of cardiac conduction abnormalities on electrocardiogram in a natural history study of Fibrodysplasia Ossificans Progressiva

NHS baseline data (Criteria: Surawicz et al.)
  % of All ECGs (N = 106) 4–8 yr (n = 18) 9–16 yr (n = 40) 17–24 yr (n = 23) 25–56 yr (n = 25)
Conduction Abnormality 45.3% 72.2% 62.5% 8.7% 32.0%
Intraventricular Conduction Delay 37.7% 72.2% 47.5% 16.7% 24.0%
Right Bundle Branch Block 4.7% 0% 12.5% 0% 0%
Incomplete Right Bundle Branch Block 1.9% 0% 2.5% 0% 4.0%
First Degree AV Block 0.9% 0% 0% 0% 4.0%
  1. IVCD Intraventricular conduction delay, RBBB right bundle branch block, IRBBB Incomplete right bundle branch block