Accelerated idioventricular rhythm was observed in three newborn infan
ts with congenital heart disease. This ventricular arrythmia in all of
our patients did not alter the clinical features of the congenital he
art disease, and it disappeared at the ages of 84 days, 40 days, and 4
5 days, respectively. This arrhythmia is generally considered to be be
nign, which also appears to be the case with the newborn infant with c
ongenital heart disease.