Many clinical conditions that were considered unusual a generation ago are now known to be relatively common. Thus auricular paroxysmal tachycardia, auricular flutter and auricular fibrillation are being recognized so frequently in adults that observers report the cases in groups of a hundred or more. However, it is doubtful whether the discovery of any of these forms of arrhythmia in an infant will ever be other than rare. A thorough search of the literature has not revealed a report of a case of auricular fibrillation in an infant in the first year of life; the case presented here is therefore the first of its kind to be reported.
REPORT OF CASE
A girl was delivered by cesarean section in the eighth month of gestation because the mother had fibromas. The pregnancy was normal in all other respects, and there was no suggestion of toxemia. At birth the infant had a