AT THE Children's Free Hospital in Louisville and in the Children's Heart Clinic at the Louisville General Hospital, my associates and I have been particularly interested in the cardiac arrhythmias of infancy and childhood. In January 1946, Scott and I reported 2 cases of paroxysmal tachycardia in infants.1 In November 1946, Prince, Ratondo and Scott2 reported a case of auricular flutter and congenital heart disease, with restoration of normal rhythm by the use of quinidine. A series of cases of persistent extrasystoles in children was also studied.3
The case reported here of recurrent paroxysmal tachycardia in a young infant is unlike any of the cases of this disorder that I have seen described in the literature.
REPORT OF A CASE
Y. M. S., a 12 day old white female infant, was seen at home on Aug. 29, 1945, because of diarrhea, some vomiting, impetigo and fever. The