The following case is presented, first, to call attention to the syndrome and treatment of paroxysmal tachycardia in young infants and, secondly, because of the remarkably rapid ventricular rate, of 350, which, as far as we are aware, is faster than any previously recorded.
Paroxysmal tachycardia as it appears in young infants has been reviewed in an earlier communication.1 It was shown to have a distinctive clinical syndrome and to respond satisfactorily to digitalis therapy. Also the fact that a series of 9 cases could be collected over a relatively short time suggested that the condition may occur more often than has been recognized. This is borne out by a number of additional cases which have come to our attention since the earlier report. One of these has been published by Hobbs2 and serves to illustrate, as does also the following case, the characteristic features.
REPORT OF A