RT Journal
A1 LYON RA, RAUH LW
T1 EXtrasystoles in children
JF American Journal of Diseases of Children
JO American Journal of Diseases of Children
YR 1939
FD February 1
VO 57
IS 2
SP 278
OP 290
DO 10.1001/archpedi.1939.01990020036003
UL http://dx.doi.org/10.1001/archpedi.1939.01990020036003
AB Extrasystoles occur much less frequently in children than in adults, and little is known of their etiology. Since they may be present both in diseased and in apparently normal hearts, it is sometimes difficult to determine the treatment of the patient and the prognosis of the condition. During the past few years we have examined a large number of children, some with cardiac disease and others apparently in normal health. From the data collected we have made an estimation of the frequency of extrasystoles in children. It has also been our purpose to determine as far as possible the predisposing factors and to trace the effect of this cardiac irregularity on the health of the patients.PREVIOUS LITERATURE 
    Visco1 found this irregularity in 48 children of a group of 1,000. Two of these patients, aged 2 and 4 years respectively, were perfectly healthy in all other respects. One child,