RT Journal A1 CHAR F, ADAMS P, Jr., ANDERSON RC T1 ELectrocardiographic findings in one hundred verified cases of ventricular septal defect JF A.M.A. Journal of Diseases of Children JO A.M.A. Journal of Diseases of Children YR 1959 FD January 1 VO 97 IS 1 SP 48 OP 60 DO 10.1001/archpedi.1959.02070010050003 UL http://dx.doi.org/10.1001/archpedi.1959.02070010050003 AB We have reviewed the electrocardiograms of 100 children with isolated ventricular septal defect for (1) possible typical or diagnostic patterns, (2) relationship to pulmonary artery pressure and flow and to histological pulmonary vascular changes, and (3) prognostic significance as to surgical risks.Descriptions regarding the electrocardiogram in patients with ventricular septal defect have been varied. Taussig1 considered the electrocardiogram to be of little diagnostic aid in ventricular septal defects. She noted that bizarre ventricular complexes of high amplitude were often associated with this defect but stated that similar findings occurred with equal frequency in other heart malformations. Others have reported that the electrocardiogram varies with the clinical picture, depending upon the size of the septal defect, location of the defect, and the pulmonary peripheral resistance. Kjellberg et al.,2 in reviewing their 45 cases with this defect, noted that when the pulmonary and systemic arterial pressures were balanced the