Nineteen of thirty-three children (5-to 18-years-old) whose arterial septal heart defects were surgically repaired did not undergo pre-operative cardiac catheterization. (CL)

Laboratory tests including blood count serum electrolyte measures, and electroencephalograms were performed on seven children ages 1 day to 18 years with recurrent attacks of rapid heart action known as idiopathic paroxysmal ventricular tachycardia. (CL)