RT Journal A1 McGAFF CJ, COHEN NK, LEIGHT L T1 HEmodynamic effects of isoproterenol in complete heart block JF A.M.A. Archives of Internal Medicine JO A.M.A. Archives of Internal Medicine YR 1959 FD August 1 VO 104 IS 2 SP 242 OP 248 DO 10.1001/archinte.1959.00270080068008 UL http://dx.doi.org/10.1001/archinte.1959.00270080068008 AB The use of isoproterenol in patients with complete heart block has become an important part of the therapeutic armamentarium. Although Kaufman et al.,1 utilizing the ballistocardiograph, have studied the circulatory effects of this drug in normal subjects, there has been only one report concerning the hemodynamic effects of isoproterenol in patients with heart block.2 It was thought that further information concerning the effect of this drug in patients with heart block would be of interest.Methods and Materials  Six patients with complete heart block and one with 2:1 heart block were studied. These patients varied in age from 15 to 77 years, and six were males. The etiology of the heart block was considered congenital in one patient (Patient 1) and obscure in two patients (Patients 2 and 7), and in the remainder the block was thought to be on the basis of arteriosclerotic heart disease (Table 1).