“ Ethmozin significantly prolonged the AH interval (basal: 75 +/- 8 SE msec; ethmozin: 91 +/- 10 msec, p less than 0.05), the HV interval (51 +/- 3; 66 +/- 5 msec, p less than 0.01), and the QRS duration (101 +/- 4; 118 +/- 4 msec, p less than 0.001).”