“…These have been reported to include sinus tachycardia, bradycardia, asystole, conduction defects and ventricular and supraventricular dysrhythmias (Rasmussen & Kristiansen, 1963;Thorstrand, 1974;1976;Jefferson, 1975;Vohra, Burrows & Sloman, 1975). Tricyclic antidepressants are also known to increase the width of the QRS complex (Thorstrand, 1976;Bigger, Giar-dina, Perel, Kantor & Glassman, 1977) and to lengthen the P-R interval (Burrows, Vohra, Hunt, Sloman, Scoggins & Davies, 1976;Ziegler, Co & Biggs, 1977).…”