“…block (Cookson, 1959;Blizzard and Rupp, 1960;Hoffman and Lowrey, 1960;Rosenblum and Delman, 1963;Lanfranchi and Fauchier, 1973), third degree of a.v. block (Davis and Smith, 1933;Steuer, 1936;Muggia, Stjernholme and Houle, 1970;Stern, Jacobs and Duncan, 1970;Kernoff, Rossouw and Kennelly, 1972), reversible bundle branch block (Digilio, 1938), ventricular ectopic beats (Rohrbach, 1968), ventricular tachycardia (Ernstene, 1938;Fairhurst and Sash, 1959;Lyngborg and Jacobsen, 1972) and ventricular fibrillation (Boone, 1945;Lyngborg and Jacobsen, 1972). These dysrhythmias, although some are rare, have been described in patients of over 40 years of age who also had coronary artery disease, hypertension or acute infections.…”