Verapamil in cardiac arrhythmias.
D001145:Arrhythmias, Cardiac / Q000139:chemically induced / Q000188:drug therapy; D004071:Digitalis Glycosides / Q000009:adverse effects; D006327:Heart Block / Q000139:chemically induced; D006801:Humans; D008297:Male; D008875:Middle Aged; D014700:Verapamil / Q000009:adverse effects*
D004071:Digitalis Glycosides; D014700:Verapamil