title: Agranulocytosis due to new sustained-release procainamide.
mesh_terms: D000284:Administration, Oral; D000368:Aged; D000380:Agranulocytosis / Q000139:chemically induced*; D001145:Arrhythmias, Cardiac / Q000188:drug therapy; D003692:Delayed-Action Preparations; D006801:Humans; D008297:Male; D011342:Procainamide / Q000008:administration & dosage / Q000009:adverse effects* / Q000627:therapeutic use
chemical_list: D003692:Delayed-Action Preparations; D011342:Procainamide