RT Journal A1 Rothman IK, Amorosi EL T1 PRocainamide-induced agranulocytosis and thrombocytopenia JF Archives of Internal Medicine JO Archives of Internal Medicine YR 1979 FD February 1 VO 139 IS 2 SP 246 OP 247 DO 10.1001/archinte.1979.03630390096035 UL http://dx.doi.org/10.1001/archinte.1979.03630390096035 AB Procainamide therapy has frequently been reported as a cause of agranulocytosis, but severe thrombocytopenia associated with the use of this drug has been noted only once. We report a case of simultaneously occurring agranulocytosis and profound thrombocytopenia in a patient receiving procainamide hydrochloride. Different mechanisms appeared to be responsible for the two cytopenias.(Arch Intern Med 139:246-247, 1979)