PROCAINAMIDE HCL 1000MG PFS 5X10ML
Details
Details
DESCRIPTION
Procainamide Hydrochloride Injection, USP, is a sterile, nonpyrogenic solution of procainamide hydrochloride in Water for Injection. It is available in 100 mg per mL concentration. The 100 mg per mL potency contains 0.9% w/v benzyl alcohol and 0.09% sodium bisulfite as preservatives. The solution may contain hydrochloric acid and/or sodium hydroxide for pH adjustment. pH 5.0 (4.0 to 6.0). Headspace nitrogen gassed.
Procainamide hydrochloride, a Group 1A cardiac antiarrhythmic drug, is ρ-amino-N-[2-(diethylamino) ethyl] benzamide mono-hydrochloride. It has the following structural formula:
M.W. 271.79*(locus for acetylation to N-acetyl procainamide).
It differs from procaine which is the p-aminobenzoyl ester of 2-(diethylamino)-ethanol. Procainamide as the free base has a pKa of 9.23; the monohydrochloride is very soluble in water.
INDICATIONS AND USAGE
Procainamide hydrochloride injection is indicated for the treatment of documented ventricular arrhythmias, such as sustained ventricular tachycardia, that, in the judgement of the physician, are life-threatening. Because of the proarrhythmic effects of procainamide, its use with lesser arrhythmias is generally not recommended. Treatment of patients with asymptomatic ventricular premature contractions should be avoided.
Initiation of procainamide treatment, as with other antiarrhythmic agents used to treat life-threatening arrhythmias, should be carried out in the hospital.
Antiarrhythmic drugs have not been shown to enhance survival in patients with ventricular arrhythmias.
Because procainamide has the potential to produce serious hematological disorders (0.5 percent) particularly leukopenia or agranulocytosis (sometimes fatal), its use should be reserved for patients in whom, in the opinion of the physician, the benefits of treatment clearly outweigh the risks. (see WARNINGS and Boxed Warning.)