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  • Title: Prospective comparison of intravenous quinidine and intravenous procainamide in patients undergoing electrophysiologic testing.
    Author: Holzberger PT, Greenberg ML, Paicopolis MC, Ozahowski TP, Ho PC, O'Connor GT.
    Journal: Am Heart J; 1998 Jul; 136(1):49-56. PubMed ID: 9665218.
    Abstract:
    BACKGROUND: Intravenous procainamide hydrochloride is frequently used in the acute care setting and during electrophysiologic testing, but intravenous quinidine gluconate is rarely used because of concerns about its safety. This study prospectively compares the hemodynamic and electrophysiologic effects of these agents in patients undergoing electrophysiologic testing. METHODS AND RESULTS: Sixty-five consecutive patients with inducible ventricular tachyarrhythmias were prospectively treated with either intravenous quinidine gluconate or intravenous procainamide hydrochloride in an alternating unblinded fashion. The hemodynamic and electrophysiologic effects of these two drugs were compared. Seven (22%) patients assigned to intravenous quinidine gluconate and eight (24%) patients assigned to intravenous procainamide hydrochloride were rendered noninducible for ventricular tachyarrhythmias. Four (13%) patients assigned to intravenous quinidine gluconate were unable to complete the infusion compared with none (p = 0.05) assigned to intravenous procainamide hydrochloride. Otherwise, the overall hemodynamic and electrophysiologic effects of the two drugs were similar. CONCLUSIONS: Intravenous quinidine gluconate is a reasonable alternative to intravenous procainamide hydrochloride in patients requiring a parenteral type IA antiarrhythmic agent.
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