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  • Title: Electrophysiologic testing of bretylium tosylate in sustained ventricular tachycardia.
    Author: Bauernfeind RA, Hoff JV, Swiryn S, Palileo E, Strasberg B, Scagliotti D, Rosen KM.
    Journal: Am Heart J; 1983 Jun; 105(6):973-80. PubMed ID: 6858846.
    Abstract:
    We used programmed ventricular stimulation to test intravenous bretylium tosylate in 10 consecutive patients with inducible sustained ventricular tachycardia (usually refractory to type I antiarrhythmic agents). These 10 patients had previously documented sustained ventricular tachycardia and/or ventricular fibrillation complicating stable heart disease. Following control inductions of sustained ventricular tachycardia, bretylium 10 mg/kg was infused over 30 minutes. Thirty minutes after this infusion, sustained ventricular tachycardia could be induced in 9 of the 10 patients (one of these nine patients also had bretylium-potentiated spontaneous ventricular tachycardia). Tachycardia induced in the nine patients after bretylium was similar to control tachycardia with respect to morphology and cycle length (333 +/- 16 msec after bretylium versus 330 +/- 16 msec during control). However, five of the nine patients tolerated induced tachycardia less well after bretylium (exacerbated hypotension). In one patient, ventricular tachycardia could not be induced after intravenous bretylium.
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