Key result
In a 42-year-old woman with combined sinus and atrioventricular nodal re-entrant tachycardia, verapamil effectively prevented the induction of both types of tachycardia.
Case Report (n=1)
Verapamil successfully suppressed the induction of both sinus and atrioventricular nodal re-entrant tachycardias in a patient with combined arrhythmias.
May inform rare combined tachycardia cases; leaves open need for prospective validation before practice change.
A case of a 42-year-old woman who had combined sinus and atrioventricular nodal tachycardia is reported. Programmed atrial stimulation study showed the induction of the two types of paroxysmal supraventricular tachycardia. The mechanisms of these supraventricular tachycardias were both sinus nodal and atrioventricular re-entrant tachycardia. Sinus nodal re-entrant tachycardia could be induced only after injection of atropine. The tachycardias could no longer be induced after the administration of verapamil.
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Hayano et al. (1993) conducted a case report in Sinus and Atrioventricular Nodal Re-Entrant Tachycardia (n=1). Verapamil was evaluated on Induction of tachycardia. In a 42-year-old woman with combined sinus and atrioventricular nodal re-entrant tachycardia, verapamil effectively prevented the induction of both types of tachycardia.
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