verapamil converted 29 of 32 episodes of supraventricular tachycardia in 20 patients , 10.9 +/- 7 minutes from the administration of the effective dose , and a mean of 16.8 +/- 20 minutes from the initiation of therapy using a mean of 8.4 +/- 3.4 mg of iv verapamil .
C0039240
supraventricular
C0042523
verapamil