the mean cycle length of the supraventricular tachycardia ( svt ) increased from 338 +/- 60 ms to 387 +/- 56 ms ( p less than 0.05 ) after i.v . application , and from 336 +/- 65 ms to 367 +/- 65 ms ( p less than 0.05 ) during oral propafenone .
C0039240
supraventricular tachycardia
C0033429
propafenone