with recovery periods of 10 and 20 min a second episode of ischemia and reperfusion resulted in very few arrhythmias : 0 % vf in both instances , 17 and 8 % vt , and only 4 +/- 3 and 9 +/- 5 pvc , respectively .
C0003811
arrhythmias
C0042510
vf