the mean plasma level of procainamide required for 85 % suppression of pvcs in the ami patients was 5.0 +/- 0.5 micrograms/ml , while that required for the cihd patients was 9.3 +/- 0.7 micrograms/ml ( p less than 0.05 ) .
C0033216
procainamide
C0151636
pvcs