eleven healthy volunteers ( mean age 30.1 +/- 4.3 yrs . ) were repeatedly studied by measurement of systolic time intervals ( qs2c , pepc , lvetc , pep/lvet ) and arterial blood pressure ( cuff method ) before and after 24-hour oral application of four antiarrhythmic drugs ( quinidine , disopyramide , prajmaliumbitartrate , propafenone ) and two beta-blocking agents ( propranolol , atenolol ) .
C0034414
quinidine
C0033429
propafenone