propafenone , a new class i antiarrhythmic drug , given as a bolus injection followed by oral medication , or lidocaine were given to 20 consecutive patients admitted with chest pain suggesting acute myocardial infarction and showing high grades , i.e . multiform , pairs or r-on-t premature ventricular complexes or short runs of ventricular tachycardia .
C0023660
lidocaine
C0151636
premature ventricular complexes