Emergency Drugs during Cardiac Arrest- “LEAN”

Cardiac Arrest Drugs

Usually, the first sign of sudden cardiac arrest (SCA) is loss of consciousness (fainting). At the same time, no heartbeat (or pulse) can be felt. Some people may have a racing heartbeat or feel dizzy or light-headed just before they faint.

Emergency Drugs during Cardiac Arrest- “LEAN”


  • Lidocaine injection is sometimes used to treat irregular heart rhythms that may signal a possible heart attack.


  • Increases heart contractility, constricts blood vessels and dilates air passages.


  • The action of this drug is to block the effect of the vagus nerve on the heart. This nerve normally slows heart rate and, during cardiac arrest.


  • Used to counteract opiate overdose in opiate drug users.