Emergency Drugs during Cardiac Arrest- “LEAN”

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.


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