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Sudden Cardiac Death


 Sudden Cardiac Death

Occurs within one hour of the onset of symptoms.

CAD (most common 80%)

(Icy Idiots Chased Hot Vain Chimps)

  1. Ischemic Heart disease (MI)
  2. Inherited Channelopathies (QT syndrome)
  3. Cardiomyopathies (OH, HCM, Myocarditis)
  4. Heart Failure (EF less than 35%)
  5. Valve disease (Aortic stenosis)
  6. Congenital disease (Tetraology of Fallot)

The proximal cause of SCD in most instances is either ventricular fibrillation (VF) or ventricular tachycardia (VT). However, in a significant minority of cases, asystole or pulseless electrical activity is the initial documented rhythm.


The step to improving outcomes involves the chain of survival:

  1. Immediate recognition of cardiac arrest and activation of the emergency response system.
  2. Early CPR with an emphasis on chest compressions.
  3. Rapid defibrillation.
  4. Effective advanced life support; and
  5. Integrated post-cardiac arrest care.

References:

  1. https://www.ncbi.nlm.nih.gov/books/NBK507854/#:~:text=Sudden%20cardiac%20death%20(SCD)%20is,to%20maintain%20perfusion%20and%20life.
  2. https://www.ahajournals.org/doi/full/10.1161/01.cir.98.21.2334


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