Mnemonic for Causes of Pulseless Electrical Activity

Pulseless electrical activity is a very serious medical emergency with very high mortality unless its etiology can be quickly ascertained and corrected. 

A super useful mnemonic to remember the different causes of pulseless electrical activity is:

  • MAD (triple H) CAT

If you are a fan of WWE (well, who isn’t ?) , Triple H, one of the biggest WWE stars, and his “mad cat” will help you remember the etiologic causes of Pulseless Electrical Activity.


  • M: massive pulmonary embolism
  • A: acidosis
  • D: drug overdose
  • H: hypoxia/hypothermia
  • H: hypovolemia
  • H: hypokalemia/hyperkalemia
  • C: cardiac tamponade
  • A: acute myocardial infarction
  • T: tension pneumothorax
Causes of Pulseless Electrical Activity

Hope that mnemonic helped. If you have a better mnemonic for the same, do share in the comments below. Sharing is caring 🙂

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