Cardiac arrest reversible causes

4 H’s and 4 T’s

  • Hypoxia
  • Hypovolaemia
  • Hyper/hypokalaemia and other electrolyte disturbances e.g. magnesium imbalance
  • Hypothermia
  • Tension pneumothorax
  • Tamponade (cardiac)
  • Toxicity and Therapeutics
  • Thrombosis (coronary or pulmonary)
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