Hs and Ts

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The Hs and Ts is a mnemonic used to aid in remembering the possible causes of cardiac arrest.[1] A variety of disease processes can lead to a cardiac arrest; however, they usually boil down to one or more of the "Hs and Ts".[2][3][4]




  1. ^ Resuscitation Council UK (2005). Resuscitation Guidelines 2005 London: Resuscitation Council UK.
  2. ^ ACLS: Principles and Practice. p. 71-87. Dallas: American Heart Association, 2003. ISBN 0-87493-341-2.
  3. ^ ACLS for Experienced Providers. p. 3-5. Dallas: American Heart Association, 2003. ISBN 0-87493-424-9.
  4. ^ "2005 American Heart Association Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care - Part 7.2: Management of Cardiac Arrest." Circulation 2005; 112: IV-58 - IV-66.