The ALS Algorithm

Author: Gavin Lloyd / Editor: Steve Fordham / Reviewer: Jennifer Lockwood, Sarah Gooding / Code: / Published: 23/12/2022

This session covers the Advanced Life Support (ALS) algorithm (2021), which provides an evidence-based template for your clinical skills.

After completing this session you will be able to:

  • Identify and respond to adult patients with a shockable rhythm
  • Identify and respond to adult patients with a non- shockable rhythm
  • Identify and respond to reversible causes of cardiac arrest
  • Describe the role of the resuscitation team leader


  1. Soar J. (editor). Advanced Life Support 8th Edn. London, The Resuscitation Council (UK), London. 2021.
  2. Dorian P, Cass D, Schwartz B, et al. Amiodarone as compared with lidocaine for shock-resistant ventricular fibrillation. N Engl J Med. 2002 Mar 21;346(12):884-90.
  3. American Society of Anaesthesiologists. Basic standards for pre-anaesthesia care 1999.
  4. American Heart Association, International Liaison Committee on Resuscitation Guidelines 2000. The cardiopulmonary resuscitation and emergency cardiovascular care: the American Heart Association in collaboration with the International Liaison Committee on Resuscitation. Circulation. 2000;102:100-104.
  5. British Thoracic Society guidelines for the management of suspected acute pulmonary embolism. Thorax 2003;58:470-483.

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