When should cardiopulmonary resuscitation (CPR) be performed?

Updated: Sep 15, 2020
  • Author: Catharine A Bon, MD; Chief Editor: Kirsten A Bechtel, MD  more...
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Although prompt defibrillation has been shown to improve survival for VF and pulseless VT rhythms, [26] CPR should be started before the rhythm is identified and should be continued while the defibrillator is being applied and charged. Additionally, CPR should be resumed immediately after a defibrillatory shock until a pulsatile state is established. This is supported by studies showing that “preshock pauses” in CPR result in lower rates of defibrillation success and patient recovery. [27]

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