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Lars Koch Hansen1, Anna Mohammed, Magnus Pedersen

  • 1aDepartment of Gastroenterology and Hepatology, Vejle Hospital, a part of Lillebaelt Hospital, Vejle bDepartment of Pulmonary diseases, Bispebjerg Hospital, Copenhagen cCentre of Cancer Immunotherapy, Herlev Hospital, Herlev dDepartment of Emergency Medicine, Hospital of South-West Jutland, Esbjerg Departments of eEndocrinology fGastroenterology and Hepatology gCardiology hClinical Chemistry and Pharmacology iEmergency Medicine, Odense University Hospital jDepartment of Clinical Pharmacology, Institute of Public Health, University of Southern Denmark, Odense, Denmark.

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Charging the defibrillator before rhythm analysis significantly reduces hands-off time during cardiopulmonary resuscitation (CPR). This modified algorithm, Stop-Only-While-Shocking (SOWS), improves CPR efficiency in cardiac arrest scenarios.

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Area of Science:

  • Emergency Medicine
  • Cardiology
  • Resuscitation Science

Background:

  • Minimizing hands-off time during cardiopulmonary resuscitation (CPR) is critical for maintaining organ perfusion and improving survival rates after cardiac arrest.
  • Current European Resuscitation Council (ERC) 2010 guidelines involve specific steps that may prolong interruptions in chest compressions.

Purpose of the Study:

  • To evaluate whether charging the defibrillator prior to rhythm analysis and shock delivery, using the Stop-Only-While-Shocking (SOWS) algorithm, can significantly reduce hands-off time compared to the standard ERC 2010 algorithm.
  • To assess the impact of this modification in simulated full-scale cardiac arrest scenarios.

Main Methods:

  • A randomized simulation study involving 29 physicians was conducted using full-scale cardiac arrest scenarios with drug administration.
  • Participants were assigned to either the Stop-Only-While-Shocking (SOWS) algorithm or the European Resuscitation Council (ERC) 2010 algorithm.
  • Chest compressions were interrupted only for post-charging rhythm analysis and shock delivery in the SOWS group. A manikin recorded CPR data.

Main Results:

  • The SOWS algorithm resulted in a significant 17% reduction in hands-off time compared to the ERC 2010 algorithm.
  • Hands-off time was 22.1% (SD 2.3) with SOWS versus 26.6% (SD 4.8) with ERC 2010 (P<0.05).
  • This finding was consistent across multiple simulated cardiac arrest scenarios.

Conclusions:

  • A simple modification of charging the defibrillator before rhythm analysis significantly reduces hands-off time during CPR in simulated cardiac arrest.
  • The Stop-Only-While-Shocking (SOWS) approach offers a more efficient CPR strategy compared to current ERC 2010 guidelines.
  • This optimized CPR technique holds potential for improving patient outcomes in real-world cardiac arrest situations.