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Time difference between pad placement in single versus double external defibrillation: A live patient simulation

Vegard Nordviste1, Marius Rehn1,2,3, Andreas Jørstad Krüger1,4,5

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Summary

Double sequential external defibrillation (DSED) for out-of-hospital cardiac arrest (OHCA) requires slightly more time for pad placement than standard defibrillation. This minimal time increase supports further clinical investigation of DSED as an initial OHCA treatment.

Keywords:
Cardiopulmonary resuscitationDefibrillationDual sequential external defibrillationOut-of-hospital cardiac arrest

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Area of Science:

  • Emergency Medicine
  • Cardiology
  • Clinical Simulation

Background:

  • Out-of-hospital cardiac arrest (OHCA) is a major cause of mortality.
  • Double sequential external defibrillation (DSED) is an alternative treatment, typically for refractory ventricular fibrillation.
  • Early return of spontaneous circulation may be achievable with DSED as initial therapy.

Purpose of the Study:

  • To compare the time required for pad placement in DSED versus standard defibrillation.
  • To evaluate DSED's feasibility as an initial treatment for OHCA.

Main Methods:

  • Observational cohort study utilizing ambulance personnel and live patient models.
  • Two patient categories with different BMIs (20.9 and 32.8) were used.
  • Time for standard and DSED pad placement was recorded for two-member teams.

Main Results:

  • Mean time for standard pad placement: 24.6s (Patient A) and 27.4s (Patient B).
  • Mean time for DSED pad placement: 38.3s (Patient A) and 41.3s (Patient B).
  • The mean difference in time for DSED vs. standard placement was approximately 13.7-13.9s, with no significant difference between patient BMI categories.

Conclusions:

  • The time increase for DSED pad placement is minimal.
  • This finding supports clinical trials exploring DSED as an initial treatment for OHCA.
  • DSED may offer a viable option for improving outcomes in OHCA patients.