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Refractory Ventricular Fibrillation Treated with Double Simultaneous Defibrillation: Pilot Study.

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Double simultaneous defibrillation (DSiD) significantly improved survival to hospital admission for refractory shockable rhythms. While DSiD showed a trend toward increased survival to discharge, it did not improve long-term neurological outcomes.

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Area of Science:

  • Cardiology
  • Emergency Medicine
  • Critical Care Medicine

Background:

  • Refractory shockable rhythms are associated with high mortality and poor neurological outcomes.
  • Current treatments for refractory shockable rhythms post-defibrillation and medical management are not definitively established.
  • Investigating novel defibrillation strategies is crucial for improving patient survival and outcomes.

Purpose of the Study:

  • To evaluate the efficacy of double simultaneous defibrillation (DSiD) in patients with refractory shockable rhythms.
  • To compare DSiD with conventional defibrillation in terms of survival and neurological outcomes.
  • To determine if DSiD can improve outcomes in a critical patient population.

Main Methods:

  • Retrospective pilot study analyzing medical records from 2016-2017.
  • Comparison of conventional defibrillation (single defibrillator) versus DSiD (two defibrillators).
  • Primary outcome: survival to hospital discharge. Secondary outcomes: survival to admission and 12-month neurological outcome.

Main Results:

  • DSiD group showed significantly higher survival to hospital admission (82.4% vs. 28.6%, p=0.001).
  • A trend towards higher survival to discharge was observed in the DSiD group (41.2% vs. 14.3%, p=0.078).
  • No statistically significant difference in good neurological outcome at 12 months between groups (29.4% vs. 9.5%, p=0.207).

Conclusions:

  • DSiD significantly increases survival to hospital admission in patients with refractory shockable rhythms.
  • DSiD demonstrates a trend towards improved survival to hospital discharge.
  • DSiD did not significantly improve neurological outcomes at 12 months in this patient cohort.