Aug 6, 2008

Subsequent ventricular fibrillation and survival in out-of-hospital cardiac arrests presenting with PEA or asystole

Resuscitation
Kentaro KajinoHisashi Sugimoto

Abstract

The prognostic implications of conversion to ventricular fibrillation (VF) in out-of-hospital cardiac arrest (OHCA) patients with an initial non-shockable rhythm are unclear. Among OHCA patients with an initial non-shockable rhythm, survival is better in individuals who subsequently develop VF and are defibrillated. Utstein style population-based cohort study. adults (age>or=18 years) with OHCA of presumed cardiac etiology and initial rhythm of pulseless electrical activity (PEA) or asystole treated by emergency medical services systems in Osaka, Japan from January 1, 2001 to December 31, 2005. Primary outcome measure was one-month neurologically favorable survival (CPC<or=2). Outcome of patients with subsequent VF (SHOCK group) was compared to that of patients with sustained non-shockable rhythm (NON-SHOCK group) using logistic regression to adjust for potential confounding variables. Of 14,316 OHCA, 12,353 cases had PEA or asystole as the initial rhythm. Of these, 11,766 (95%) remained in a non-shockable rhythm throughout the resuscitation effort while 587 (5%) subsequently developed VF and were defibrillated. Neurologically favorable survival at one month was significantly better in the SHOCK group (6% versus 1%, p<0.001). S...Continue Reading

  • References12
  • Citations22

References

  • References12
  • Citations22

Citations

Mentioned in this Paper

Ventricular Fibrillation
Emergency Care
Complex (molecular entity)
Logistic Regression
Endolymphatic Sac Tumor
Electroversion Therapy
Pulse Taking
Outpatients
Confounding Factors (Epidemiology)
EMS System

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