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Resuscitation time in ventricular fibrillation--a prognostic indicator
Annals of Emergency Medicine
|December 1, 1983
Summary
Resuscitation time significantly impacts survival in prehospital ventricular fibrillation patients. Shorter resuscitation times correlate with better survival outcomes, highlighting its importance in emergency cardiac care.
Area of Science:
- Emergency Medicine
- Cardiology
- Prehospital Care
Background:
- Ventricular fibrillation (VF) is a critical cardiac rhythm requiring immediate intervention.
- Prehospital resuscitation success rates vary, and predictors of survival require further definition.
Purpose of the Study:
- To investigate the relationship between the duration of resuscitation and survival in patients with prehospital ventricular fibrillation.
- To identify resuscitation time as a potential predictor of survival in this patient population.
Main Methods:
- Analysis of 565 successfully resuscitated adult patients with initial ventricular fibrillation from the Milwaukee County Paramedic System (1978-1982).
- Exclusion of pediatric, trauma, poisoning, and drowning cases.
- Correlation of resuscitation time and time to first sustained pulse with survival outcomes.
Main Results:
- Overall survival to discharge was 46% (262/565).
- Survival rates declined sharply up to 20 minutes of resuscitation, then more gradually.
- Mean resuscitation time for survivors (12.6 min) was significantly shorter than for non-survivors (23.9 min) (P < .0001).
- Witnessed arrest and bystander cardiopulmonary resuscitation (CPR) did not significantly alter survival curves.
Conclusions:
- Resuscitation time is a significant, previously undefined predictor of survival in patients with prehospital ventricular fibrillation.
- Optimizing resuscitation duration may improve patient outcomes in emergency cardiac events.