The relationship between shocks and survival in out-of-hospital cardiac arrest patients initially found in PEA or asystole

摘要: Summary Objective To describe survival rates from out-of-hospital cardiac arrest for patients who present with pulseless electrical activity or asystole according to whether they remained in a non-shockable rhythm converted ventricular fibrillation and were shocked appropriately. Methods Design: Observational analysis of registry collected as part randomized trial. Setting: Five urban/suburban cities the United States Canada. Participants: Trial subjects (adult, treated, non-traumatic) whose first documented heart rhythm/state following was activity. Intervention: Periodic pauses assess shockable rhythm. Main outcome measure: Survival hospital discharge. Results Of 1377 patients, 738 presented an initial either asystole. 738, 78% (n = 574) subsequently at each evaluation throughout resuscitation (No-Shock group) while 22% (n = 164) by emergency medical service (Shock group). discharge significantly greater No-Shock group (4.9% versus 0.6%, p = 0.01). Shock predictor (odds ratios = 0.18, p = 0.036) death after adjustment potential confounders. Conclusions These results suggest that develop VF during course treatment initially observed do not benefit conventional approaches such defibrillation. Further study is warranted define optimal this patient cohort.