The effect of time to defibrillation and targeted temperature management on functional survival after out-of-hospital cardiac arrest

作者：Drennan Ian R^*; Lin Steve; Thorpe Kevin E; Morrison Laurie J

来源：Resuscitation, 2014, 85(11): 1623-1628.

DOI：10.1016/j.resuscitation.2014.07.010

• Targeted temperature management
• Out-of-hospital cardiac arrest
• Post-cardiac arrest care
• Neurological outcome

Background: Cardiac arrest physiology has been proposed to occur in three distinct phases: electrical, circulatory and metabolic. There is limited research evaluating the relationship of the 3-phase model of cardiac arrest to functional survival at hospital discharge. Furthermore, the effect of post-cardiac arrest targeted temperature management (TTM) on functional survival during each phase is unknown.
Objective: To determine the effect of TTM on the relationship between the time of initial defibrillation during each phase of cardiac arrest and functional survival at hospital discharge.
Methods: This was a retrospective observational study of consecutive adult (>= 18 years) out-of-hospital cardiac arrest (OHCA) patients with initial shockable rhythms. Included patients obtained a return of spontaneous circulation (ROSC) and were eligible for TTM. Multivariable logistic regression was used to determine predictors of functional survival at hospital discharge.
Results: There were 20,165 OHCA treated by EMS and 871 patients were eligible for TTM. Of these patients, 622 (71.4%) survived to hospital discharge and 487 (55.9%) had good functional survival. Good functional survival was associated with younger age (OR 0.94; 95% CI 0.93-0.95), shorter times from collapse to initial defibrillation (OR 0.73; 95% CI 0.65-0.82), and use of post-cardiac arrest TTM (OR 1.49; 95% CI 1.07-2.30). Functional survival decreased during each phase of the model (65.3% vs. 61.7% vs. 50.2%, P < 0.001).
Conclusion: Functional survival at hospital discharge was associated with shorter times to initial defibrillation and was decreased during each successive phase of the 3-phase model. Post-cardiac arrest TTM was associated with improved functional survival.

• 出版日期2014-11
• 单位河北医科大学