• Sao Paulo Med J · Nov 2015

    Cohort study on the factors associated with survival post-cardiac arrest.

    • Cássia Regina Vancini-Campanharo, Rodrigo Luiz Vancini, LiraClaudio Andre Barbosa deCAHuman Physiology and Exercise Sector, School of Physical Education, Universidade Federal de Goiás, Goiânia, Goiás, Brazil., Marília dos Santos Andrade, Aécio Flávio Teixeira de Góis, and Álvaro Nagib Atallah.
    • Escola Paulista de Enfermagem, Universidade Federal de São Paulo, São Paulo, São Paulo, Brazil.
    • Sao Paulo Med J. 2015 Nov 1; 133 (6): 495501495-501.

    Context And ObjectiveCardiac arrest is a common occurrence, and even with efficient emergency treatment, it is associated with a poor prognosis. Identification of predictors of survival after cardiopulmonary resuscitation may provide important information for the healthcare team and family. The aim of this study was to identify factors associated with the survival of patients treated for cardiac arrest, after a one-year follow-up period.Design And SettingProspective cohort study conducted in the emergency department of a Brazilian university hospital.MethodsThe inclusion criterion was that the patients presented cardiac arrest that was treated in the emergency department (n = 285). Data were collected using the In-hospital Utstein Style template. Cox regression was used to determine which variables were associated with the survival rate (with 95% significance level).ResultsAfter one year, the survival rate was low. Among the patients treated, 39.6% experienced a return of spontaneous circulation; 18.6% survived for 24 hours and of these, 5.6% were discharged and 4.5% were alive after one year of follow-up. Patients with pulseless electrical activity were half as likely to survive as patients with ventricular fibrillation. For patients with asystole, the survival rate was 3.5 times lower than that of patients with pulseless electrical activity.ConclusionsThe initial cardiac rhythm was the best predictor of patient survival. Compared with ventricular fibrillation, pulseless electrical activity was associated with shorter survival times. In turn, compared with pulseless electrical activity, asystole was associated with an even lower survival rate.

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