• Emergencias · Oct 2015

    [Factors predicting survival of out-of-hospital cardiac arrest managed with semiautomatic external defibrillators in Galicia].

    • Lorena Soto-Araujo, Manuel Costa-Parcero, María Dolores González-González, Luis Sánchez-Santos, José Antonio Iglesias-Vázquez, and Antonio Rodríguez-Núñez.
    • Servicio de Emergencias Médicas, Fundación Pública Urxencias Sanitarias de Galicia-061(FPUSG- 061) Servicio Gallego de Salud, Santiago de Compostela, España.
    • Emergencias. 2015 Oct 1; 27 (5): 307-312.

    ObjectivesTo determine prognostic factors in out-of-hospital cardiac arrests managed with semiautomatic external defibrillators (SAEDs) by emergency health service responders in Galicia, Spain.Material And MethodsRetrospective descriptive study of out-of-hospital cardiac arrests treated with SAEDs over a period of 5 years. We collected Utstein outcome data from the database and analyzed the following variables: sex, age, date and time of cardiac event, rural vs urban setting, type of location, witnessed or not, bystander resuscitation attempts or not, time first heart rhythm was detected, use of orotracheal intubation or not, time of call for help, and time to arrival of emergency responders.ResultsWe analyzed 2005 cases (0.14/1000 person-years; 68.2% male, 70.8% in rural locations, 61% at home). Return of spontaneous circulation (ROSC) was achieved in situ in 10.9% (in 29.9% of patients with shockable rhythms and in 3.3% of those in asystole). Intubation was necessary in 15.7%; ROSC was achieved in 24.8% of the intubated patients. ROSC was achieved in significantly more patients when responders arrived soon after the call for help (mean: 12 minutes, 26 seconds) than when arrival was delayed (mean: 16 minutes, 16 seconds when ROSC was not achieved; P<.001). The presence of a shockable rhythm was also significantly more frequent when response time was faster (P<.001). Asystole, on the other hand, reduced the likelihood of survival (P<.005).ConclusionPrognostic factors related to survival of SAED-managed out-of-hospital cardiac arrest in Galicia were the presence of a shockable rhythm, shorter response time, continuation of basic life support measures including advanced airway management, bystander life-support maneuvers, an urban location, and night timing of the arrest.

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