Supervivencia y estado neurológico tras muerte súbita cardiaca extrahospitalaria. Resultados del Registro Andaluz de Parada Cardiorrespiratoria Extrahospitalaria / Survival and neurologic outcome after out-of-hospital cardiac arrest. Results of the andalusian out-of-hospital cardiopulmonary arrest registry

Introducción y objetivos: No hay demasiados datos sobre la muerte súbita prehospitalaria en España. El objetivo es describir su incidencia, las características de los pacientes y los resultados de su atención por un servicio de emergencias extrahospitalario. Métodos: Análisis retrospectivo de un registro prospectivo de parada cardiorrespiratoria atendida por un servicio de emergencias extrahospitalario entre enero de 2008 y diciembre de 2012. Se incluyó a todos los pacientes con estimación de etiología cardiaca como causa de la parada. Se realizó análisis descriptivo de las características generales de los pacientes y de los factores asociados con alta hospitalaria con buen estado neurológico. Resultados: Se incluyó a 4.072 pacientes, con una incidencia estimada de 14,6 eventos por 100.000 habitantes y año, el 72,6% varones. La media de edad era 62,0 ± 15,8 años. El 58,6% de los casos ocurrieron en domicilio. El 25% de los pacientes tenían un ritmo inicial desfibrilable. El 28,8% de los pacientes llegaron con pulso al hospital, el 58,3% del grupo con ritmo desfibrilable. El 10,2% recibió el alta en buen estado neurológico. Las variables asociadas con esta recuperación fueron: parada presenciada (p = 0,04), parada presenciada por el equipo de emergencias (p = 0,005), realización previa de soporte vital (p = 0,04), ritmo inicial desfibrilable (p = 0,0001) y realización de intervencionismo coronario (p = 0,0001). Conclusiones: Más de la mitad de los casos de muerte súbita ocurren en el domicilio. Afectan a una población relativamente joven. Aunque 1 de cada 10 pacientes tuvo una recuperación satisfactoria, la fase previa a la llegada de los equipos de emergencias debe mejorar. El intervencionismo coronario tuvo gran impacto en el pronóstico de los pacientes (AU)

Introduction and objectives: There is a paucity of data on prehospital cardiac arrest in Spain. Our aim was to describe the incidence, patient characteristics, and outcomes of out-of-hospital emergency care for this event. Methods: We conducted a retrospective analysis of a prospective registry of cardiopulmonary arrest handled by an out-of-hospital emergency service between January 2008 and December 2012. The registry included all patients considered to have a cardiac etiology as the cause of arrest, with a descriptive analysis performed of general patient characteristics and factors associated with good neurologic outcome at hospital discharge. Results: A total of 4072 patients were included, with an estimated incidence of 14.6 events per 100 000 inhabitants and year; 72.6% were men. The mean age was 62.0 ± 15.8 years, 58.6% of cases occurred in the home, 25% of patients had initial defibrillable rhythm, 28.8% of patients arrived with a pulse at the hospital (58.3% of the group with defibrillable rhythm), and 10.2% were discharged with good neurologic outcome. The variables associated with this recovery were: witnessed arrest (P = .04), arrest witnessed by emergency team (P = .005), previous life support (P = .04), initial defibrillable rhythm (P = .0001), and performance of a coronary interventional procedure (P = .0001). Conclusions: More than half the cases of sudden cardiac arrest occur at home, and the population was found to be relatively young. Although recovery was satisfactory in 1 out of every 10 patients, there is a need for improvement in the phase prior to emergency team arrival. Coronary interventional procedures had an impact on patient prognosis (AU)

Survival and Neurologic Outcome After Out-of-hospital Cardiac Arrest. Results of the Andalusian Out-of-hospital Cardiopulmonary Arrest Registry.

INTRODUCTION AND OBJECTIVES: There is a paucity of data on prehospital cardiac arrest in Spain. Our aim was to describe the incidence, patient characteristics, and outcomes of out-of-hospital emergency care for this event. METHODS: We conducted a retrospective analysis of a prospective registry of cardiopulmonary arrest handled by an out-of-hospital emergency service between January 2008 and December 2012. The registry included all patients considered to have a cardiac etiology as the cause of arrest, with a descriptive analysis performed of general patient characteristics and factors associated with good neurologic outcome at hospital discharge. RESULTS: A total of 4072 patients were included, with an estimated incidence of 14.6 events per 100000 inhabitants and year; 72.6% were men. The mean age was 62.0 ± 15.8 years, 58.6% of cases occurred in the home, 25% of patients had initial defibrillable rhythm, 28.8% of patients arrived with a pulse at the hospital (58.3% of the group with defibrillable rhythm), and 10.2% were discharged with good neurologic outcome. The variables associated with this recovery were: witnessed arrest (P=.04), arrest witnessed by emergency team (P=.005), previous life support (P=.04), initial defibrillable rhythm (P=.0001), and performance of a coronary interventional procedure (P=.0001). CONCLUSIONS: More than half the cases of sudden cardiac arrest occur at home, and the population was found to be relatively young. Although recovery was satisfactory in 1 out of every 10 patients, there is a need for improvement in the phase prior to emergency team arrival. Coronary interventional procedures had an impact on patient prognosis.

Ritmo circadiano del síndrome coronario agudo. Réplica / Circadian rythm in acute coronary syndrome. Author´s reply

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[Differential circadian rhythms in myocardial infarction according to its extent by electrocardiogram]. / Diferencias en el ritmo circadiano del infarto de miocardio según su extensión electrocardiográfica.

BACKGROUND AND OBJECTIVE: To determine the existence of circadian rhythm in the time of onset of acute myocardial infarction (AMI) according to their extension type (Q-wave vs. non-Q-wave). PATIENTS AND METHOD: We studied a retrospective cohort of patients from a multicentre study of myocardial infarction (ARIAM study group). We collected information about 54,249 infarctions from the data base of the ARIAM (Analysis of Delay in AMI) Spanish multicentre study. The following variables were analysed: general variables --age, gender, previous ischemic heart disease, outcome at coronary care unit, infarction electrocardiograph type (Q wave or non-Q wave) and location of AMI--, cardiovascular risk factors, and previous drug treatment of the patients. To verify the presence of circadian rhythm we developed a simple test of equality of time series based on the multiple-sinusoid cosinor analysis. Three sinusoids (24-12-8 h periods) were used. RESULTS: The time of pain onset shows circadian rhythm (p < 0.0000), which also is observed in both infarction electrocardiograph characteristics subgroups (Q-wave infarction and non-Q-wave infarction) (p < 0.0000). Q-wave infarction shows sinusoid curve with one maximum morning peak and non-Q-wave shows bimodal curve, with two peaks. Comparison between their curves shows statistical significance (p < 0.0000). CONCLUSIONS: AMI onset follows a circadian rhythm pattern, which is also observed in analysed subgroups. Differences in the circadian rhythm according to the Q/non-Q wave infarction characteristics, could be determined by different physiopathologic mechanism. The cosinor model fit with three components (24, 12 and 8-hour-periods) show good sensitivity to determine circadian rhythm.