[Characteristics and clinical course of patients with acute heart failure and the therapeutic measures applied in Spanish emergency departments: based on the EAHFE registry (Epidemiology of Acute Heart Failure in Emergency Departments)]

Emergencias. 2015 Feb;27(1):11-22.
[Article in Spanish]

Abstract

Objectives: To analyze data recorded in the EAHFE registry (Epidemiology of Acute Heart Failure in Emergency Departments), which collects information on the clinical characteristics and laboratory findings of patients with acute heart failure (AHF) treated in 29 Spanish hospital emergency departments (EDs) as well as therapies used and clinical course. We analyzed changes in management observed over time and compared the results with data recorded in other AHF registries.

Material and methods: Prospective multicenter cohort study of consecutive patients treated in 3 different years: 2007, 2009, and 2011. We collected demographic, clinical, and laboratory data; medications taken prior to the emergency and in the ED; and outcome variables (in-hospital and 30-day and 1-year mortality rates, readmissions within 30 days). Changes in therapy and course in the 3 years were analyzed. The literature was reviewed to find other national and international AHF registries.

Results: A total of 5845 patients were included (2007, 948; 2009, 1483; 2011, 3414). The mean age was 79 years and 56% were women. The AHF episode registered was the first experienced by 34.6% of the patients. Comorbidity was high: 82% had hypertension, 42.3% had diabetes mellitus, and 47.7% had atrial fibrillation. Severe or total functional dependence was observed in 21.9%, and 57.3% had systolic dysfunction (left ventricular ejection fraction, 38.3%). The main treatments administered consisted in diuretics (96.8%), endovenous nitroglycerine (20.7%), noninvasive ventilation (6.4%), and inotropic agents or vasopressors (3.6%). The glomerular filtration rate was low in 57%. Troponin and natriuretic peptide levels were measured in the EDs in 49.1% and 42.4% of the cases, respectively. Patients presented as normotensive in 66.4% of the cases, hypertensive in 23.5%, and hypotensive in 4.6% (0.7% in shock); 76.1% were admitted (1.9% to the ICU). The median hospital stay was 7 days and 23.9% were discharged from the ED. In-hospital mortality was 7.6%; 30-day mortality was 9.4% and 1-year mortality 29.5%. Orders for troponin and natriuretic peptide determinations increased over the 3 study periods, and the intravenous infusion of diuretics and inotropic agents and vasoconstrictors decreased (P < 0.001, all comparisons). Revisits within 30 days also decreased (P = 0.004). No changes were observed in in-hospital or 30-day mortality rates between 2007 and 2011. We reviewed 14 previously published registry reports (8 compiled prospectively); only 2 of the registries included ED patients.

Conclusion: The EAHFE registry describes the characteristics of AHF in a cohort that resembles the universe of our patients with AHF. Significant changes were observed over time in some aspects of AHF management. Revisits decreased, but mortality rates remained unchanged. Only 2 other previously analyzed registries included patients with AHF treated in hospital EDs.

Objetivo: Presentación de los resultados del Registro EAHFE (Epidemiology of Acute Heart Failure in Emergency Departments) que recoge las características clínicas, de laboratorio, terapéuticas y la evolución de los pacientes con insuficiencia cardiaca aguda (ICA) atendidos en 29 servicios de urgencias hospitalarios (SUH) españoles. Se analizan los cambios de manejo a lo largo del tiempo; y se comparan los resultados con los de otros registros de ICA.

Metodo: Estudio multicéntrico, de cohortes, prospectivo, de inclusión consecutiva, realizado en tres periodos (2007, 2009 y 2011). Se recogieron datos demográficos, clínicos, de laboratorio, del tratamiento farmacológico previo y el administrado en SUH y variables evolutivas (mortalidad intrahospitalaria y a los 30 días y al año, reingreso a 30 días). Se analizaron los cambios terapéuticos y evolutivos a lo largo de estos 3 periodos. Se revisó la literatura para identificar registros previos de ICA de carácter nacional o internacional.

Resultados: Se incluyeron 5.845 pacientes (2007: 948, 2009: 1.483, 2011: 3.414), con edad media de 79 años y 56% mujeres. Un 34,6% era un primer episodio de ICA. Presentaron elevada comorbilidad (82% hipertensión, 42,3% diabetes mellitus, 47,7% fibrilación auricular). Un 21,9% tenía dependencia funcional grave o total. El 57,3% tenía una disfunción sistólica (FEVI 38,3%). Los principales tratamientos administrados en urgencias consistieron en diuréticos (96,8%), nitroglicerina endovenosa (20,7%), ventilación no invasiva (6,4%) y fármacos inotrópicos o vasopresores (3,6%). El 57% presentaba una tasa de filtrado glomerular disminuida. Las troponinas y los péptidos natriuréticos se determinaron en urgencias en un 49,1% y 42,4% de casos, respectivamente. Las formas de presentación se clasificaron como: normotensiva (66,4%), hipertensiva (23,5%), hipotensiva (4,6%, 0,7% con shock). El 76,1% fue ingresado (1,9% en intensivos), con una mediana de estancia hospitalaria de 7 días, y el 23,9% dado de alta desde urgencias. La mortalidad intrahospitalaria fue 7,6%, a 30 días 9,4% y al año 29,5%. A lo largo del periodo estudiado, ha aumentado la solicitud de troponinas (p < 0,001) y péptidos natriuréticos (p <0,001) en urgencias, ha disminuido el uso de diuréticos en perfusión (p < 0,001) y de inotropos/vasoconstrictores (p < 0,001) y ha disminuido el porcentaje de reconsulta a 30 días (p = 0,004). No se observaron cambios en la mortalidad intrahospitalaria y a los 30 días entre el periodo 2007-2011. Se han revisado 14 registros anteriores (8 prospectivos), y solo en 2 la inclusión de pacientes se hizo desde el SUH.

Conclusiones: El Registro EAHFE describe las características de la ICA a partir de una cohorte que se aproxima al universo de pacientes con ICA. Con el paso del tiempo se observan cambios significativos en el manejo de la ICA: las revisitas han disminuido aunque la mortalidad no se ha modificado. Aparte del Registro EAHFE, solo existen otros 2 registros en el mundo que incluyan a los pacientes con ICA atendidos en urgencias.

Keywords: Acute heart failure; Características; Clinical course; Evolución; Hospital emergency health services; Insuficiencia cardiaca aguda; Manejo; Registries; Registro; Servicios de Urgencias Hospitalarios; Therapy.

Publication types

  • English Abstract