RESUMO
BACKGROUND: Patients who receive noninvasive ventilation (NIV) in the emergency department (ED) sometimes have a limitation of life support treatment (LLST). The characteristics and prognosis in these patients may be worse, however, few studies have been carried out in this respect. OBJECTIVE: Analyze the differences between patients receiving NIV in the ED with LLST (NIV-LLST) or without LLST (NIV-noLLST) and their impact on in-hospital mortality, as well as investigate in-hospital mortality in the NIV-LLST group. METHOD: We performed a secondary analysis of data from the NIVCat registry. This was a prospective, multicenter, analytical cohort study with consecutive inclusion of patients receiving NIV from February to March 2015 in 11 hospital EDs in Spain. Data on the baseline characteristics, the acute episode, and final patient destination were collected. The dependent variable was all-cause in-hospital mortality. RESULTS: We analyzed 152 cases receiving NIV, 66 (43.4%) of whom had NIV-LLTS. Age ≥ 75 years was associated with NIV-LLST. In-hospital mortality was higher in the NIV-LLST group, with an adjusted hazard ratio of 2.50 (95% confidence interval [CI] 1.03-6.06). Patients with NIV-LLST presenting an exacerbation of chronic obstructive pulmonary disease (COPD) presented the lowest mortality, with an odds ratio of 0.27 (95% confidence interval 0.08-0.93), compared with the remaining patients. CONCLUSION: In our cohort of patients receiving NIV in the ED, the presence of LLST is frequent and is associated with high hospital mortality. The NIV-LLST patients with a COPD exacerbation have a better prognosis than NIV-LLST patients with other diseases.
Assuntos
Ventilação não Invasiva , Doença Pulmonar Obstrutiva Crônica , Insuficiência Respiratória , Idoso , Estudos de Coortes , Humanos , Prognóstico , Estudos Prospectivos , Doença Pulmonar Obstrutiva Crônica/terapia , Espanha/epidemiologiaRESUMO
OBJECTIVES: To study how noninvasive ventilation (NIV) is used in prehospital emergency services and hospital emergency departments. To explore associations between NIV use and hospital mortality. MATERIAL AND METHODS: Prospective analysis of a consecutive multicenter cohort of patients who were treated with NIV between February and March 2015. The study was undertaken in emergency medical services in Catalonia and 8 Catalan hospital emergency departments. We collected information during the acute episode and on discharge, as well as data describing the patients' condition when stable. The dependent variable was all-cause hospital mortality. RESULTS: We studied 184 acute episodes requiring NIV, in the prehospital setting in 25 cases (13.6%) and in the hospital in 159 (86.4%). The most common scenario was acute heart failure (AHF) (38.0%). The second most common was chronic obstructive pulmonary disease (COPD) (34.2%). In most cases, NIV was discontinued in the emergency department. Mortality was 7.5% during prehospital care and 21.4% in the hospital. Hospital mortality was associated with limiting the use of life support. We detected no significant differences in mortality between the groups of patients with AHF vs COPD. CONCLUSION: The use of NIV in prehospital and hospital emergency care follows current evidence-based recommendations and is required more often for AHF than for exacerbated COPD. Hospital mortality is high in this context and is associated with frequent limiting of life support.
OBJETIVO: Conocer las características de la ventilación no invasiva (VNI) en los servicios de urgencias prehospitalarios y hospitalarios. Comparar los resultados obtenidos en función de la mortalidad hospitalaria. METODO: Estudio de cohortes multicéntrico, analítico, prospectivo con inclusión consecutiva de pacientes en los que se realizó VNI durante febrero y marzo de 2015 en el ámbito prehospitalario por el Sistema d'Emergències Mèdiques (SEM) y en 8 servicios de urgencias (SU) hospitalarios de Cataluña. Se recogieron las características basales, del episodio agudo y de destino, y la variable dependiente fue la mortalidad hospitalaria por todas las causas. RESULTADOS: Se recogieron 184 episodios de VNI, 25 episodios (13,6%) prehospitalarios y 159 (86,4%) hospitalarios. El escenario más frecuente para su uso fue la insuficiencia cardiaca aguda (ICA) (38,0%) seguido de la agudización de la enfermedad pulmonar obstructiva crónica (EPOC) (34,2%). En la mayoría de casos la VNI se retira en los SU. La mortalidad fue del 7,5% y del 21,4% en urgencias prehospitalarias y hospitalarias, respectivamente. La mortalidad hospitalaria se relacionó con más presencia de limitación del tratamiento de soporte vital (LTSV). No hubo diferencias de mortalidad entre los diferentes escenarios clínicos. CONCLUSIONES: La VNI en los SU prehospitalarios y hospitalarios sigue las recomendaciones de la evidencia científica actual y se realiza principalmente en la ICA y en la agudización de la EPOC. La mortalidad hospitalaria es elevada y se relaciona con la LTSV, que es muy frecuente.