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Determinants Of Oral Corticosteroid Responsiveness in Wheezing Asthmatic Youth (DOORWAY)

18 de julio de 2014 actualizado por: Professor Francine Ducharme, St. Justine's Hospital
The aim of the prospective cohort study is to: (1) document the magnitude of response to oral corticosteroids administered to children presenting to the emergency department with moderate or severe asthma and (2) quantify clinically available potential determinants of the response to corticosteroids, such as age, gender, triggers of the index exacerbation, environmental tobacco smoke (ETS), gene polymorphisms, and their interactions.

Descripción general del estudio

Estado

Terminado

Condiciones

Descripción detallada

The objective of the large multicentre cohort study is to quantify the response to oral corticosteroids in children aged 1 to 17 years presenting to the ED with a moderate or severe asthma exacerbation.

The main outcome is hospital admission within 72 hours of the oral corticosteroid administration.

Secondary outcomes include the change in Pediatric Respiratory Assessment Measure (PRAM), length of active treatment and other markers of response to therapy in the ED as well as markers of recovery over the next 10 days.

Tipo de estudio

De observación

Inscripción (Actual)

1011

Contactos y Ubicaciones

Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.

Ubicaciones de estudio

  • Canadá
      • Quebec, Canadá, G1V 4G2
        • Centre Hospitaliser de l'Université Laval
    • Ontario
      • London, Ontario, Canadá, N6A 2V5
        • Children's Hospital of London Health Sciences Centre
      • Ottawa, Ontario, Canadá, K1H 8L1
        • Children's Hospital of Eastern Ontario
    • Quebec
      • Montreal, Quebec, Canadá, H3T1C5
        • CHU Sainte-Justine (CHUSJ)
      • Montreal, Quebec, Canadá, H3H 1P3
        • Montreal Children's Hospital (MCH)

Criterios de participación

Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.

Criterio de elegibilidad

Edades elegibles para estudiar

1 año a 17 años (Niño)

Acepta Voluntarios Saludables

No

Géneros elegibles para el estudio

Todos

Método de muestreo

Muestra de probabilidad

Población de estudio

Children aged 1 to 17 years with moderate to severe asthma with Pediatric Respiratory Assessment Measure (PRAM) ≥4.

Descripción

Inclusion Criteria:

  • Subject will be eligible if he/she:

    1. is aged 1 to 17 years,
    2. has not received any oral, IM or IV corticosteroid within the last 5 days?
    3. Presents to the hospital emergency department with an acute episode of cough, wheezing and/or dyspnea?

    4. Has asthma as defined as one or more of the following 6 criteria:

      (i) prior diagnosis of asthma made by a physician; OR (ii) prior documented episode of acute cough, wheezing and/or dyspnea with significant response to inhaled β2-agonists or to oral corticosteroids; OR (iii) in a child aged <2 years, 3 or more episodes of cough, wheezing and/or dyspnea, including the index visit; OR (iv) previous lung function tests showing significant reversibility post-bronchodilation (≥12% FEV1 or ≥25% Rrs at 4 to 8 Hz); OR (v) a positive provocation test (PC20 ≤8 mg/mL or Provocation Dose (to increase Rrs by 50% or more (PD50) ≤8 mg/mL), OR (vi) the current episode diagnosed or suspected of asthma by the emergency physician?

    5. have moderate or severe airway obstruction, defined as a Paediatric Respiratory Asthma Measure (PRAM) score >3 at baseline,

Exclusion Criteria:

  • Patient will be excluded if :

    1. he/she has another chronic respiratory condition (such as bronchopulmonary dysplasia or cystic fibrosis);
    2. there is a reasonable suspicion of bronchiolitis or foreign body aspiration;
    3. he/she has a prior history of hypersensitivity to salbutamol, ipratropium bromide or oral prednisone/prednisolone;
    4. he/she has a relative or absolute contraindication to receiving oral corticosteroids such as recent exposure to varicella or live vaccine in past 14 days,
    5. there is confirmed or suspected pregnancy.

Plan de estudios

Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.

¿Cómo está diseñado el estudio?

Detalles de diseño

Cohortes e Intervenciones

Grupo / Cohorte
Oral corticosteroids (OCS)

All patients receive:

  1. Prednisone or Prednisolone at 1 mg/kg (in 1 site) or 2 mg/kg (in all other sites) (max. 50 mg); if vomiting prednisone/prednisolone: they receive dexamethasone (0.3 mg/kg, max. 10 mg)
  2. 2 to 3 doses of salbutamol within the first hour of therapy according to severity Those with severe exacerbations receive 3 treatments with salbutamol and ipratropium bromide within the initial hour of therapy.

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Hospital admission
Periodo de tiempo: 72 hours after oral corticosteroids administration
Hospital admission or Length of active treatment for 8 or more hours after the oral corticosteroid administration or ED return visit associated with hospital admission within 72 hours after the oral corticosteroid administration or ED return visit associated within 72 hours with length of active treatment for 8 or more hours after the oral corticosteroid administration
72 hours after oral corticosteroids administration

Medidas de resultado secundarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Length of active treatment in hospital
Periodo de tiempo: 8 hours after oral corticosteroid administration
8 hours after oral corticosteroid administration
Meeting the severity criteria for admission
Periodo de tiempo: Within 4 hours of oral corticosteroid administration
Proportion of children with a PRAM score ≥4 within 4 hours of oral corticosteroid administration
Within 4 hours of oral corticosteroid administration
PRAM profile in the ED
Periodo de tiempo: Within 4 hours of oral corticosteroid administration
Area under the curve of the PRAM measured hourly for the time of oral corticosteroid (OCS) until 4 hours after OCS
Within 4 hours of oral corticosteroid administration
Time to meeting discharge criteria
Periodo de tiempo: Within 8 hours of oral corticosteroid administration
Time until PRAM score ≤ 3
Within 8 hours of oral corticosteroid administration
Change in respiratory resistance
Periodo de tiempo: Within 4 hours of oral corticosteroid administration
Change in respiratory resistance between baseline and disposition will be documented on the MasterScreen Impulse Oscillometry (Cardinal Health Canada, Montreal, Canada) using previously described standardized techniques in cooperative children aged ≥3 years. (measured in a subset of individuals)
Within 4 hours of oral corticosteroid administration
Unscheduled visits for asthma
Periodo de tiempo: Within 7 days of the index ED exacerbation
unscheduled visits for asthma as reported by parents and confirmed by medical charts.
Within 7 days of the index ED exacerbation
Symptom score
Periodo de tiempo: Within 7 days of the index ED exacerbation
Area under the curve of symptoms measured daily on the validated Asthma flare-up diary for children
Within 7 days of the index ED exacerbation
Duration of asthma symptoms
Periodo de tiempo: Within 7 days of the index ED exacerbation
Duration of symptoms measured daily on the validated Asthma flare-up diary for children
Within 7 days of the index ED exacerbation
Cumulative reliever use
Periodo de tiempo: Within 7 days of the index ED exacerbation
Cumulative number of puffs of reliever medication as recorded daily on the Asthma flare-up diary for children
Within 7 days of the index ED exacerbation
Duration of use of rescue ß2-agonists
Periodo de tiempo: Within 7 days of the index ED exacerbation
Duration of use of rescue ß2-agonists as recorded on the Asthma flare-up diary for children
Within 7 days of the index ED exacerbation

Otras medidas de resultado

Medida de resultado
Medida Descripción
Periodo de tiempo
Adverse events
Periodo de tiempo: Within 7 days of the index ED exacerbation
Number of children with vomiting, serious Infection, psychosis, and mood disturbances
Within 7 days of the index ED exacerbation
Serious Adverse Health Events
Periodo de tiempo: Within 7 days of the index ED exacerbation
Number of children with adverse events requiring hospitalization, prolonged hospitalization, life threatening, other medically important events or associated with significant disability or incapacity
Within 7 days of the index ED exacerbation

Colaboradores e Investigadores

Aquí es donde encontrará personas y organizaciones involucradas en este estudio.

Patrocinador

St. Justine's Hospital

Colaboradores

Canadian Institutes of Health Research (CIHR)

Investigadores

  • Investigador principal: Francine M Ducharme, MD., M.Sc., CHU Sainte Justine, University of Montreal

Publicaciones y enlaces útiles

La persona responsable de ingresar información sobre el estudio proporciona voluntariamente estas publicaciones. Estos pueden ser sobre cualquier cosa relacionada con el estudio.

Publicaciones Generales

Fechas de registro del estudio

Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados ​​por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.

Fechas importantes del estudio

Inicio del estudio

1 de enero de 2011

Finalización primaria (Actual)

1 de enero de 2014

Finalización del estudio (Actual)

1 de enero de 2014

Fechas de registro del estudio

Enviado por primera vez

11 de diciembre de 2013

Primero enviado que cumplió con los criterios de control de calidad

11 de diciembre de 2013

Publicado por primera vez (Estimar)

17 de diciembre de 2013

Actualizaciones de registros de estudio

Última actualización publicada (Estimar)

22 de julio de 2014

Última actualización enviada que cumplió con los criterios de control de calidad

18 de julio de 2014

Última verificación

1 de julio de 2014

Más información

Términos relacionados con este estudio

Palabras clave

Términos MeSH relevantes adicionales

Otros números de identificación del estudio

  • CHUSJ

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