Abstract

Bronchial asthma is the most prevalent chronic condition among children, however, in Chile, it is underdiagnosed. This may be due to medical professionals failing to recognize the disease. It is essential to be aware of the symptoms and signs that are suggestive of the disease in order to begin an appropriate treatment to achieve disease control. Asthma must be suspected in school age children who present repeated episodes of bronchial obstruction. The diagnosis should be confirmed with lung function tests that demonstrate variable airflow obstruction with a positive bronchodilator response. Treatment is based on two fundamental pillars: education and pharmacological treatment. Educational activities must include: information about the disease and its treatment, regular monitoring of treatment adherence, teaching and reviewing the correct inhalation technique at every checkup, developing a personalized written action plan and scheduling regular follow-up appointments. The gold standard for treatment is maintenance inhaled corticosteroids, in the lowest possible dose that enables disease control. The goal of the treatment is to eliminate daily symptoms and asthma crisis. Therapy should be increased if control is not achieved, but before starting it, adherence to maintenance treatment, inhala-tion technique, presence of associated comorbidities and environmental exposure should be evaluated. In the mild patient, who is not receiving maintenance therapy, rescue treatment should be done with bronchodilators, always associated with inhaled corticosteroids. This consensus is a guide to improve the diagnosis, treatment and control of asthma in schoolchildren

Highlights

  • Bronchial asthma is the most prevalent chronic condition among children, in Chile, it is underdiagnosed

  • This may be due to medical professionals failing to recognize the disease

  • essential to be aware of the symptoms and signs

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Summary

Medición directa de la inflamación de la vía aérea

La determinación del tipo de inflamación de la vía aérea en forma directa se realiza por medio de estudio citológico del esputo inducido o muestras de lavado broncoalveolar y/o biopsia bronquial. El FeNO se encuentra elevado en el asma con inflamación eosinofílica de la vía aérea, sin embargo, no es específico de asma ya que se puede encontrar elevado en bronquitis eosinofílica, rinitis alérgica, eczema y atopía. Es importante señalar que una FeNO normal no descarta el diagnóstico de asma bronquial ni contraindica un tratamiento con corticoides inhalados. Se ha observado que hay una asociación entre asma alérgico mediado por linfocitos T Helper 2 e inflamación eosinofílica de la vía aérea. Un recuento de eosinófilos normal no descarta asma ni eosinofilia de la vía aérea[30]. Se ha demostrado que un grupo de pacientes con asma bronquial pueden tener niveles bajos de vitamina D (< 20 ng/ml), lo que se asocia a función pulmonar disminuida, mayor frecuencia de crisis y menor respuesta al tratamiento con corticoides inhalados[33,34]. Así en pacientes con asma y niveles bajos de vitamina D se recomienda suplementarla[36]

Clasificación del asma bronquial
Tratamiento de la crisis de asma
Tratamiento farmacológico de la crisis asmática
Educación en asma bronquial
Findings
Intervenciones específicas para mejorar adherencia a tratamiento
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