Bronquiectasias no asociadas a fibrosis quística en niños / Non cystic fibrosis bronchiectasis in children

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How molecular diagnosis may modify immunotherapy prescription in multi-sensitized pollen-allergic children

INTRODUCTION: Specific immunotherapy (SIT) is used to treat asthma and allergic rhinitis, and a dose-response relationship has been found for SIT efficacy, creating a need to accurately select the allergen used in therapy. This need is especially pronounced in poly-sensitized children living in areas where different pollen allergen sources coexist in the same season, as this circumstance complicates diagnostic efforts. In such cases, component-resolved diagnosis (CRD) can increase diagnostic accuracy and aid in SIT prescription. MATERIALS AND METHODS: We hypothesized that CRD results would lead to modifications in classical immunotherapy prescription based on sources such as medical history, season of symptom presentation, and skin testing. We studied a sample of children indicated for immunotherapy in whom classical methods had not pointed out the most relevant allergen due to sensitization to more than two pollens. We used a small panel of recombinant allergens, analyzing the percentage of changes to prescription considering the findings of molecular studies. RESULTS: Of the 70 children included, CRD led to modified immunotherapy prescription in 54.3%. Indications of single-allergen therapy increased from 18% to 51% when CRD was included. The decision to prescribe immunotherapy was reversed following CRD in 9.3% of cases. DISCUSSION: CRD use alters the choice of specific immunotherapy in poly-sensitized children. A wide panel of recombinant allergens may not be necessary to improve immunotherapy indication using molecular techniques; rather, a smaller panel adapted to include those allergens prevalent in the geographical area in question appears to be sufficient for more effective immunotherapy, also leading to an improved cost-benefit ratio

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How molecular diagnosis may modify immunotherapy prescription in multi-sensitized pollen-allergic children.

INTRODUCTION: Specific immunotherapy (SIT) is used to treat asthma and allergic rhinitis, and a dose-response relationship has been found for SIT efficacy, creating a need to accurately select the allergen used in therapy. This need is especially pronounced in poly-sensitized children living in areas where different pollen allergen sources coexist in the same season, as this circumstance complicates diagnostic efforts. In such cases, component-resolved diagnosis (CRD) can increase diagnostic accuracy and aid in SIT prescription. MATERIALS AND METHODS: We hypothesized that CRD results would lead to modifications in classical immunotherapy prescription based on sources such as medical history, season of symptom presentation, and skin testing. We studied a sample of children indicated for immunotherapy in whom classical methods had not pointed out the most relevant allergen due to sensitization to more than two pollens. We used a small panel of recombinant allergens, analyzing the percentage of changes to prescription considering the findings of molecular studies. RESULTS: Of the 70 children included, CRD led to modified immunotherapy prescription in 54.3%. Indications of single-allergen therapy increased from 18% to 51% when CRD was included. The decision to prescribe immunotherapy was reversed following CRD in 9.3% of cases. DISCUSSION: CRD use alters the choice of specific immunotherapy in poly-sensitized children. A wide panel of recombinant allergens may not be necessary to improve immunotherapy indication using molecular techniques; rather, a smaller panel adapted to include those allergens prevalent in the geographical area in question appears to be sufficient for more effective immunotherapy, also leading to an improved cost-benefit ratio.

Reacción inesperada tras la administración de metilprednisolona / Unexpected reaction to intravenous methylprednisolone

La incidencia de reacciones alérgicas a los corticoides en los niños es baja, especialmente si tenemos en cuenta su amplia utilización en pediatría. Se han descrito reacciones graves tras la administración de corticoides, por lo que la alergia a éstos debe tenerse presente cuando se utilicen. La vía de administración que más frecuentemente induce reacciones adversas graves es la sistémica, y los fármacos más frecuentemente implicados son la metilprednisolona y la hidrocortisona. Se debe realizar un diagnóstico adecuado que confirme la hipersensibilidad al corticoide sospechoso, así como pruebas de tolerancia a otros corticoides con el objetivo de ofrecer al paciente un tratamiento alternativo. Presentamos el caso de un adolescente de 14 años de edad con una reacción alérgica grave tras la administración de metilprednisolona (AU)

Despite the widespread use of corticosteroids in children, hypersensitivity reactions to corticosteroids are rarely. However, life-threatening reactions have been described, and clinicians should be aware of the risk posted by potential allergy to corticosteroid. Parenteral administration of such corticosteroids as methylprednisolone and hydrocortisone is more commonly associated with severe hypersensitivity reactions than other routes. A close and detailed evaluation is required to confirm the presence of a true hypersensitivity reaction to the suspected drug, and a challenge test with a different steroid must be performed in order to offer a safe alternative for further treatments. We report the case of a 14-year-old boy with an adverse reaction caused by methylprednisolone (AU