Safety of subcutaneous immunotherapy with inhalant allergen extracts: a single-center 30-year experience from Turkey.
2015
AbstractContext: Although subcutaneous allergen immunotherapy (SCIT) is effective in allergic rhinitis (AR) and asthma, it carries a risk of local and systemic adverse reactions.Objective: The aim of this study was to evaluate the rates and clinical characteristics of local and systemic reactions (LR and SR), and to identify their relation of demographic features, allergen extracts and diagnosis.Materials and methods: This study analyzed the administration of SCIT from 1983 to 2013; involving 1816 patients affected by allergic asthma and/or AR.Results: The rates of SR from SCIT were 0.078% per injection and 9% per patient. According to the World Allergy Organization 2010 grading system, 91 grade 1 reactions (44%), 67 grade 2 reactions (32.3%), 33 grade 3 reactions (16%) and 16 grade 4 reactions (7.7%) were seen. There was no fatal outcome from any of the SRs. Risk factors for a SR included: aluminium-adsorbed extract, pollen-containing vaccines, large LR and recurrent (≥2) LRs. The total LR rates were 0.0...
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