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1.
Allergy ; 77(12): 3641-3647, 2022 12.
Artigo em Inglês | MEDLINE | ID: mdl-35815908

RESUMO

BACKGROUND: Iodinated contrast media produce non-immediate hypersensitivity reactions (NIHR). The goal of this prospective study was to determine the utility of skin tests and the subsequent tolerance to negative skin-tested iodinated contrasts in patients with NIHR caused by iomeprol. METHODS: Prick and intradermal tests with iomeprol, iopamidol, iopromide, and iobitridol were performed in all patients. IV challenge with the causative contrast (iomeprol in 90%) was made if skin tests were negative. In case of a positive skin test with the causal contrast, or a positive challenge test with it, IV challenge test with an alternative, negative skin-tested contrast was performed in all patients. RESULTS: Skin tests were positive in 47.6% (20/42) of patients with NIHR induced by iomeprol. Of the 66 challenge tests performed with negative skin-tested iodinated contrasts, tolerance was confirmed in 35 (53%): 32 iomeron, 2 iobitridol, 1 iopamidol. Cross-reactivity between iomeprol and iopamidol was 22% (4/20 in patients with positive skin tests and 5/21 in patients with negative skin tests). CONCLUSIONS: Sensitivity of the skin tests was less than 50% NIHRs due to iomeprol, while the negative predictive value of skin tests in patients who tolerated challenges with alternative contrasts (mainly iopamidol) was 53% (35 tolerated out of 66 performed). The cross-reactivity between iomeprol and iopamidol is high.


Assuntos
Hipersensibilidade Imediata , Compostos de Iodo , Humanos , Iopamidol/efeitos adversos , Meios de Contraste/efeitos adversos , Estudos Prospectivos , Testes Cutâneos , Compostos de Iodo/efeitos adversos , Hipersensibilidade Imediata/diagnóstico , Hipersensibilidade Imediata/etiologia
9.
Expert Rev Clin Immunol ; 8(1): 33-41, 2012 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-22149338

RESUMO

Currently available second-generation H1-antihistamines include a wide group of drugs with a better therapeutic index (or risk-benefit ratio) than the classic antihistamines, although their properties and safety profiles may differ. Bilastine is a newly registered H1-antihistamine for the oral treatment of allergic rhinitis and urticaria, with established antihistaminic and antiallergic properties. Clinical studies in allergic rhinitis and chronic urticaria show that once-daily treatment with bilastine 20 mg is effective in managing symptoms and improving patient's quality of life, with at least comparable efficacy to other nonsedative H1-antihistamines. As far as studies in healthy volunteers, clinical assays and clinical experience can establish, bilastine's safety profile is satisfactory, since it lacks anticholinergic effects, does not impair psychomotor performance or actual driving, and appears to be entirely free from cardiovascular effects.


Assuntos
Benzimidazóis/uso terapêutico , Antagonistas dos Receptores Histamínicos H1/uso terapêutico , Piperidinas/uso terapêutico , Rinite Alérgica Sazonal/tratamento farmacológico , Urticária/tratamento farmacológico , Condução de Veículo , Benzimidazóis/efeitos adversos , Doenças Cardiovasculares/induzido quimicamente , Ensaios Clínicos como Assunto , Antagonistas dos Receptores Histamínicos H1/efeitos adversos , Humanos , Piperidinas/efeitos adversos
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