Antecedentes: En México, la inmunoterapia con alérgenos (ITA) y con veneno de himenópteros (VIT) se practica tradicionalmente combinando criterios de las escuelas europea y estadounidense; los dos tipos de extractos están comercialmente disponibles en México. Para una ITA adecuada es crucial un diagnóstico oportuno.Objetivo: Presentar GUIMIT 2019, Guía Mexicana de Inmunoterapia 2019, de base amplia, actualizada, que abarca temas de diagnóstico, indicaciones, dosificación, mecanismos, efectos adversos de la ITA y expectativas con esta modalidad de tratamiento.Método: Con la participación de múltiples grupos mexicanos de alergólogos, que incluían los centros formadores universitarios en alergia e inmunología, se desarrolló el documento de la guía según la metodología ADAPTE. Las guías de inmunoterapia de la European Academy of Allergy and Clinical Immunology, The American Academy of Allergy, Asthma and Immunology, German Society for Allergology and Clinical Immunology y del American College of Allergy, Asthma, and Immunology se seleccionaron como guías fuente, ya que recibieron la puntuación AGREE-II más alta entre las guías internacionales disponibles; su evidencia conforma la base científica de GUIMIT 2019.Resultados: En GUIMIT 2019 se emiten recomendaciones fuertes o débiles (sugerencias) acerca de temas directamente relacionados con el diagnóstico in vivo o in vitro de las enfermedades alérgicas mediadas por IgE, la preparación y aplicación de ITA o VIT y sus efectos adversos; se incluye la revisión de las modalidades de ITA para el futuro. Todos los argumentos que se exponen fueron discutidos y votados con > 80 % de aprobación.Conclusión: Un grupo amplio y diverso de expertos en ITA y VIT emitió recomendaciones transculturizadas basadas en evidencia, que alcanzaron consenso; con ellas se pretende mejorar y homologar la práctica de la inmunoterapia en México.
Background Allergen immunotherapy (AIT) has a longstanding history and still remains the only disease-changing treatment for allergic rhinitis and asthma. Over the years 2 different schools have developed their strategies: the United States (US) and the European. Allergen extracts available in these regions are adapted to local practice. In other parts of the world, extracts from both regions and local ones are commercialized, as in Mexico. Here, local experts developed a national AIT guideline (GUIMIT 2019) searching for compromises between both schools. Methods Using ADAPTE methodology for transculturizing guidelines and AGREE-II for evaluating guideline quality, GUIMIT selected 3 high-quality Main Reference Guidelines (MRGs): the European Academy of Allergy, Asthma and Immunology (EAACI) guideines, the S2k guideline of various German-speaking medical societies (2014), and the US Practice Parameters on Allergen Immunotherapy 2011. We formulated clinical questions and based responses on the fused evidence available in the MRGs, combined with local possibilities, patient's preference, and costs. We came across several issues on which the MRGs disagreed. These are presented here along with arguments of GUIMIT members to resolve them. GUIMIT (for a complete English version, Supplementary data) concluded the following: Results Related to the diagnosis of IgE-mediated respiratory allergy, apart from skin prick testing complementary tests (challenges, in vitro testing and molecular such as species-specific allergens) might be useful in selected cases to inform AIT composition. AIT is indicated in allergic rhinitis and suggested in allergic asthma (once controlled) and IgE-mediated atopic dermatitis. Concerning the correct subcutaneous AIT dose for compounding vials according to the US school: dosing tables and formula are given; up to 4 non-related allergens can be mixed, refraining from mixing high with low protease extracts. When using European extracts: the manufacturer's indications should be followed; in multi-allergic patients 2 simultaneous injections can be given (100% consensus); mixing is discouraged. In Mexico only allergoid tablets are available; based on doses used in all sublingual immunotherapy (SLIT) publications referenced in MRGs, GUIMIT suggests a probable effective dose related to subcutaneous immunotherapy (SCIT) might be: 50–200% of the monthly SCIT dose given daily, maximum mixing 4 allergens. Also, a table with practical suggestions on non-evidence-existing issues, developed with a simplified Delphi method, is added. Finally, dissemination and implementation of guidelines is briefly discussed, explaining how we used online tools for this in Mexico. Conclusions Countries where European and American AIT extracts are available should adjust AIT according to which school is followed.
Antecedentes: Estudios en niños han identificado factores asociados con la falta de control del asma. En adultos no están bien definidos.Objetivo: Identificar los factores relacionados con la falta de control del asma en adultos.Métodos: Se incluyeron adultos con asma clasificados como controlados, parcialmente controlados y no controlados según los criterios de la Global Initiative for Asthma.Resultados: Se incluyeron 200 pacientes (75.5 % mujeres), edad promedio de 38.4 ± 11.93 años. Cien pacientes con asma controlada y 100 con asma no controlada y parcialmente controlada; 35 (88.2 %) con persistencia leve, 14 (10 %) con persistencia moderada y 97 (1.8 %) con persistencia grave; en estrés se encontró RM = 0.41 (IC 95 % = 0.23-0.75), p = 0.03; en tabaquismo actual y activo, RM = 4.23 (IC 95 % = 1.35-13.2), p = 0.007; y en uso correcto de inhaladores, RM = 0.36 (IC 95 % = 0.13-0.97), p = 0.031. Los pacientes no tuvieron contacto con peluches ni alfombras.Conclusiones: Se observó asociación con tabaquismo actual activo y dermatitis atópica. Como factores de protección se identificó niveles normales de eosinófilos en sangre, uso correcto de inhaladores, VEF1 > 80 %, ausencia de estrés y de contacto con alfombras y peluches.
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