The protocol of rational use of oral H1 receptor antagonists in children: a clinical practice guideline primarily introduces key methods, processes and precautions of the guideline to standardize and guarantee the formulation of this evidence-based guideline. Referring to the World Health Organization Guidelines Development Manual, the guideline will be conducted according to the following steps, which involves the establishment of project group; registration (IPGRP-2020CN110); declaration of interest and funding support; identification of the clinical issues and outcomes; evidence retrieval, assessment, synthesis and utilization; investigation of patients’ preferences and values; development, external review and revision of recommendations; guideline release, dissemination and update.
Oral H1-antihistamines are one of the most commonly prescribed drug categories in the treatment of allergic diseases in children. However, its rational application still lacks sufficient evidence and pharmaceutical guidance, making its clinical use risky. Based on the best available evidence, expert experience, and the willingness of patients' families, the guideline development panel developed this guideline, using the grading of recommendations assessment, development and evaluation (GRADE) approach. The guidelines developed 19 recommendations in 8 domains, covering the therapeutic status of oral H1-antihistamines in pediatric allergic diseases, age range, dose, duration of treatment, adjustment in the presence of hepatic and renal insufficiency, drug interactions, adverse effects and adherence. As a result, this guideline helped to standardize and guide the rational use of oral H1-antihistamines in pediatric allergic diseases.