RESUMO
INTRODUCTION: The aim of this research is to find the association between the pathogenic bacteria obtained from the adenoid culture and clinical characteristics of adenoid-related diseases in children. METHODS: In this retrospective study, we reviewed the medical records of children who had adenoidectomy for adenoid-related diseases. Demographic data, diagnoses, indications for adenoidectomy and bacterial culture results were collected. The adenoid size was measured in the lateral skull X-ray as adenoid-nasopharyngeal ratio. Associations between the culture results and the demographic data, adenoid size, and the diagnoses were analyzed. RESULTS: There were 407 children who had adenoidectomy for obstructive sleep-disordered breathing (75.2%), otitis media with effusion (19.2%), and chronic sinusitis (5.6%). Median age was 5.9 years. Common pathogenic bacteria in the adenoid were Haemophilus influenzae (26.2%), Staphylococcus aureus (23.5%), Streptococcus pneumoniae (18.2%), and Moraxella catarrhalis (12%). The patient's age had significant association with the prevalence of pathogenic bacteria. S. pneumoniae was most prevalent in young children up to 7 years. S. aureus was more common in children over 7 years. H. influenzae had similar prevalence in all age groups. Size of the adenoid and type of adenoid-related diseases had no association with the outcome of bacterial culture. CONCLUSION: Age of the patients was the significant factor associated with the bacteriological findings of the adenoid while size and types of adenoid-related diseases were not associated with the outcome of bacterial culture.