Retrospective study of acute mastoiditis in children in Spain attended in a Pediatric Emergency department

Objective: To analyze the cases of acute mastoiditis, characteristics, management and complications in children attended in the emergency department.

Methods: Retrospective study of acute mastoiditis in a Spanish tertiary hospital over a 6-year period (2018-2023).

Results: One hundred two episodes of acute mastoiditis were analyzed (54% males, median age 1.8 years). Microorganisms were isolated in one third of cases, mainly Streptococcus pyogenes (64% of ear secretion cultures). Complications occurred in 27.5%, primarily subperiosteal abscess. A younger age, absence of vaccination schedule, previous history of otitis, cochlear implant carriers or white blood cell counts and C-reactive protein levels were not associated with complications. Complicated cases had longer hospitalizations. Treatment included antibiotics, corticosteroids, and surgery in 50% of cases.

Conclusions: This study shows an increase of acute mastoiditis during 2023, with a relevant role of S. pyogenes. A younger age, absence of vaccination, personal history of otitis or cochlear implant, blood cell counts and C-reactive protein levels were not associated with complications.