Clinical features and outcome of acute otitis media in early infancy

摘要

Objectives: Acute otitis media (AOM) is common in childhood, but little is known on its course very early in infancy. In this study we investigated predisposing factors, clinical characteristics, and long-term outcomes of AOM in very young infants. Methods: One hundred sixty infants aged less than 12 months with AOM hospitalized in two general hospitals during 2005-2006 were included in the study and followed-up for 3 years. Demographics, history, clinical manifestations, and further AOM episodes were studied in two infant groups defined by age at the first AOM episode: the very young infants, aged less than 60 days, and the older infants aged 61-365 days. Results: Of the 147/160 infants successfully followed-up, 48 (32.7%) were aged less than 60 days and 99 (67.3%) were aged 61-365 days. The very young infants with AOM had more siblings (1.25 vs. 0.87; p=0.047) and used pacifiers less often (45.8% vs. 75.8%; RR 0.61, 95% CI 0.44-0.84; p=0.0007). Purulent otorrhea and irritability were more common in the early AOM onset group (52.1% vs. 32.3%; risk ratio (RR) 1.61, 95% confidence interval (CI) 1.09-2.39; p=0.03, and 60.4% vs. 38.4%; RR 1.57, 95% CI 1.12-2.21; p=0.01, respectively). AOM was complicated with meningitis in two infants, both in the very young group, and with mastoiditis in a further two infants, one in each group. No difference in further AOM episodes, use of ventilation tubes, or hearing impairment was observed between the two infant groups. Conclusions: AOM in the first 2 months of life may have different predisposing factors and clinical presentations, but not different recurrence rates or long-term outcomes.