Adenoidectomy for middle ear effusion: a study of 50,000 children over 24 years.

OBJECTIVE: To compare the incidence and outcomes of myringotomy plus ventilation tube insertion (MVTI) alone and that concurrent with pharyngeal surgery (adenoidectomy, adenotonsillectomy, or tonsillectomy) at a population level. STUDY DESIGN: Observational, retrospective, population-based study using hospital administrative data. METHODS: All hospital morbidity information was obtained for children who underwent a first MVTI procedure while less than 10 years of age in any Western Australian hospital from 1981 to 2004. Further MVTI procedures and additional pharyngeal surgery were subsequently identified for each child. RESULTS: There were 51,373 children less than 10 years of age who underwent at least one MVTI procedure from 1981 to 2004. Twenty-nine percent underwent pharyngeal surgery at the time of first MVTI procedure, and of these, 7.4% (1,096) had pharyngeal surgery in the absence of adenoid or tonsil disease. Adenoid surgery at time of MVTI was associated with reduced odds of subsequent MVTI procedures in children with or without adenoid/tonsil disease. In more recent calendar periods, no differences in the length of hospital stay between MVTI alone and with adenoidectomy was observed, whereas procedures involving tonsils required an additional bed day per procedure and were associated with more episodes of operative and postoperative hemorrhage. CONCLUSION: Having adenoidectomy or adenotonsillectomy surgery at time of first or subsequent MVTI was associated with reduced risk of further MVTI surgery. The low complication rates for adenoidectomy and short hospital stays make adjunctive adenoidectomy a potentially cost-effective first line management option for otitis media with effusion.

Decreasing rates of middle ear surgery in Western Australian children.

OBJECTIVE: To investigate temporal, social, demographic, and health care utilization factors associated with myringotomy with ventilation tube insertion (MVTI) in Western Australian (WA) children. DESIGN: Observational retrospective population-based cohort study using hospital administrative data. SETTING: All WA hospitals. PARTICIPANTS: A total of 53 673 children younger than 15 years who underwent surgery for MVTI in the period 1981-2004. MAIN OUTCOME MEASURES: Age-specific incidence rates and incidence rate ratios. RESULTS: The rate of MVTI in children younger than 15 years peaked in 1997 at 6.7 per 1000 person-years and decreased to 5.6 per 1000 person-years by 2004. Based on 2004 rates, 8.4% of WA children will undergo at least 1 MVTI procedure before reaching age 15 years. The rate of MVTI was 37% lower in Indigenous children, and the procedures were performed at an older age compared with non-Indigenous children. Higher rates of MVTI were associated with areas of higher economic resources, lower education and occupation status, and living in metropolitan areas. CONCLUSIONS: The rate of MVTI in WA is showing evidence of a decline, even among children younger than 5 years. There remains an issue regarding equity of access to care for Indigenous children. Increasing parental economic resources may be associated with higher rates of MVTI independent of educational status.