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Predicting the development and outcome of otitis media by tympanometry
Arto Palmu1, Heikki Puhakka, Tapani Rahko
1National Public Health Institute, Mannerheimintie 166, FIN-00300 Helsinki, Finland. aapalmu@tays.fi
Insights
Negative tympanometric pressure in children indicates a higher risk for developing otitis media. Close monitoring is recommended for these children to manage respiratory infections and prevent ear disease progression.
Area of Science:
- Pediatrics
- Otolaryngology
- Diagnostic Imaging
Background:
- Otitis media is a common childhood illness.
- Early identification of children at high risk for otitis media is crucial for effective clinical management.
- Tympanometry is a non-invasive tool used to assess middle ear function.
Purpose of the Study:
- To evaluate the predictive capability of tympanometry for the development and resolution of acute otitis media (AOM) in children.
- To identify children at high risk for developing or prolonging otitis media.
Main Methods:
- A cohort of 329 children aged 2-24 months was followed longitudinally.
- Tympanometry was performed routinely during clinic visits.
- Analysis of adjacent visits assessed the development and resolution of middle ear fluid (MEF).
Main Results:
- Negative tympanometric peak pressure (<-100 daPa) significantly predicted the development of otitis media during respiratory infections (OR 4.8).
- Children with negative pressure were more likely to develop otitis media within 20 days.
- The prediction of poor outcome for AOM resolution using tympanometry was inconclusive.
Conclusions:
- Profound negative tympanometric peak pressure is a significant risk marker for otitis media development.
- Children exhibiting negative pressure require close monitoring for respiratory illness progression and potential otitis media.
- Tympanometry's role in predicting AOM resolution requires further investigation.
Objective:
Identification of children with high risk of development or prolongation of otitis media would be highly useful in clinical practice. In this study, tympanometry was assessed for its capability in predicting development and resolution of acute otitis media (AOM).
Methods:
Visits of 329 children followed in the Finnish Otitis Media Cohort Study from 2 to 24 months of age were evaluated for this report. Tympanometry was routinely performed on all children during their visits to a special study clinic. Adjacent consecutive visits were used for analysis of development and resolution of middle ear fluid (MEF) between the visits. Descriptive analysis utilized all data obtained during the longitudinal follow-up; confirmatory statistical analysis was performed on data of one randomly selected visit per subject to ensure independence of observations. Presence of MEF at the second visit was used as the outcome.
Results:
Negative tympanometric peak pressure (<-100 daPa) was found to predict the development of otitis media when observed during respiratory infection with no concomitant ear disease. Otitis media developed within 20 days to 40% of children with negative pressure compared with 20% of children without negative pressure. The observed association was confirmed statistically (odds ratio 4.8, 95% confidence interval 2.4-9.6). Poor outcome of AOM at the subsequent follow-up visit 3-5 weeks later was found in 9% of ears with negative pressure tympanogram compared with 24% with initial type B or normal pressure tympanogram during AOM. However, we could not confirm the finding in statistical analysis (odds ratio 0.6, 95% confidence interval 0.2-2.0).
Conclusions:
Profound negative tympanometric peak pressure is a significant marker of increased risk for development of otitis media. Children with negative pressure have to be thoroughly followed for subsequent progress of the respiratory disease and development of otitis media. For the prediction of resolution of AOM, the findings remained inconclusive.