Eustachian tube function in young children without a history of otitis media evaluated using a pressure chamber
John Douglas Swarts1, Margaretha L Casselbrant, Miriam S Teixeira
1Department of Otolaryngology, Division of Pediatric Otolaryngology, Children's Hospital of Pittsburgh of UPMC, University of Pittsburgh School of Medicine , Pittsburgh, PA , USA.
Insights
Eustachian tube opening efficiency in children aged 3-6 years was not significantly different across age groups. However, left ears and positive pressure gradients showed higher percent gradient equilibrated (PGE).
Area of Science:
- Otolaryngology
- Pediatric Audiology
- Physiology
Background:
- Eustachian tube dysfunction is common in children and can lead to middle ear disease.
- Understanding age-related changes in eustachian tube function is crucial for diagnosing and managing otitis media.
- Previous studies have explored various methods to assess eustachian tube function, but data on normative age-related changes in children without a history of ear disease is limited.
Purpose of the Study:
- To characterize age-related changes in eustachian tube opening efficiency in children.
- To evaluate the impact of driving gradient direction and ear laterality on eustachian tube function.
- To establish normative data for eustachian tube opening efficiency in a pediatric population.
Main Methods:
- A longitudinal study enrolled 41 children aged 3 years without a history of otitis media.
- Eustachian tube opening efficiency, measured as percent gradient equilibrated (PGE), was assessed annually via tympanometry during a pressure chamber protocol.
- Data from 120 tests were analyzed using ANOVA, partitioning variance by age (3-6 years), gradient direction (positive/negative), and ear (left/right).
Main Results:
- Percent gradient equilibrated (PGE) was higher for left ears compared to right ears.
- Positive driving gradients resulted in higher PGE compared to negative gradients.
- No significant differences in PGE were observed among the age groups studied (3 through 6 years).
Conclusions:
- While age did not significantly impact eustachian tube opening efficiency in this cohort, driving gradient direction and ear laterality were influential factors.
- Protocol limitations were identified and accounted for in the analysis.
- Further analysis with more sophisticated statistical models on the complete dataset is expected to provide finer resolution of potential age-related changes.
Conclusions:
Protocol limitations were identified and accounted for in the analysis. Percent gradient equilibrated (PGE) was affected by driving gradient direction in a similar manner to other efficiency measures. A finer resolution of possible age-related changes in eustachian tube opening efficiency is expected with the application of more sophisticated statistical models to the complete dataset at study end.
Objective:
To report the results of an interim analysis for an ongoing study designed to characterize the age-related changes in eustachian tube opening efficiency measured using a pressure chamber protocol in children without a history of middle ear disease.
Methods:
To date, 41 children aged 3 years without a history of otitis media have been enrolled in a longitudinal study of the age-related changes in eustachian tube function and evaluated at yearly intervals between 3 and 7 years of age. Eustachian tube opening efficiency, the percent of the applied pressure gradient equilibrated by swallowing, was measured by repeat tympanometry during a pressure chamber protocol. Data (120 tests) were analyzed using an ANOVA with variance partitioned by age (3 through 6 years), gradient direction (positive/negative), and ear (left/right).
Results:
PGE was higher for left ears and positive driving gradients, but was not different among age groups.
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