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Validity of tympanometry in the diagnosis of middle ear effusion
M L Sassen1, A van Aarem, J J Grote
1Department of Otorinolaryngology, University Hospital Leiden, The Netherlands.
Insights
Tympanometry is a valid tool for diagnosing middle ear effusion in children aged 5 months to 11 years, performing similarly across different age groups and tympanometer devices. Otoscopy showed limited diagnostic value in this pediatric population.
Area of Science:
- Pediatric Otolaryngology
- Diagnostic Audiology
Background:
- Middle ear effusion (MEE) is common in children, often leading to hearing loss and speech delays.
- Accurate diagnosis of MEE is crucial for timely intervention, including ventilation tube insertion or adenoidectomy/tonsillectomy.
- Otoscopy is frequently used but its diagnostic accuracy for MEE in young children is debated.
Purpose of the Study:
- To evaluate the diagnostic validity and performance of tympanometry in a pediatric population undergoing middle ear surgery.
- To compare the effectiveness of two different tympanometer devices (GSI-27A and TYMP-85TT).
- To assess the diagnostic utility of tympanometry across different pediatric age subgroups and compare it with otoscopy findings.
Main Methods:
- A cohort of 266 children (515 ears), aged 5 months to 11 years, scheduled for middle ear surgery were prospectively studied.
- Tympanometry was performed pre-operatively using two distinct devices: GSI-27A and TYMP-85TT.
- Surgical findings were compared with tympanometric results to determine sensitivity and specificity; otoscopy findings were also analyzed.
Main Results:
- Both tympanometer devices demonstrated comparable validity in assessing middle ear status.
- Tympanometry exhibited similar sensitivity and specificity in younger children (5 months to 2 years) compared to older children (2-12 years).
- Otoscopy revealed limited diagnostic value for identifying middle ear effusion in the studied pediatric age range.
Conclusions:
- Tympanometry is a reliable and valid diagnostic tool for middle ear effusion in children across a wide age spectrum.
- The choice between the GSI-27A and TYMP-85TT tympanometers does not significantly impact diagnostic accuracy for MEE in this population.
- Otoscopy alone is insufficient for the accurate diagnosis of middle ear effusion in young children, highlighting the importance of tympanometry.
Abstract:
A group of 266 children (515 ears), ranging in age from 5 months to 11 years, was studied. These children were candidates for the insertion of ventilation tubes, or adenoidectomy and/or tonsillectomy with myringotomy. Before surgery, tympanometry was performed. The surgical and tympanometric findings were compared afterwards. Two different tympanometers were used (GSI-27A and TYMP-85TT). This study showed a comparable validity of these two tympanometers. The sensitivity and specificity of tympanometry in the age group of 5 months to 2 years did not show a significant difference from that in the age group of 2-12 years. Otoscopy has limited value for the diagnosis of middle ear effusion in this age group.