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[An analysis of tympanometry in 0-1 year old infants]
Yan Li1, Runjin Wen, Xiaoya Wang
1Department of Otorhinolaryngology, Guangzhou Women and Children's Medical Center, Guangzhou, 510120, China.
Insights
This study compared 226 Hz and 1000 Hz tympanometry for infant middle ear function. The 1000 Hz probe tone tympanometry demonstrated superior sensitivity and specificity in assessing infant hearing.
Area of Science:
- Pediatric audiology
- Otoacoustic emissions
- Infant hearing assessment
Context:
- Middle ear function assessment in infants is crucial for early detection of hearing impairments.
- Traditional tympanometry using 226 Hz probe tones has limitations in this age group.
- Higher frequency probe tones may offer improved diagnostic accuracy.
Purpose:
- To evaluate and compare the diagnostic performance of 226 Hz and 1000 Hz tympanometry in infants aged 0-1 year.
- To determine the sensitivity and specificity of each probe tone frequency for middle ear function assessment.
Summary:
- Tympanometric data were collected from 150 infants (0-1 year) using 226 Hz and 1000 Hz probe tones.
- Results indicated that 1000 Hz tympanometry showed a higher percentage of normal findings in healthy ears and fewer abnormal findings in abnormal ears compared to 226 Hz.
- The 1000 Hz probe tone exhibited better sensitivity and specificity for identifying middle ear function abnormalities.
Impact:
- The findings suggest that 1000 Hz tympanometry is a more effective tool for assessing middle ear function in infants.
- This improved diagnostic capability can lead to earlier and more accurate identification of hearing issues in early childhood.
- Clinical guidelines for infant hearing screening may benefit from incorporating higher frequency tympanometry.
Objective:
To study the characteristics of infants middle ear function of children (0-1 year old) with 226 Hz, 1000 Hz tympanometry.
Method:
Tympanometric data using 226 Hz, 1 000 Hz probe tones were gained from 150 children (300 ears) aged 0-1 year old with a GSI tympstar middle ear analyzer. All of them were term birth, divided into 5 groups of 30 patients, the neonatal period (0-28 days), 6 weeks (+/- 3 days), 3 months (+/- 6 d), 6 months (+/- 6 days), 7-12 months. To analyse the middle ear function of children with 226 Hz, 1000 Hz tympanometric data.
Result:
226 Hz,1000 Hz probe tone tympanometric data were normal for the normal group, which respectively were: 76.7%, 80%, 86.7%, 90%, 93.3%. 226 Hz, 1000 Hz detection tympanometric data were not sound normal to abnormal group, the proportion in each group were: 13.3%, 8.3%, 5.0%, 3.3%, 1.6%. The contradiction between the two groups were divided into two subgroups: 226 Hz normal, 1000 Hz unusual in the proportion of each group were 6.7%, 6.7%, 5.0%, 3.3%, 1.6%; 1000 Hz normal, 226 Hz unusual in the proportion of each group were 5.0%, 5.0%, 3.3%, 3.3%, 3.3%.
Conclusion:
The sensitivity and specificity of the 1000 Hz probe tone tympanometry was better.
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