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[Distortion product otoacoustic emissions results in children with middle ear effusion]
Fadlullah Aksoy1, Yavuz Selim Yildirim, Bayram Veyseller
1Department of Otolaryngology, Haseki Training and Research Hospital, Istanbul, Turkey.
Insights
Distortion product otoacoustic emissions (DPOAE) testing effectively assesses middle-ear effusion in children. Post-ventilation tube insertion, DPOAE results significantly improve, indicating restored middle-ear function.
Area of Science:
- Otoacoustic Emissions
- Pediatric Otolaryngology
- Hearing Diagnostics
Context:
- Middle-ear effusion (MEE) is common in children, impacting hearing.
- Accurate assessment of MEE and its resolution is crucial for auditory development.
- Distortion product otoacoustic emissions (DPOAE) offer a non-invasive measure of cochlear outer hair cell function.
Purpose:
- To evaluate the diagnostic role of DPOAE in children with MEE.
- To compare DPOAE results before and after ventilation tube insertion.
- To assess the recovery of cochlear function following MEE treatment.
Summary:
- A prospective study involved 30 children (41 ears) with MEE and a control group (15 volunteers, 30 ears).
- Preoperatively, 80% of MEE ears showed absent DPOAE. Postoperatively (4 weeks), 92.6% demonstrated normal DPOAE.
- Control ears consistently showed normal DPOAE (96.7%).
Impact:
- DPOAE is a valuable tool for monitoring MEE resolution and hearing status in pediatric patients.
- Ventilation tube insertion significantly improves DPOAE results, confirming improved middle-ear conditions.
- Findings support the use of DPOAE in audiological management of pediatric otitis media.
Objectives:
To evaluate the role of distortion product otoacoustic emissions (DPOAE) results in children with middle-ear effusion before and after ventilation tube insertion.
Patients And Methods:
The study was conducted between the September 2007 and May 2008 at the Otolaryngology Clinic diagnosed with middle-ear effusion. A prospective study was carried out 30 patient (18 males, 12 females; mean age 8.6 years; range 6 to 15 years) and a total of 41 ears with middle-ear effusion. A total of 30 ears of 15 volunteers healthy control group (8 males, 7 females; mean age 7.8 years; range 5 to 15) included in the study. All children listed for appropriate surgery had a pre- and postoperative (four week after) tympanometry, pure tone audiometry and DPOAE recorded. A comparison was made between control group DPOAE value and pre- and postoperative DPOAE value of patient.
Results:
Preoperatively, 41 ears had an abnormal tympanometry of which 80% had absent DPOAE. After four week all postoperative patients with surgery had 92.6% a normal DPOAE. Control group of 29/30 ears had a normal (96.7%) DPOAE.
Conclusion:
Patients with otitis media with effusion measured preoperative DPOAE, postoperative after one month all patients with grommets had a more DPOAE value comparison with preoperative, but less for control group.
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