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Updated: Apr 16, 2026

Simultaneous Laryngopharyngeal and Conventional Esophageal pH Monitoring
Published on: December 14, 2020
Diagnosis of extraesophageal reflux in children with chronic otitis media with effusion using Peptest
Martin Formánek1, Karol Zeleník1, Pavel Komínek1
1Department of Otorhinolaryngology, University Hospital Ostrava, 17, listopadu 1790, 70852 Ostrava, Czech Republic; Faculty of Medicine University of Ostrava, Syllabova 19, 703 00 Ostrava, Czech Republic.
Insights
Peptest accurately detected pepsin in one-third of middle ear fluid samples from children with otitis media with effusion (OME). This suggests a potential diagnostic role for extraesophageal reflux (EER) in OME patients.
Area of Science:
- Otolaryngology
- Pediatric medicine
- Gastroenterology
Background:
- Chronic otitis media with effusion (OME) is common in children.
- Extraesophageal reflux (EER) is a potential contributing factor to OME.
- Accurate diagnosis of EER in this population remains challenging.
Purpose of the Study:
- To evaluate the utility of Peptest, a pepsin detection immunoassay, for diagnosing EER in children with OME.
- To compare Peptest results with previous findings.
Main Methods:
- A prospective study included children aged 1-7 years diagnosed with OME undergoing myringotomy.
- Middle ear fluid was collected during myringotomy and analyzed for pepsin using Peptest.
- Pepsin presence indicated potential EER.
Main Results:
- Pepsin was detected in 31.8% of middle ear fluid samples (14/44 children).
- Pepsin was found in 32.2% of middle ear specimens (19/59).
- Detection rates varied between serous (34.4%) and mucous (22.2%) samples.
Conclusions:
- Pepsin was detected in approximately one-third of middle ear specimens from OME patients.
- These findings suggest a potential link between EER and OME severity.
- Further studies are needed to confirm the role of antireflux therapy in these patients.
Introduction:
The aim of the study was to investigate whether Peptest, an immunoassay used to detect pepsin, could be used to diagnose extraesophageal reflux (EER) in children with chronic otitis media with effusion (OME). The results obtained using this fast, simple and non-expensive method were compared with the results of previous studies.
Methods:
Children 1-7 years old who had been diagnosed with OME and who were undergoing myringotomy with insertion of a ventilation tube were included in the prospective study. Middle ear fluid obtained during myringotomy was analyzed with Peptest to determine the presence of pepsin, and hence EER.
Results:
Bilateral and unilateral myringotomy was performed in 15/44 (34.1%) and 29/44 (65.9%) children, respectively. Pepsin in the middle ear was detected in 14/44 (31.8%) children and in 19/59 (32.2%) middle ear specimens. Serous and mucous samples were positive for pepsin in 11/32 (34.4%) and 6/27 (22.2%) cases, respectively. Pepsin in the middle ear was detected in 3/7 children (42.9%) with bronchial asthma (p=0.662).
Conclusions:
Pepsin was detected in 1/3 of middle ear specimens of patients with OME. These patients probably suffer from more severe reflux and therefore would be potential candidates for antireflux therapy. However, this has to be confirmed in further studies.
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