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Updated: Aug 16, 2026

Simultaneous Laryngopharyngeal and Conventional Esophageal pH Monitoring
Published on: December 14, 2020
Association of reflux with otitis media in children
Judith E C Lieu1, P Ganesh Muthappan, Ravindra Uppaluri
1Department of Otolaryngology--Head and Neck Surgery, Washington University School of Medicine, St. Louis, MO 63110, USA. lieuj@ent.wustl.edu
Insights
Pepsin/pepsinogen was found in middle ear fluid of children with otitis media with effusion (OME) or recurrent otitis media (ROM). However, increased gastroesophageal reflux (GER) symptoms were not observed in these children.
Area of Science:
- Otolaryngology
- Pediatrics
- Gastroenterology
Background:
- Otitis media with effusion (OME) and recurrent otitis media (ROM) are common in children.
- Gastroesophageal reflux (GER) has been hypothesized as a potential contributing factor to OME/ROM.
- Previous studies suggested the presence of pepsin/pepsinogen in middle ear effusions.
Purpose of the Study:
- To confirm the presence of pepsin/pepsinogen in middle ear fluid of children diagnosed with OME or ROM.
- To investigate the association between GER symptoms and OME/ROM in pediatric patients.
- To further explore the potential link between GER and otitis media.
Main Methods:
- Middle ear fluid samples were collected from pediatric patients undergoing tympanostomy tube insertion.
- Pepsin/pepsinogen levels in the collected fluid were quantified using a proteolytic enzyme assay and ELISA.
- Parental questionnaires were utilized to assess the prevalence and severity of GER symptoms in the children.
Main Results:
- Pepsin/pepsinogen was detected in a high percentage of middle ear fluid samples (73% by proteolytic assay, 77% by ELISA).
- Despite the presence of pepsin/pepsinogen, parental reports did not indicate an increased frequency or severity of GER symptoms.
- No significant correlation was found between GER symptoms and the presence of pepsin/pepsinogen in middle ear fluid.
Conclusions:
- The study successfully replicated the finding of pepsin/pepsinogen in middle ear effusions of children with OME/ROM.
- The absence of increased GER symptoms in this cohort suggests that GER may not be a primary driver for OME/ROM in all cases.
- Further research is warranted to elucidate the precise relationship between GER and otitis media and to establish any potential causative links.
Objectives:
To confirm the finding of pepsin/pepsinogen in middle ear fluid of children with chronic or recurrent otitis media (OME or ROM), and to ask parents about symptoms associated with gastroesophageal reflux (GER).
Methods:
Middle ear fluid was collected from children undergoing tympanostomy tube placement. We tested this fluid for pepsin/pepsinogen using a proteolytic enzyme assay and an ELISA. Parents completed questionnaires about symptoms of GER in their children.
Results:
We collected 36 samples from 22 children; 16 of 22 children (73%) were positive with the proteolytic assay; 17 (77%) were positive with ELISA. Questionnaires did not show increased GER symptoms.
Conclusions:
We replicated the finding of pepsin/pepsinogen in middle ear fluid of children with OME or ROM, but did not find any increase in GER symptoms. Further research is needed to establish a causative link between GER and OM.
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