Related Experiment Video
Updated: Sep 2, 2026

Surgical Induction of Endolymphatic Hydrops by Obliteration of the Endolymphatic Duct
Published on: January 23, 2010
Eustachian tube function. Children with otitis media
Insights
This study found that measuring eustachian tube function in children with middle ear disease using an impedance bridge has a weak correlation with other disease indicators. Therefore, this method offers limited value in assessing the condition.
Area of Science:
- Otolaryngology
- Pediatric Medicine
- Audiology
Background:
- Otitis media with effusion (OME) is common in children.
- Eustachian tube dysfunction is implicated in OME.
- Pressure-equalization tubes are used to manage persistent OME.
Purpose of the Study:
- To investigate the correlation between eustachian tube function and indicators of middle ear disease in children.
- To assess the utility of impedance bridge measurements for evaluating eustachian tube function in this population.
Main Methods:
- Twenty-four children with persistent OME and pressure-equalization tubes participated.
- Eustachian tube function was measured using the pressure system of an impedance bridge.
- Five functional measurements were correlated with patient age and six disease indices.
Main Results:
- The highest multiple correlation squared was 0.27, explaining only 27% of the variability in results.
- This indicates a low correlation between the measured tubal function and other disease indicators.
- No significant predictive value was found for the assessed tubal function measurements.
Conclusions:
- Current impedance bridge techniques for measuring eustachian tube function have limited clinical utility in children with OME.
- Further research is needed to develop more accurate methods for assessing eustachian tube function in pediatric otitis media.
Abstract:
The relationship between middle ear disease and eustachian tube function was studied in 24 children with persistent otitis media with effusion and with pressure-equalization tubes in place using the pressure system of an impedance bridge. Five measurements of function were correlated with a child's age and six indexes of disease. The highest multiple correlation squared accounted for only 27% of the variability in results, indicating that knowledge of tubal function by this technique has little useful correlation with other indicators of disease.
Related Concept Videos
The Cochlea
The Auditory Ossicles
The aptly named stapes look very much like a stirrup. The three ossicles are unique to mammals, and each plays a role in...
Anatomy of the Ear
Auditory Pathway
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking the...
Tracheostomy: Procedure and Tubes
Tracheostomy tubes can be made of semiflexible plastic (polyurethane or silicone), rigid plastic, or metal, and they come in...
Endotracheal Intubation I: Procedure
The ET tube comprises various components, including a standard adaptor to attach a bag-valve-mask (BVM) or ventilator, a cuff, a pilot balloon, and radiopaque markings along its length to measure the insertion distance. The tube sizes...

