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Temporal bone pneumatization in cystic fibrosis patients
1Division of Otolaryngology, Emory University, Atlanta, GA.
The Laryngoscope
|October 1, 1988
Summary
Cystic fibrosis (CF) patients show surprisingly lower rates of otitis media, despite common sinus issues. This suggests a potential genetic link and challenges the idea that poor mucus clearance directly causes ear infections in CF.
Area of Science:
- Otolaryngology
- Genetics
- Pulmonology
Background:
- Nasal polyps and sinusitis are common in cystic fibrosis (CF) patients.
- Otitis media (middle ear infection) is unexpectedly infrequent in CF.
- This study investigates the prevalence of otitis media in CF patients.
Purpose of the Study:
- To determine if CF patients have a lower incidence of otitis media compared to the general population.
- To explore potential genetic links between CF and Eustachian tube function.
- To assess the role of impaired mucociliary transport in otitis media development within CF.
Main Methods:
- Computed tomography (CT) scans of temporal bones were analyzed.
- Temporal bone pneumatization volume was measured as an indicator of childhood otitis.
- CT scans were performed on 20 CF patients (ages 13-26) undergoing evaluation for sinusitis.
Main Results:
- CF patients exhibited significantly larger average temporal bone pneumatization volumes than the normal population (p=0.033).
- Only one of the 20 CF patients reported a history of otitis media.
- The findings indicate a lower prevalence of otitis media in this CF cohort.
Conclusions:
- Cystic fibrosis patients appear to have a reduced incidence of otitis media.
- A potential genetic linkage between the cystic fibrosis gene and Eustachian tube development is suggested.
- Impaired mucociliary transport in CF may not be a direct cause of otitis media.