Nasal Allergy and Otitis Media: A real correlation?

Area of Science:

• Pediatric Otolaryngology
• Allergy and Immunology
• Pediatric Respiratory Medicine

Background:

• The link between middle ear pathology and nasal allergies has been a long-standing debate.
• Otitis media with effusion (OME) is a common pediatric condition, and allergic rhinitis affects a significant portion of children.
• Understanding the interplay between these conditions is crucial for effective diagnosis and management.

Purpose of the Study:

• To investigate the relationship between otitis media with effusion (OME) and persistent allergic rhinitis symptoms compared to intermittent rhinitis in children.
• To evaluate specific clinical and immunological markers associated with OME in children with allergic rhinitis.

Main Methods:

• A cohort of 100 atopic children aged 5-9 years with otological symptoms underwent comprehensive ear, nose, and throat evaluations.
• Diagnostic tools included tympanometry, skin prick tests (SPTs) for allergens, mucociliary transport time (MCTt) measurements, and Eustachian tube function tests.
• Middle ear effusion analysis included eosinophil cationic protein (ECP) levels.

Main Results:

• Skin prick tests identified sensitization to common allergens like Dermatophagoides pteronyssinus, grass pollen, and Parietaria.
• A significant proportion of children experienced moderate to severe symptoms, with a notable number having persistent rhinitis.
• Delayed mucociliary transport time (MCTt) was observed in children with persistent rhinitis (21 ± 2 mins) compared to intermittent rhinitis (16 ± 2 mins) (P <0.01).
• Middle ear effusion was present in 45 children, and significantly elevated eosinophil cationic protein (ECP) levels were found in middle ear effusions (251 ± 175.2 μg/L) and blood (25.5 ± 16.3 μg/L) (P < 0.001).

Conclusions:

• A significant association exists between otitis media with effusion (OME), delayed mucociliary transport time, and elevated eosinophil cationic protein (ECP) levels in middle ear effusions of children with persistent allergic rhinitis.
• These findings suggest that the middle ear mucosa may act as a direct target organ in the pathophysiology of persistent allergic rhinitis in children.