Immunodeficiencies in children with chronic post tympanic otorrhoea

Area of Science:

• Pediatric Otolaryngology
• Immunology

Background:

• A subset of children with ventilation tubes develop chronic otorrhoea.
• This study investigated if primary immunodeficiency underlies this persistent condition.

Purpose of the Study:

• To test the hypothesis that primary immunodeficiency may cause chronic otorrhoea in children.
• To assess the immunological status of children with longstanding, therapy-resistant otorrhoea.

Main Methods:

• Included 18 children with otorrhoea for ≥6 months unresponsive to therapy.
• Performed ear cleansing, ventilation tube removal, and collected swabs and blood for analysis.
• Conducted microbiological and immunological assessments.

Main Results:

• Only 1 of 18 children had a normal immune status.
• Identified isolated humoral deficiencies (5 children), isolated cellular deficiencies (4 children), and combined defects (8 children).
• Humoral defects included IgA, IgG subclass, and MBL deficiencies; cellular defects involved T cells and NK cells.

Conclusions:

• Primary immunodeficiencies are highly prevalent in children with chronic, refractory post-tympanic otorrhoea.
• Consider primary immunodeficiency in cases of chronic otorrhoea.
• Monitoring serostatus is crucial for prognosis.