Nasopharyngeal vs. adenoid cultures in children undergoing adenoidectomy: prevalence of bacterial pathogens, their...

Area of Science:

• Microbiology
• Pediatrics
• Otolaryngology

Background:

• Recurrent upper respiratory tract infections (URTIs) are common in preschool children.
• Adenoidectomy is a common surgical procedure for recurrent URTIs.
• Understanding microbial colonization patterns is crucial for managing URTIs.

Purpose of the Study:

• To investigate the colonization patterns of key bacteria in the adenoids and nasopharynx of children undergoing adenoidectomy.
• To analyze bacterial interactions and identify risk factors for colonization at these sites.
• To determine if nasopharyngeal colonization predicts URTIs.

Main Methods:

• Analyzed bacterial colonization (Streptococcus pneumoniae, Haemophilus influenzae, Moraxella catarrhalis, Staphylococcus aureus) in adenoids and nasopharynx.
• Studied 103 preschool children undergoing adenoidectomy for recurrent URTIs.
• Employed statistical analysis for bacterial interactions and risk factors.

Main Results:

• High prevalence of simultaneous bacterial isolation from both adenoids and nasopharynx.
• Adenoid samples showed significantly more frequent co-occurrence of multiple pathogens compared to nasopharyngeal swabs.
• Specific bacterial associations (e.g., S. pneumoniae and H. influenzae in adenoids) were observed.
• Distinct risk factors for adenoid vs. nasopharyngeal colonization were identified.

Conclusions:

• Adenoids and nasopharynx exhibit significant differences in pathogenic microbial colonization.
• Nasopharyngeal presence of Haemophilus influenzae and Streptococcus pneumoniae may predict recurrent upper respiratory tract infections.