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Clinical and ultrastructural correlations in nasal mucociliary function observed in children with recurrent airways

M Armengot1, A Escribano, C Carda

  • 1ENT Department, Valencia University General Hospital, Spain.

International Journal of Pediatric Otorhinolaryngology
|May 1, 1995
PubMed

Insights

Recurrent airway infections in children can indicate impaired nasal mucociliary transport (NMT). While NMT can normalize over time, persistent alterations are linked to more severe symptoms and ciliary abnormalities.

Area of Science:

  • Pediatric Pulmonology
  • Respiratory Physiology
  • Cilia Biology

Background:

  • Recurrent upper and lower airway infections are common in children.
  • Nasal mucociliary transport (NMT) is crucial for airway clearance.
  • Understanding NMT dysfunction is key to managing pediatric respiratory illnesses.

Purpose of the Study:

  • To investigate nasal mucociliary transport (NMT) velocity in children with recurrent airway infections.
  • To assess the reversibility of NMT alterations over time.
  • To correlate NMT status with clinical outcomes and ciliary ultrastructure.

Main Methods:

  • Nasal mucociliary transport (NMT) velocity was measured in 106 children (ages 1-15) using the Tc99m-labeled seroalbumin technique.
  • NMT was reassessed in 42 children with initial alterations after 1-2 years.
  • Ciliary ultrastructure was examined in affected patients.

Main Results:

  • Altered NMT was found in 42 children; 55% normalized, while 45% remained altered.
  • Persistent NMT alterations correlated with increased frequency of recurrent pneumonia and constant rhinorrhea.
  • Ciliary pathology included absent dynein arms, microtubule defects, and occasional absence of cilia, even in children with normal NMT.

Conclusions:

  • Impaired nasal mucociliary transport (NMT) is a significant factor in recurrent pediatric airway infections.
  • NMT dysfunction can be dynamic, with potential for normalization, but persistent issues indicate underlying pathology.
  • Ciliary ultrastructural defects are associated with NMT impairment, though normal cilia can be found alongside persistent transport issues.

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