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Retrograde lacrimal duct airflow during nasal positive pressure ventilation

Stephanie Zandieh1, Eliot S Katz

  • 1Division of Respiratory Diseases, Children's Hospital Boston, Boston, MA 02115, USA.

Journal of Clinical Sleep Medicine : JCSM : Official Publication of the American Academy of Sleep Medicine
|January 6, 2011
PubMed

Insights

Noninvasive ventilation for pediatric neuromuscular disorders can cause eye irritation due to retrograde airflow. This case highlights nasolacrimal duct issues complicating bilevel ventilation in children.

Area of Science:

  • Pediatric Pulmonology
  • Biomedical Engineering
  • Ophthalmology

Background:

  • Noninvasive ventilation (NIV) is crucial for managing chronic respiratory failure in children with neuromuscular disorders, often preventing tracheostomy.
  • Higher pressures used in NIV for these conditions may increase risks compared to treating obstructive sleep apnea.
  • Common NIV complications include skin breakdown, conjunctivitis, and nasal issues, frequently linked to mask air leaks.

Observation:

  • A 14-month-old boy with profound hypotonia and chronic respiratory failure experienced sleep disruption and eye irritation during bilevel ventilation.
  • Ophthalmologic complaints were prominent, suggesting a link to mask air leaks.
  • The patient presented with significant eye irritation and disrupted sleep while on nocturnal bilevel support.

Findings:

  • Video and CT scan imaging revealed retrograde airflow through the nasolacrimal duct as the cause of the patient's symptoms.
  • This airflow pathway led to sleep disruption and persistent eye irritation.
  • The nasolacrimal duct acted as an unintended conduit for positive airway pressure during sleep.

Implications:

  • This case identifies retrograde nasolacrimal duct airflow as a novel complication of bilevel ventilation in pediatric patients.
  • Understanding this mechanism is vital for managing and preventing eye irritation and sleep disturbance in children on NIV.
  • Further research into mask fitting and airflow dynamics is needed to mitigate such complications in pediatric respiratory support.

Keywords:
Neuromuscular disorderbilevel positive pressurecontinuous positive airway pressurepediatrics

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