Nasal cannula use during polysomnography in children aged under three with suspected sleep apnea

Area of Science:

• Pediatric Pulmonology
• Sleep Medicine
• Diagnostic Accuracy

Background:

• Early diagnosis of obstructive sleep apnea (OSA) is crucial for children's health.
• The efficacy of nasal cannulas as airflow sensors in polysomnography for infants and toddlers is not well-established.
• Assessing respiratory events in children under three with suspected OSA requires reliable diagnostic tools.

Purpose of the Study:

• To evaluate the diagnostic performance of a nasal cannula in detecting respiratory events in children under three years old with suspected OSA during daytime polysomnography.
• To compare the accuracy of nasal cannula airflow sensing with a thermistor for diagnosing OSA in young children.
• To determine the reliability of nasal cannulas for calculating the apnea-hypopnea index in this pediatric population.

Main Methods:

• Prospective study including 185 children with suspected OSA.
• Respiratory events were scored using nasal cannula alone, thermistor alone, and both simultaneously.
• Agreement and diagnostic accuracy were assessed by comparing the nasal cannula to the thermistor.

Main Results:

• The nasal cannula showed significantly longer periods of uninterpretable signals (17.8% vs 1.9%) compared to the thermistor.
• Diagnostic accuracy was lower for the nasal cannula, with reduced sensitivity (82.7% vs 95.5%) and negative predictive value (76.5% vs 92.4%) for OSA detection.
• Fewer children were diagnosed with severe OSA using the nasal cannula (19.8%) compared to the thermistor (30.8%).

Conclusions:

• Nasal cannulas demonstrate limited ability to accurately detect obstructive events in children under three years of age.
• The use of nasal cannulas alone may lead to underdiagnosis of OSA in this vulnerable population.
• Further research into alternative non-invasive methods for respiratory event detection in infants and toddlers is warranted.