Recognition of sleep-disordered breathing in children

Area of Science:

• Pediatric Sleep Medicine
• Respiratory Physiology
• Diagnostic Methods in Sleep Disorders

Background:

• Upper airway resistance syndrome (UARS) and obstructive sleep apnea syndrome (OSAS) are distinct sleep-disordered breathing conditions in children.
• Distinguishing UARS from OSAS can be challenging using standard clinical evaluations.
• Accurate diagnosis is crucial for managing associated day and nighttime disturbances.

Purpose of the Study:

• To evaluate the clinical distinguishability of UARS from OSAS in prepubertal children.
• To compare the efficacy of esophageal pressure (Pes) monitoring, transcutaneous carbon dioxide pressure (tcPCO2), and expired carbon dioxide (CO2) measurements in identifying UARS.

Main Methods:

• Retrospective analysis of sleep-disordered breathing cases in children aged 12 and younger.
• Comparison of clinical findings, orocraniofacial scales, and nocturnal polygraphic recordings.
• Second-night polysomnography with Pes monitoring, tcPCO2, and expired CO2 measurements in a subgroup.

Main Results:

• Clinical symptoms and orocraniofacial features were not sufficient to differentiate UARS from OSAS.
• Esophageal pressure (Pes) monitoring, tcPCO2, and expired CO2 showed agreement in identifying only a portion of respiratory events.
• Pes monitoring was more sensitive in detecting respiratory events compared to tcPCO2 and expired CO2.

Conclusions:

• UARS is a significant sleep-disordered breathing condition often overlooked when obstructive sleep apneas are absent.
• Clinical evaluations alone are insufficient to distinguish UARS from OSAS.
• Esophageal pressure monitoring is the most effective method for recognizing abnormal breathing patterns indicative of UARS in children.