Related Experiment Videos
Interventions in the paediatric sleep laboratory: the use and titration of respiratory support therapies
1The University of Sydney, and The Children's Hospital at Westmead, Sydney, NSW 2152, Australia. kaw@med.usyd.edu.au
Insights
Overnight polysomnography (PSG) diagnoses sleep-related breathing disorders by identifying respiratory abnormalities during sleep. PSG guides treatment adjustments for conditions like airway collapse and inadequate ventilation.
Area of Science:
- Neurology
- Pulmonology
- Sleep Medicine
Background:
- Sleep alters neurological pathways and muscle tone, creating respiratory vulnerabilities.
- Respiratory abnormalities may only manifest during specific sleep states.
- Overnight polysomnography (PSG) is crucial for diagnosing sleep-related breathing disorders.
Purpose of the Study:
- To review sleep-related respiratory disorders.
- To categorize disorders by cause: upper airway collapse, poor gas diffusion, or inadequate ventilation.
- To highlight the diagnostic and therapeutic role of PSG.
Main Methods:
- Review of literature on sleep-related respiratory disorders.
- Categorization of disorders based on underlying pathophysiology (airway, diffusion, ventilation).
- Discussion of PSG's utility in diagnosis and treatment monitoring.
Main Results:
- Respiratory disorders during sleep stem from upper airway issues, gas diffusion problems, or inadequate ventilation (due to drive or muscle function).
- PSG differentiates central vs. peripheral origins of disorders based on sleep state association.
- Common treatments include oxygen, CPAP, and non-invasive ventilation.
Conclusions:
- Overnight PSG is essential for diagnosing and assessing the severity of sleep-related respiratory disorders.
- PSG aids in distinguishing the origin of respiratory abnormalities (central vs. peripheral).
- PSG is vital for titrating and monitoring treatments like CPAP and non-invasive ventilation, especially in pediatric sleep labs.
Abstract:
During sleep changes in central and peripheral neurological pathways and muscle tone result in unique vulnerabilities in the respiratory system. Abnormalities of the respiratory system that are not apparent in wakefulness can become evident during particular sleep states, making overnight polysomnography (PSG) a valuable diagnostic indicator of the source as well as the severity of the abnormality. In this review these respiratory disorders are grouped according to whether they are attributable to upper airway collapse, poor gas diffusion or inadequate ventilation (respiratory effort). Inadequate ventilation may be secondary to abnormal respiratory drive (control) or to inadequate pulmonary muscle function. As a diagnostic tool, overnight PSG can help distinguish whether the origin of the disorder is central or peripheral on the basis of which sleep state is associated with greatest abnormality. The most common treatment interventions include supplemental oxygen, continuous positive airway pressure and non-invasive ventilation. Ventilation may be with either pressure or volume cycle devices. Overnight PSG is used for the titration and monitoring of these treatments since all these forms of respiratory support require regular adjustment to match patient requirements. The methods for titration and goals of optimal therapy in the paediatric sleep laboratory are discussed.
Related Concept Videos
Mechanical Ventilation III: Noninvasive Ventilation
Noninvasive Positive-Pressure Ventilation (NIPPV)
Acute Respiratory Failure-V
Ensure that patients are monitored continuously for their response to therapy, including changes in...
Respiratory Assessment: Purpose and Indications
Objectives and Importance:
The primary goal of respiratory assessment is to evaluate patients at early risk of clinical deterioration. Since respiratory distress often precedes other signs of declining health, breathing patterns and sounds become a...
Assessment of Ventilation I: Respiratory Rate
A Ventilation assessment is critical for monitoring a patient's health status. Respiration, one of the most accessible vital signs, provides insights into the function of numerous body systems and can indicate serious health issues, such as brainstem injuries from head trauma.
Critical Guidelines for Assessing Ventilation:
Acute Respiratory Failure-IV
Mechanical Ventilation I: Indication and Settings