Clinical Definition

Oxygen saturation characteristics:

  • Hemoglobin Saturation: Percentage of oxygen-carrying capacity being used
  • Non-Invasive Measurement: Assessed using pulse oximetry
  • Real-Time Monitoring: Continuous assessment during sleep
  • Normal Range: Typically 95-100% in healthy individuals
  • Sleep Changes: May decrease slightly during normal sleep

SpO2 monitoring during sleep studies provides crucial information about the physiological impact of breathing disorders.

Etymology & History

Oxygen saturation measurement has been possible since the development of pulse oximetry in the 1970s, revolutionizing respiratory monitoring including sleep studies.

Reference Values & Interpretation

Normal Values

Normal SpO2 levels should remain above 95% during wake and above 90% during sleep in healthy individuals.

Abnormal Values

Abnormal SpO2 includes values below 90% during sleep, indicating hypoxemia and potential health risks from inadequate oxygenation.

How It's Measured

SpO2 is measured using pulse oximetry, typically with a finger probe during sleep studies, providing continuous oxygen saturation monitoring.

Role in Diagnosis

SpO2 assessment is essential for sleep apnea diagnosis, severity assessment, and monitoring treatment effectiveness.

Role in Treatment

SpO2 monitoring guides treatment decisions, with low values indicating need for intervention and improvement showing treatment success.

Associated Conditions

pulse-oximetry|oxygen-monitoring|hypoxemia|respiratory-assessment

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Clinical Guidelines

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Latest Research & Updates

AI-Updated Weekly

Recent advances include wireless oximetry systems, improved accuracy in challenging conditions, and integration with other physiological monitoring systems.