Pulse Oximetry

Pulse Oximetry is a topic covered in the Davis's Lab & Diagnostic Tests.

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Oximetry, pulse ox.

To assess arterial blood oxygenation toward evaluating respiratory status during ventilation, acute illness, activity, and sleep and to evaluate the effectiveness of therapeutic interventions.

Patient Preparation
There are no food, fluid, or medication restrictions unless by medical direction.

Normal Findings

  • Greater than or equal to 95% (values may be at the lower end of the normal range in older adults).

Critical Findings and Potential Interventions

  • Hypoxia occurs at oxygen saturation levels less than 90%. Significant hypoxia, levels less than 85%, require immediate evaluation and treatment.

Timely notification to the requesting health-care provider (HCP) of any critical findings and related symptoms is a role expectation of the professional nurse. A listing of these findings varies among facilities.

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