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Pulse Oximetry

Pulse Oximetry

Pulse oximetry, or SpO2, is a non-invasive method for continuously monitoring arterial oxygen saturation (SaO2). This procedure involves attaching a probe or sensor to the patient's fingertip, forehead, earlobe, or nose bridge. The sensor works by detecting changes in oxygen saturation levels through light signals generated by the oximeter and reflected by the pulsing blood under the probe.
Purpose
Average SpO2 values are greater than 95%. If the readings fall below 90%, it indicates that...

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Related Experiment Video

Updated: Apr 23, 2026

Author Spotlight: Extended Oxygen Consumption Measurement in Retinal Pigment Epithelium Using Resipher

Author Spotlight: Extended Oxygen Consumption Measurement in Retinal Pigment Epithelium Using Resipher

Published on: August 16, 2024

Pathway to Retinal Oximetry.

¹CytoViva, Inc., Auburn, Alabama.

Translational Vision Science & Technology

|September 20, 2014

Summary

This summary is machine-generated.

Oximetry, a technique measuring oxygen saturation, evolved from historical oxygen monitoring advancements. Recent retinal vessel oximetry research aids in understanding and diagnosing eye diseases.

Keywords:

historical review in vivo imaging oximetry

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Area of Science:

Ophthalmology
Physiological Measurement
Medical Imaging

Background:

Historical advancements in oxygen monitoring over two centuries.
Parallels between early tissue oxygen measurements and later retinal oximetry.
Evolution of oximetry techniques driven by technological progress.

Purpose of the Study:

To trace the historical development of retinal oximetry.
To highlight key achievements and individuals in oxygen monitoring and oximetry.
To summarize recent applications of retinal vessel oximetry in eye disease research.

Main Methods:

Review of historical events and discoveries in oxygen monitoring.
Analysis of parallels between tissue and retinal oxygen measurements.
Examination of the two-wavelength technique for retinal oxygen saturation.
Exploration of imaging technology's role in oximetry development.

Main Results:

Oxygen monitoring has a rich two-century history.
Retinal oximetry evolved from broader oxygen sensing techniques.
The two-wavelength method advanced with imaging technology.
Retinal vessel oximetry is increasingly used in disease research.

Conclusions:

Retinal oximetry's development is rooted in historical oxygen monitoring.
Technological innovation has been crucial for advancing retinal oximetry.
Vessel oximetry shows promise for diagnosing and managing retinal diseases.