Pulse Oximetry

Video 119 of 131

2 min 44 sec

English

English

Want to watch this video? Sign up for the course or click below to watch one free video.

Unlock This Video Now for FREE

This video is normally available to paying customers. Click below for instant access.

Watch Using YouTube Player Transcript

Pulse Oximetry: Understanding and Application

Introduction to Pulse Oximetry

Pulse oximetry is a vital tool for measuring oxygen saturation in arterial blood, providing critical insights into patient health without invasive procedures.

Benefits of Pulse Oximetry

Non-invasive: Measures oxygen saturation painlessly, without requiring a blood sample.
Instant Results: Provides immediate readings of oxygen saturation levels.
Cost-effective: A simple, low-cost device suitable for inclusion in first aid kits.

Using Pulse Oximeters

Pulse oximeters typically measure oxygen saturation at the fingertip, earlobe, or toe:

Procedure: Insert the finger into the device and ensure a secure fit for accurate readings.
Reading Stability: Allow the device time to stabilize before recording oxygen saturation (SpO2) and pulse rate.

Interpreting Readings

Understanding SpO2 levels:

Normal Range: Typically between 95% and 100% in healthy individuals.
Mild Hypoxia: SpO2 levels of 91% to 94%, indicating potential health concerns.
Significant Hypoxia: SpO2 below 90%, requiring immediate medical attention due to inadequate oxygen delivery to tissues.

Factors Affecting Accuracy

Several factors can influence pulse oximeter accuracy:

Circulation Issues: Poor circulation or cold fingers may affect readings.
External Factors: Nail polish, artificial nails, ambient light, and motion can interfere with readings.
Carbon Monoxide: In cases of poisoning, pulse oximeters may not detect carbon monoxide-bound haemoglobin accurately.

Limitations of Pulse Oximetry

While useful for indicating oxygen saturation levels, pulse oximetry does not measure total oxygen content in blood or assess oxygen delivery efficiency to tissues.

Clinical Considerations

For clinical decisions, abnormal pulse oximetry results should be verified with arterial blood gases or other appropriate tests.

Recommended Products For You

WoundClot Trauma 20cm x 30cm £37.95 + VAT

HeartHero Lifesaver Kit £685.00 + VAT

Lifesaver Kit Ultra - Red £99.00 + VAT

Lifesaver Kit with Tourni-Key - Black £85.00 + VAT

First Aid Upgrade Kit £17.95 + VAT

Personal Bleed Kit in Belt Pouch - Black £34.95 + VAT

Animal First Aid Kit £12.00 + VAT

Pet Bleed Kit £14.95 + VAT