Comparison of new generation motion-resistant pulse oximeters

Area of Science:

• Medical Devices
• Pediatric Monitoring
• Oximetry

Background:

• Pulse oximetry is crucial for monitoring oxygen saturation in children.
• Assessing oximeter accuracy during motion and low perfusion is vital for clinical reliability.
• Paediatric sensors require specific validation for accurate readings.

Purpose of the Study:

• To compare the performance of three different pulse oximeters in healthy children.
• To evaluate oximeter accuracy during induced motion and brachial artery occlusion.
• To determine which pulse oximeter meets stringent accuracy criteria.

Main Methods:

• Simultaneous use of MasimoSET, Mars 2001, and Nellcor 595 oximeters on children aged 6-10 years.
• Simulated normal movements and graded brachial artery occlusion were employed as interventions.
• Comparison of oximeter heart rate and oxygen saturation readings against ECG and baseline values.

Main Results:

• All devices showed no significant mean heart rate difference from ECG, but Mars 2001 and Nellcor 595 forehead probe had wide limits of agreement.
• Only the Nellcor 595 finger probe achieved the predefined 4% limits of agreement for heart rate.
• The Nellcor 595 finger probe exhibited the lowest prevalence of significant oxygen saturation drops (1.59%) during testing.

Conclusions:

• Motion-resistant pulse oximeters demonstrate acceptable performance in pediatric patients.
• The Nellcor 595 pulse oximeter with a finger probe met the study's strict accuracy requirements.
• Further validation of oximeter accuracy in pediatric populations is essential.