What question did this study set out to answer?

To evaluate and rank the performance, precision, and accuracy of 20 finger-probe pulse oximeters against direct arterial blood oxygen saturation measurements in patients with poor peripheral perfusion.

January 1, 1991Anaesthesia

A comparison of the performance of 20 pulse oximeters under conditions of poor perfusion

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Why the study?

How do different pulse oximeters perform compared to directly measured arterial blood oxygen saturations in post-cardiac surgery patients with poor peripheral perfusion?

Population

Patients who had undergone cardiac surgery under hypothermic cardiopulmonary bypass and had poor peripheral…

Comparison

Measurement with 20 different pulse oximeters… vs Directly measured arterial blood oxygen…

Design

Cross-sectional

Authors

DCD. G. ClaytonKleijnen Systematic Reviews (United Kingdom)RWR. K. WebbRoyal Brisbane and Women's Hospital ARAnna RalstonRoyal Australian College of General Practitioners

Discussion

Member takes

Implication

Pulse oximeter reliability varies in low perfusion; supports cautious device selection but leaves open prospective validation.

Key Points

To evaluate and rank the performance, precision, and accuracy of 20 finger-probe pulse oximeters against direct arterial blood oxygen saturation measurements in patients with poor peripheral perfusion.
Evaluated 20 pulse oximeters with finger probes in patients experiencing poor peripheral perfusion following cardiac surgery under hypothermic cardiopulmonary bypass.
Compared device readings directly with co-oximeter arterial blood oxygen saturation measurements.
Ranked devices using five criteria: bias (accuracy), precision (standard deviation), drop-out rate, readings within 3% of the standard, and expected 95% overread limits.
Only two of the 20 pulse oximeters achieved accuracy and precision sufficient for 95% of measurements to fall within 4% of the co-oximeter standard value.
The top two performing devices also demonstrated the lowest signal drop-out rates under conditions of low peripheral perfusion.

Structured PICO

How do different pulse oximeters perform compared to directly measured arterial blood oxygen saturations in post-cardiac surgery patients with poor peripheral perfusion?

Population

Patients who had undergone cardiac surgery under hypothermic cardiopulmonary bypass and had poor peripheral perfusion

Intervention

Measurement with 20 different pulse oximeters with finger probes

Comparator

Directly measured arterial blood oxygen saturations (co-oximeter)

Outcome

Device accuracy (mean difference/bias) and precision (standard deviation)surrogate

In patients with poor peripheral perfusion following cardiac surgery, the accuracy and reliability of pulse oximeters vary widely, with only a few devices providing highly precise measurements.

Cite This Study

Clayton et al. (1991) studied this question.

synapsesocial.com/papers/6a8b0e4dd5d4290f64f45c67 https://doi.org/10.1111/j.1365-2044.1991.tb09303.x

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A comparison of the performance of 20 pulse oximeters under conditions of poor perfusion

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

A comparison of the performance of 20 pulse oximeters under conditions of poor perfusion

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Also Consider

Also Consider