Accuracy of Masimo Pulse Co-oximeters for Haemoglobin Measurement

Comparison of Haemoglobin as measured by Masimo Radical-7 Pulse Co-Oximeter and Arterial Blood Gas in patients in the operating theatre who would otherwise have had an arterial blood gas.

Status

Not yet recruiting

Phases

Unknown

Study type

Observational

Source

ANZCTR

Registry ID

ACTRN12610000769088

Enrollment

Registered

2010-09-15

Start date

2010-09-20

Completion date

Unknown

Last updated

2020-01-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

Masimo manufactures a pulse co-oximeter which can measure haemoglobin and which looks similar to a pulse oximeter. This study compares the haemoglobin values obtained with the device and ABG in patients in the operating theatre.

Interventions

Patients having an arterial blood gas (ABG) will also have pulse co-oximeter probe placed for measurement. ABG involves aspiration of blood from an arterial line into an ABG syringe which is then analysed by a machine which is able to measure haemoglobin concentration. ABGs are routinely performed on patients in theatre. Additional ABGs will not be performed because of this study. The process from blood sampling to result is abuot 5 minutes. They are normally performed up to every few minutes to not at all on patients with arterial cannulau in theatre as dictated by clinical circumstances. The pulse co-oximeter probe will be placed on the patient's finger about a minute prior to ABG sampling (as 45 seconds is required for measurement. The pulse co-oximeter passes multiple wavelengths of light through tissue (similar to current pulse oximeters) and a computer is able to calculate haemoglobin concentration from this. Data to be collected over 2 weeks.

Eligibility

Sex/Gender

All

Age

0 to No maximum

Healthy volunteers

Inclusion criteria

All patients presenting to the operating theatre who are to have a blood gas.

Exclusion criteria

Emergent situations where use of the pulse co-oximeter may delay vital treatment

Outcome results