The oximeter is used to monitor intensive care patients undergoing oxygen therapy. It indicates pulsed oxygen saturation (SpO2), a reflection of arterial oxygen saturation (SaO2) which enables detection of hypoxemia and hyperoxia, both deleterious state. Current SpO2 recommendations aim to reduce both risk of hypoxemia and hyperoxia. SpO2 is considered the 5th vital sign. Current recommendations for SpO2 targets do not consider the variability of oximeters used in clinical practice. This variability and lack of specification represent an obstacle to an optimal practice of oxygen therapy. Thus, this study aims to compare the SpO2 values of different oximeters (Nonin, Masimo, Philips, Nellcor) used in clinical practice with the SaO2 reference value obtained by an arterial gas in order to specify the precision and the systematic biases of the oximeters studied. This data will also make it possible to refine the recommendations concerning optimal oxygenation
Study Type
OBSERVATIONAL
Enrollment
300
Several pulse oximeter will be place on patient find few minutes before arterial blood gases. During an arterial blood sample, all SpO2 will be recorded
CHUM
Montreal, Quebec, Canada
NOT_YET_RECRUITINGInstitut Universitaire de Cardiologie et de Pneumologie de Québec
Québec, Canada
RECRUITINGDiffence between Nellcor SpO2 and the SaO2 value
Diffence between Nellcor oximeter SpO2 and the SaO2 value
Time frame: During arterial blood gase sample
Diffence between FreeO2 SpO2 and the SaO2 value
Diffence between Nonin (FreeO2) oximeter SpO2 and the SaO2 value
Time frame: During arterial blood gase sample
Diffence between Nonin ear clip and the SaO2 value
Diffence between Nonin (ear sensor) oximeter SpO2 and the SaO2 value
Time frame: During arterial blood gase sample
Diffence between Masimo SpO2 and the SaO2 value
Diffence between Masimo oximeter SpO2 and the SaO2 value
Time frame: During arterial blood gase sample
Diffence between Philips SpO2 and the SaO2 value
Diffence between Philips oximeter SpO2 and the SaO2 value
Time frame: During arterial blood gase sample
Diffence between Contec SpO2 and the SaO2 value
Difffence between Contec oximeter SpO2 and the SaO2 value
Time frame: During arterial blood gase sample
Diffence between Bejing choice SpO2 and the SaO2 value
Diffence between Bejing choice oximeter SpO2 and the SaO2 value
Time frame: During arterial blood gase sample
Overestimation and underestimation of SaO2
% of pairs with overestimation and underestimation of SaO2 for each oximeter.
Time frame: During arterial blood gase sample
Hypoxemia detection
Ability to detect hypoxemia (SpO2 below 90% and PaO2 \< 60 mmHg)
Time frame: During arterial blood gase sample
Hyperoxemia detection
Ability to detect hyperoxemia (SpO2 above 95% and PaO2 \> 100 mmHg)
Time frame: During arterial blood gase sample
Gaps between the different oximeters
Average of the SpO2 value gaps between the different oximeters tested
Time frame: During arterial blood gase sample
Finger and ear sensor comparison
Comparison of the finger sensor and ear clip sensor for Nonin oximeter
Time frame: During arterial blood gase sample
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