Hyperoxemia, Hypoxemia, Respiratory Failure
Conditions
Brief summary
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
Interventions
DEVICESpO2 and SaO2 comparison
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
Sponsors
Laval University
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Inclusion criteria
* ≥ 18 years old * Patients admitted to the Intensive Care Unit * Artery catheter already installed
Exclusion criteria
* No signal with the oximeter * Pigmented nails or nail polish * Methemoglobinemia * Patient in isolation (multi-resistant bacteria, C-Difficile, COVID-19…) * Prone position
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Diffence between Bejing choice SpO2 and the SaO2 value | During arterial blood gase sample | Diffence between Bejing choice oximeter SpO2 and the SaO2 value |
| Diffence between Nonin ear clip and the SaO2 value | During arterial blood gase sample | Diffence between Nonin (ear sensor) oximeter SpO2 and the SaO2 value |
| Diffence between Nellcor SpO2 and the SaO2 value | During arterial blood gase sample | Diffence between Nellcor oximeter SpO2 and the SaO2 value |
| Diffence between Masimo SpO2 and the SaO2 value | During arterial blood gase sample | Diffence between Masimo oximeter SpO2 and the SaO2 value |
| Diffence between Philips SpO2 and the SaO2 value | During arterial blood gase sample | Diffence between Philips oximeter SpO2 and the SaO2 value |
| Diffence between Contec SpO2 and the SaO2 value | During arterial blood gase sample | Difffence between Contec oximeter SpO2 and the SaO2 value |
| Diffence between FreeO2 SpO2 and the SaO2 value | During arterial blood gase sample | Diffence between Nonin (FreeO2) oximeter SpO2 and the SaO2 value |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Hypoxemia detection | During arterial blood gase sample | Ability to detect hypoxemia (SpO2 below 90% and PaO2 \< 60 mmHg) |
| Hyperoxemia detection | During arterial blood gase sample | Ability to detect hyperoxemia (SpO2 above 95% and PaO2 \> 100 mmHg) |
| Gaps between the different oximeters | During arterial blood gase sample | Average of the SpO2 value gaps between the different oximeters tested |
| Finger and ear sensor comparison | During arterial blood gase sample | Comparison of the finger sensor and ear clip sensor for Nonin oximeter |
| Overestimation and underestimation of SaO2 | During arterial blood gase sample | % of pairs with overestimation and underestimation of SaO2 for each oximeter. |
Countries
Canada
Contacts
Primary ContactFrançois Lellouche
Backup ContactPierre-alexandre Bouchard
Outcome results
None listed