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Oxygen therapy is at the heart of the healthcare system. Oxygen flow rates depend on a number of confounding factors confounding factors (target used, skin pigmentation, pulse oximeter used, etc.) The investigators have recently have recently demonstrated that the combination of these factors (different peripheral oxygen saturation (SpO2) targets and different oximeters) can have a significant impact on oxygen flows rates. The effect on oxygen flow was not simply additive .
The aim of this study is to evaluate the impact of the interface used on oxygen flow rates in different patient populations (main objective). The investigatoers also evaluate the impact of the interface on carbon dioxide (PaCO2), in particular with closed oxygen masks, with which rebreathing is theoretically possible (secondary objective).
secondary objective).
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Nellcor oximeter | Other |
| |
| Nonin Oximeter | Other |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Nasal canula - up to 6 liters per minute | Device | Oxygen will be administered via nasal cannula up to 6 liters per minute during this period. Oxygen flow rates will be adjusted manually, with a gradual increase in flow rates to achieve a oxygen flow rates for reach the peripheral oxygen saturation (SpO2) target (92% for non chronic obstructive pulmonary disease (non COPD) patient and 90% for chronic obstructive pulmonary disease (COPD) patient). The steady state will be defined by a fixed oxygen flow rate and a stable SpO2 around the target ±2% for 15 minutes. The average oxygen flow rate during the last five minutes will be used. |
| Measure | Description | Time Frame |
|---|---|---|
| Oxygen flow | Oxygen flows (or fraction of inspired oxygen (FiO2)) at the end of each study period (last minute average) to reach peripheral oxygen saturation (SpO2) target to reach SpO2 target with specific oxygen administration interfaces | Mean Oxygen flow in the five last minute of each study period (between minute 10 and 15) |
| Measure | Description | Time Frame |
|---|---|---|
| Partial oxygen weaning | Rate of partial oxygen weaning (Oxygen flow <=0.5 L/min) | Mean oxygen flow in the five last minute of each study period (between minute 10 and 15) |
| Complete oxygen weaning |
| Measure | Description | Time Frame |
|---|---|---|
| Gaps between the different oximeters | Average of the SpO2 value gaps between the different oximeters tested | through period completion, minute 15 |
| Gaps between PaCO2 | PaCO2 value at the end of the period |
Inclusion Criteria:
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| François Lellouche | Contact | 1-418-656-8711 | françoislellouche@criucpq.ulaval.ca |
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Institut Universitaire de Cardiologie et de Pneumologie de Québec | Québec | G1V4G5 | Canada |
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|
| Nasal canula - up to 15 liters per minute | Device | Oxygen will be administered via nasal cannula up to 15 liters per minute during this period. Oxygen flow rates will be adjusted manually, with a gradual increase in flow rates to achieve a oxygen flow rates for reach the SpO2 target (92% for non COPD patient and 90% for COPD patient). The steady state will be defined by a fixed oxygen flow rate and a stable SpO2 around the target ±2% for 15 minutes. The average oxygen flow rate during the last five minutes will be used. |
|
| Open oxygen mask | Device | Oxygen will be administered via an open during this period. Oxygen flow rates will be adjusted manually, with a gradual increase in flow rates to achieve a oxygen flow rates for reach the SpO2 target (92% for non COPD patient and 90% for COPD patient). The steady state will be defined by a fixed oxygen flow rate and a stable SpO2 around the target ±2% for 15 minutes. The average oxygen flow rate during the last five minutes will be used. |
|
| Simple oxygen face mask | Device | Oxygen will be administered via simple oxygen face mask during this period. Oxygen flow rates will be adjusted manually, with a gradual increase in flow rates to achieve a oxygen flow rates for reach the SpO2 target (92% for non COPD patient and 90% for COPD patient). The steady state will be defined by a fixed oxygen flow rate and a stable SpO2 around the target ±2% for 15 minutes. The average oxygen flow rate during the last five minutes will be used. |
|
Rate of complete oxygen weaning (Oxygen flow =0 L/min or FiO2 0.21)
| Mean oxygen flow in the five last minute of each study period (between minute 10 and 15) |
| through period completion, minute 15 |
| ID | Term |
|---|---|
| D012131 | Respiratory Insufficiency |
| ID | Term |
|---|---|
| D012120 | Respiration Disorders |
| D012140 | Respiratory Tract Diseases |
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