Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Our primary objective is to determine whether oxygen reserve index ORI can be a reliable and sensitive indicator of hypoxia and hyperoxia in low-flow anesthesia settings. Our secondary objective is to investigate the ORI changes during preoxygenation stage.
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Group H | High Flow Anesthesia Group |
| |
| Group M | Minimal Flow Anesthesia Group |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Oxygen reserve index | Device | Measuring oxygen reserve index during preoxygenation and under general anesthesia |
|
| Measure | Description | Time Frame |
|---|---|---|
| Oxygen Reserve Index Value | The Oxygen Reserve Index (ORI) is a real-time monitoring measure that captures the oxygen reserve status in the moderate hyperoxic range (PaO2 approximately 100 to 200 mmHg). ORI provides early warning of potential oxygenation disturbances before any changes occur in SpO2 and indicates the response to oxygen therapy. ORI ranges from 1 (high reserve) to 0 (no reserve) and measures changes in mixed venous oxygen saturation (SvO2) optically after arterial oxygen saturation reaches 100%. | For each patient, from preoxygenation stage to the end of the general anesthesia |
Not provided
Not provided
Inclusion Criteria:
Exclusion Criteria:
Not provided
Not provided
Patients undergoing elective ear, nose, throat surgery.
Not provided
Not provided
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Sakarya University Training and Research Hospital | Sakarya | 54290 | Turkey (Türkiye) |
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
| ID | Term |
|---|---|
| D000860 | Hypoxia |
| D018496 | Hyperoxia |
| ID | Term |
|---|---|
| D012818 | Signs and Symptoms, Respiratory |
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |
Not provided
Not provided
Not provided
Not provided
Not provided