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The purpose of this study is to compare the effect of the 25° head-up position versus the 55° head-up position on tolerable apnea time (TAT) after induction of general anesthesia in patients with a body mass index (BMI) of 30-40.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| A - 25° head-up position | Active Comparator | Participants will be positioned at 25° angle for procedure. |
|
| B - 55° head-up position | Active Comparator | Participants will be positioned at 55° angle for procedure. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| 25° head-up position | Other | Participant will be positioned at 25° angle for procedure. |
|
| Measure | Description | Time Frame |
|---|---|---|
| Tolerable Apnea Time (TAT) | Measure of the TAT between groups to determine if the TAT is a function of the participant's position. | Time between start of induction of general anesthesia (SpO2 100%) to decline of SpO2 94%, up to eight minutes |
| Measure | Description | Time Frame |
|---|---|---|
| Length of time to intubation (TTI) | Time between start of the tracheal intubation procedure to completion of tracheal intubation, up to 2 minutes | |
| Peripheral arterial hemoglobin oxygen saturation (SpO2) trough | Measure of the rebound SpO2. It is the lowest SpO2 reading reached subsequent to start of mechanical ventilation at the SpO2 value of 94% and it represents final completion of SpO2 decline. |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Mirsad Dupanović, MD | University of Kansas Medical Center | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| University of Kansas Medical Center | Kansas City | Kansas | 66160 | United States |
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The person measuring and recording the study data will be blinded.
| 55° head-up position | Other | Participant will be positioned at 55° angle for procedure. |
|
| Time until SpO2 decreased to 92%, up to 8 minutes |