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The purpose of this study is to compare the preoxygenation efficacy of tidal volume breathing and vital capacity breathing.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Tidal volume breathing technique | Experimental | High-flow nasal oxygen will be applied to the patients through nasal openings using Optiflow system before anesthetic induction. Tidal volume breathing will be applied. Pulse oximetry, end-tidal O2, and oxygen reserve index will be monitored continuously. |
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| Vital capacity breathing technique | Active Comparator | High-flow nasal oxygen will be applied to the patients through nasal openings using Optiflow system before anesthetic induction. Vital capacity breathing will be applied. Pulse oximetry, end-tidal O2, and oxygen reserve index will be monitored continuously. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Tidal volume breathing technique | Procedure | High-flow nasal oxygen will be applied to the patients through nasal openings using Optiflow system before anesthetic induction. Tidal volume breathing will be applied. Pulse oximetry, end-tidal O2, and oxygen reserve index will be monitored continuously. |
| Measure | Description | Time Frame |
|---|---|---|
| End-tidal O2 | End-tidal O2 will be monitored continuously before anesthetic induction. | for 10 minutes before anesthetic induction. At Day 0. |
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Inclusion Criteria:
-Adult patients 20 years of age or older who are planning to undergo surgery under general anesthesia
Exclusion Criteria:
-basal skull fracture, 2번 - facial anomaly, 3번 - consciousness disorder, 4번 - Risk of aspiration
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| Name | Affiliation | Role |
|---|---|---|
| Hyun Joo Kim | Severance Hospital | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Yonsei University Health System, Severance Hospital | Seoul | South Korea |
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| Vital capacity breathing technique | Procedure | High-flow nasal oxygen will be applied to the patients through nasal openings using Optiflow system before anesthetic induction. Vital capacity breathing will be applied. Pulse oximetry, end-tidal O2, and oxygen reserve index will be monitored continuously. |
|