The Efficacy of Two Oxygen Therapy Devices(Nasal Cannula vs. Simple Mask) for Preventing Hypoxemia after General Anesthesia:A Randomized Controlled Non-Inferiority Trial

The Efficacy of Two Oxygen Therapy Devices(Nasal Cannula vs. Simple Mask) for Preventing Hypoxemia after General Anesthesia:A Randomized Controlled Non-Inferiority Trial - The Efficacy of Two Oxygen Therapy Devices(Nasal Cannula vs. Simple Mask) for Preventing Hypoxemia after General Anesthesia

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000030565

Enrollment

150

Registered

2017-12-26

Start date

2017-12-26

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Dental treatment

Interventions

We get a questionnaire (STAI) before surgery. Oxygen is administrated via a nasal cannula at 3L/min for 1 hour after general anesthesia. Monitoring is performed for 2 hours after general anesthesia,

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: The patients awaiting surgery under general anesthesia/ Provided written informed consent to undergo the procedure/ be able to communicate in Japanese/ ASA Physical Status 1 or 2.

Exclusion criteria

Exclusion criteria: Exclusion criteria includes patients who are undergoing oxygen therapy before surgery/ scheduled to have indwelling nasogastric/ scheduled to treat the maxilla sinus and nasal cavity/ judged to unsuitable to this study.

Design outcomes

Primary

Measure	Time frame
Questionnaire (STAI, VAS of postoperative pain, nausea and comfort)	—

Secondary

Measure	Time frame
Comparison of amount of change in oxygen saturation between before and after general anesthesia.	—

Countries

Japan

Contacts

Public ContactKawamoto Yui

Showa University Dental Hospital Department of Perioperative Medicine, Division of Anesthesiology

yui0203@dent.showa-u.ac.jp03(3787)1151

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026