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Effects of different preoxygen patterns on the perioperative pulmonary atelectasis during induction of general anesthesia

Effects of different preoxygen patterns on the perioperative pulmonary atelectasis during induction of general anesthesia

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ChiCTR
Registry ID
ChiCTR1900027993
Enrollment
Unknown
Registered
2019-12-07
Start date
2019-12-10
Completion date
Unknown
Last updated
2019-12-10

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

Conditions

perioperative pulmonary atelectasis

Interventions

group A: 100% oxygen through mask before anesthesia induction
group B: 80% oxygen through mask before anesthesia induction
group C:100% oxygen through HFNC before anesthesia induction
group D:80% oxygen through HFNC before anesthesia induction

Sponsors

Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 100 Years

Inclusion criteria

Inclusion criteria: Surgery under general anesthesia with tracheal intubation, selective laparoscopic assisted gastrointestinal operation, 18 years or above, ASA 1 ~ II.

Exclusion criteria

Exclusion criteria: Restriction of mouth opening; history of cervical spine surgery; BMI> 30 kg/ m2; history of head and neck radiotherapy; combined symptoms of intestinal obstruction or gastric obstruction; language barrier or difficulty in communication; severe snoring; pregnancy; Mallampati over Grade 3; anemia.

Design outcomes

Primary

MeasureTime frame
PaO2;—

Countries

China

Contacts

Public ContactYIN KANG

Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences

76247628@qq.com+86 15820202786

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 4, 2026