Effect of different inhaled oxygen concentration on cerebral oxygen saturation and delirium after abdominal surgery

Status

Recruiting

Phases

Early Phase 1

Study type

Interventional

Source

ChiCTR

Registry ID

ChiCTR1900022371

Enrollment

Unknown

Registered

2019-04-08

Start date

2019-04-08

Completion date

Unknown

Last updated

2019-04-15

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

Conditions

POD

Interventions

A:FiO 240%

B:FiO 260%

C:FiO 280%

Eligibility

Sex/Gender

All

Age

40 Years to 85 Years

Inclusion criteria

Inclusion criteria: Inclusion criteria: age 40-80; ASA I-II; no severe liver and kidney dysfunction; no history of psychotropic drug addiction; no stenosis of carotid artery; informed consent collaborators.

Exclusion criteria

Exclusion criteria: Exclusion criteria: preoperative MMSE 5 hours; intraoperative bleeding > 200 ml.

Design outcomes

Primary

Measure	Time frame
rSO2;BP;	—

Countries

China

Contacts

Public ContactLin Xu

Qingdao Municipal Hospital

linxu_green@126.com+86 18678951375

Outcome results

None listed

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