Reactionless of cerebral oxygen saturation on carbon dioxide as a risk factor for postoperative delirium in elderly patients undergoing major abdominal surgery.

Status

Active, not recruiting

Phases

Early Phase 1

Study type

Observational

Source

ChiCTR

Registry ID

ChiCTR2100048072

Enrollment

Unknown

Registered

2021-06-30

Start date

2021-07-15

Completion date

Unknown

Last updated

2022-08-30

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

Conditions

Postoperative delirium

Interventions

Case series:Change arterial partial carbon dioxide pressure

Eligibility

Sex/Gender

All

Age

60 Years to 90 Years

Inclusion criteria

Inclusion criteria: 1. Aged over 60 years old; 2. ASA I-III; 3. The operation time is greater than or equal to 2 hours; 4. Agree and sign the informed consent.

Exclusion criteria

Exclusion criteria: 1. Patient unable to perform cognitive and psychometric tests for any reason, including sensory impairment, disorders of language, and previous diagnosis of dementia, Patients refusal to participate; 2. The preoperative simple mini-mental state scale (MMSE) score was calculated before the study, and patients who failed to pass the exam (patients who were illiterate and obtained a score=17, those with primary school education who obtained a score=20, those with middle school education who obtained a score=22, and those with university education who obtained a score=23); 3. Participation in other clinical studies in the last 3 months; 4. Other researchers believe that it is not suitable for participating in the study.

Design outcomes

Primary

Measure	Time frame
rSO2%;	—

Countries

China

Contacts

Public ContactHu Xianwen

The Second Affiliated Hospital of Anhui Medical University

1601905832@qq.com+86 17764433509

Outcome results

None listed

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