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Association Between Red Blood Cell Distribution Width-to-Total Serum Calcium Ratio (RTR) and Delirium Incidence in Elderly Orthopedic Surgery Patients in Intensive Care Units (ICU): A Retrospective Study Based on MIMIC-IV Database

Association Between Red Blood Cell Distribution Width-to-Total Serum Calcium Ratio (RTR) and Delirium Incidence in Elderly Orthopedic Surgery Patients in Intensive Care Units (ICU): A Retrospective Study Based on MIMIC-IV Database

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
ChiCTR
Registry ID
ChiCTR2500106773
Enrollment
Unknown
Registered
2025-07-30
Start date
2025-08-31
Completion date
Unknown
Last updated
2025-08-18

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

Conditions

(1)an acute fluctuation of mental state

Interventions

Delirium group:None
Non-delirium group:None

Sponsors

Hebei General Hospital
Lead Sponsor

Eligibility

Sex/Gender
All
Age
60 Years to No maximum

Inclusion criteria

Inclusion criteria: 1. Patients were admitted to the intensive care unit; 2. Patients who have undergone orthopedic surgery in the elderly; 3. Age >= 60; 4. First hospitalization, first admission to ICU and ICU stay greater than 24h;

Exclusion criteria

Exclusion criteria: 1. A full CAM-ICU assessment was not performed; 2. Diagnosed with dementia; 3. Patients with incomplete data;

Design outcomes

Primary

MeasureTime frame
Delirium;Red Blood Cell Distribution Width-to-Total Serum Calcium Ratio;—

Countries

China

Contacts

Public ContactLi Jianli

Hebei General Hospital

hblijianli@163.com+86 311 85988447

Outcome results

None listed

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