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The diagnostic and predictive value of preoperative blood gas analysis indicatorsfor postoperative respiratory failure in elderly patients with hip fractures

The diagnostic and predictive value of preoperative blood gas analysis indicatorsfor postoperative respiratory failure in elderly patients with hip fractures

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
ChiCTR
Registry ID
ChiCTR2500115311
Enrollment
Unknown
Registered
2025-12-24
Start date
2025-03-06
Completion date
Unknown
Last updated
2026-01-05

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

Conditions

Femoral neck fracture, intertrochanteric fracture of the femur

Interventions

Gold Standard:Respiratory failure was defined according to at least one of the following criteria: (1) PaO2 50 mmHg
(2) PaO2/FiO2 ratio < 300
(3) SaO2 < 90%.
Index test:FiO2 (Fraction of Inspired Oxygen) was define as the concentration of oxygen in inhaled air, expressed as a decimal or percentage, and calculated as (21+ oxygen flow rate*4)/100. PaO2/FiO2
SaO2/FiO2 ratio was calculated as: SaO2/FiO2 = SaO2

Sponsors

Army Medical Center of PLA
Lead Sponsor

Eligibility

Sex/Gender
All
Age
65 Years to 110 Years

Inclusion criteria

Inclusion criteria: 1. Patients aged 65 or older; 2. Patients with hip fractures confirmed by imaging diagnosis; 3. Patients undergoing surgical treatment for hip fractures; 4. Complete preoperative arterial oxygenation data; 5. Complete records of mechanical ventilation and mechanical ventilation dependency; 6. Complete postoperative mortality records.

Exclusion criteria

Exclusion criteria: 1.nonoperative management of hip fracture, requirement for mechanical ventilation at admission, age <65 years, or missing any aforementioned data;

Design outcomes

Primary

MeasureTime frame
Postoperative acute respiratory failure;30-day all-cause mortality;Accuracy;

Secondary

MeasureTime frame
All-cause mortality within 30 days, 90 days and 180 days after the operation, and within 1 to 6 years;Duration of mechanical ventilation dependence;Mechanical ventilation requirements;Sensitivity;Specificity;

Countries

China

Contacts

Public Contactchen ran

Army Medical Center of PLA

a503256659@qq.com+86 23 6872 9230

Outcome results

None listed

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