Post-filter hematocrit calculation for adults on continuous renal replacement therapy
Official title: Validation of a Post-Filter Hematocrit Calculation Formula: A Comparative Analysis With Measured Post-Filter Hematocrit Values
Run by University of Iowa · NCT07293936 · Data updated 2026-11-12
This will test whether a calculation can accurately predict post-filter hematocrit compared with machine-measured values in adults receiving continuous renal replacement therapy.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 20 (estimated) |
| Sponsor | University of Iowa Academic / other |
| Locations | 1 site (Iowa City, Iowa) |
| Status | Recruiting |
| Started | March 15, 2025 |
| Main results expected | February 1, 2026 |
| Study ends | March 15, 2026 |
| Registry record updated | December 19, 2025 |
| Trial ID | NCT07293936 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults aged 18 or older who are currently receiving CRRT at the enrolling center and are not on extracorporeal membrane oxygenation (ECMO).
✕Probably not a fit
Patients not receiving CRRT, those on ECMO, or individuals whose clinical condition prevents reliable blood sampling would not benefit from this validation.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
Filter clotting is a common complication of continuous renal replacement therapy (CRRT) that leads to blood loss, reduced treatment efficacy, and higher cost. This single-center validation compares a calculated post-filter hematocrit using the proposed formula HCTpost = HCTpre/(FF(HCTpre-1)+1) with directly measured post-filter hematocrit values from CRRT machines. Adult patients receiving CRRT (age ≥18) will be sampled, with patients on ECMO excluded, and paired calculated and measured values will be analyzed to determine agreement. The study is a cross-sectional diagnostic/method-comparison effort to determine whether the formula provides sufficiently accurate estimates for clinical use.
Why it matters
Potential benefit: If accurate, the formula could allow clinicians to estimate post-filter hematocrit at the bedside and help guide filtration settings to reduce hemofilter clotting, blood loss, and treatment interruptions.
How similar studies have gone: Direct validation of post-filter hematocrit formulas is limited and the approach is relatively novel, with little prior evidence directly demonstrating clinical utility.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * patients initiated on CRRT age equal than or greater to 18 years of age Exclusion Criteria: * patients on ECMO
Where it's running
-
University of Iowa Hospitals and Clinics
Iowa City, Iowa, United States Recruiting
Study contacts
- Study coordinator: Gwyndolyn M Radford, MD
- Email: gradford@uiowa.edu
- Phone: 7858179620
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
-
Intra-Abdominal Pressure Changes During CRRT in Critically Ill Adults
This study tests how intra-abdominal pressure changes in critically ill adults on continuous renal replacement therapy using a bladder pressure measurement.
-
Preventing kidney injury after heart surgery
This study is testing if Coenzyme Q10 and Glutathione can help prevent kidney injury in patients having heart surgery.
-
Pediatric use of multiFiltratePRO for CVVHD in kids
This study tests whether the paediatric mode of multiFiltratePRO can deliver at least 80% of the prescribed CVVHD dose within 72 hours in children with acute kidney injury.
-
Comparing two dialysis techniques for kidney injury in ICU patients
This study is testing whether a new dialysis method using citrate is just as good as a traditional method using heparin for helping ICU patients with kidney injury lower their urea levels.
-
Hand ischaemia risk after creating an arteriovenous fistula
This study will see how often and why adults with stage 5 chronic kidney disease develop short- or medium-term hand ischaemia after an arteriovenous fistula is created.
-
Induction treatment for newly diagnosed multiple myeloma patients with renal failure
This study is testing a new treatment plan for people with newly diagnosed multiple myeloma and kidney problems to see if it helps them respond better to therapy.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.