Guiding blood flow management during major abdominal surgery using urethral perfusion index

Urethral PeRfusion Index-Guided Hemodynamic ManagemenT in Patients Having Major Abdominal Surgery: the UPRIGHT Randomized Feasibility Trial

Not applicable Interventional Universitätsklinikum Hamburg-Eppendorf · NCT06799832

This study is testing if keeping track of blood flow in the urethra during major abdominal surgery can help improve overall blood flow to the body compared to regular care.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment116 (estimated)
Ages45 Years and up
SexAll
SponsorUniversitätsklinikum Hamburg-Eppendorf Academic / other
Locations2 sites (Hamburg and 1 other locations)
Trial IDNCT06799832 on ClinicalTrials.gov

What this trial studies

This pilot trial aims to evaluate whether maintaining a specific urethral perfusion index during major abdominal surgery can improve tissue perfusion compared to standard care. The study will monitor urethral perfusion in patients undergoing elective surgeries lasting at least 120 minutes and will assess the correlation between urethral perfusion index and other vital signs. Additionally, it will explore the relationship between urethral and peripheral perfusion indices. The trial is conducted at a single center, focusing on a specific patient population.

Who should consider this trial

Good fit: Ideal candidates are patients aged 45 and older scheduled for elective major abdominal surgery requiring arterial and urinary catheters.

Not a fit: Patients who are pregnant, undergoing nephrectomy or organ transplantation, or those with prior urethral or bladder surgery may not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could enhance patient outcomes by optimizing blood flow management during major surgeries.

How similar studies have performed: While this specific approach is novel, similar studies have explored perfusion monitoring in surgical settings with varying degrees of success.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* at least 45 years old
* scheduled for elective major abdominal surgery (involving visceral organs with an expected duration of at least 120 minutes)
* indication for an arterial catheter
* indication for an urinary catheter

Exclusion Criteria:

* Pregnancy
* Planned surgery: nephrectomy, liver or kidney transplantation surgery
* Patients who previously had surgery on the urethra or bladder
* Patients without clinical indication for continuous blood pressure monitoring with an intraarterial catheter

Where this trial is running

Hamburg and 1 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Urethral Perfusion IndexTissue PerfusionMicrocirculationurethral perfusion indextissue perfusionmicrocirculation
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.