Understanding how kidney injury develops after heart surgery

Methodology Study in Patients Undergoing Cardiac Surgery With Cardiopulmonary Bypass to Investigate Mechanisms Involved in Cardiac Surgery-associated Acute Kidney Injury.

NA · Bayer · NCT06772025

This study is trying to understand how kidney injury happens after heart surgery in patients who use a heart-lung machine, to help improve care for this common problem.

Quick facts

PhaseNA
Study typeInterventional
Enrollment200 (estimated)
Ages18 Years and up
SexAll
SponsorBayer (industry)
Drugs / interventionschemotherapy, immunotherapy
Locations4 sites (Bad Oeynhausen, North Rhine-Westphalia and 3 other locations)
Trial IDNCT06772025 on ClinicalTrials.gov

What this trial studies

This study aims to investigate the mechanisms behind post-operative acute kidney injury (PO-AKI) in patients undergoing heart surgery with the use of a heart-lung machine. Researchers will analyze biomarkers in participants who develop PO-AKI within a week after surgery, focusing on the early hours and days post-operation. The study will include patients scheduled for specific cardiovascular surgeries involving cardiopulmonary bypass, and will not involve any investigational treatments. By understanding the development of PO-AKI, the study seeks to improve treatment and prevention strategies for this common complication.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18 and older scheduled for specific cardiovascular surgeries involving cardiopulmonary bypass and with chronic kidney disease.

Not a fit: Patients undergoing emergency surgeries or those with severe anemia or systemic infections may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to better prevention and treatment strategies for post-operative acute kidney injury in heart surgery patients.

How similar studies have performed: While the study focuses on understanding mechanisms of PO-AKI, similar studies have shown promise in identifying risk factors and biomarkers related to kidney injury in surgical settings.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Participant must be at least 18 years of age at the time of signing the informed consent form (ICF).
* Participants who are scheduled for hospital admission for any of the following cardiovascular surgery interventions, alone or in combination, involving cardiopulmonary bypass (CPB):

  * Aortic, mitral, or tricuspid valve surgery (repair or replacement)
  * Aortic surgery
  * ≥3 coronary artery bypass grafts
* Participant with: chronic kidney disease (CKD): 30 ≤ estimated glomerular filtration rate (eGFR) \< 90 mL/min/1.73 m\^2

Exclusion Criteria:

* Emergency surgery situation
* Anemia - hemoglobin \<10 g/dL
* Clinical signs of systemic infection or other infection requiring anti-infective treatment (viral, bacterial, fungal, parasitic; single-dose prophylaxis allowed)
* Systemic immunosuppressive or anti-inflammatory treatment including corticosteroids \>10 mg prednisolone equivalent/day
* Any anti-cancer treatment within 3 months (e.g. immunotherapy, chemotherapy, radiotherapy)
* Major surgery within 2 months
* AKI within the last month
* Prior renal transplants or RRT
* Planned use of contrast media within 5 days prior to surgery or during surgery
* Patient included in an interventional clinical trial involving a pharmacological intervention
* Any reason that would make participation unadvisable, at the discretion of the investigator.
* Autoimmune disorders such as anti-glomerular basement membrane (anti-GBM) diseases, systemic lupus erythematosus, chronic rheumatic heart diseases, acute rheumatic heart pericarditis, endocarditis, myocarditis, rheumatic mitral valve diseases, rheumatic aortic valve diseases

Where this trial is running

Bad Oeynhausen, North Rhine-Westphalia and 3 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.

View on ClinicalTrials.gov →

Conditions: Cardiac Surgery-associated Acute Kidney Injury, CSA-AKI, Cardiac surgery, Cardiopulmonary bypass

Last reviewed 2026-05-15 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.