Understanding oxygen use and organ injury after heart surgery
Official title: Oxygen Consumption, Early Postoperative Hypoperfusion and Organ Injury After Cardio-pulmonary Bypass: a Prospective Observational Study
Run by Uppsala University Hospital · NCT06930443 · Data updated 2026-11-12
This study is trying to see how oxygen use after heart surgery affects organ health in adults to improve care after the operation.
Quick facts
| Study type | Observational |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 65 (estimated) |
| Sponsor | Uppsala University Hospital Academic / other |
| Locations | 1 site (Uppsala, Sweden) |
| Status | Recruiting |
| Started | May 5, 2025 |
| Main results expected | December 2025 |
| Study ends | February 2026 |
| Registry record updated | May 11, 2025 |
| Trial ID | NCT06930443 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are adults over 18 years old scheduled for elective cardiac surgery requiring cardiopulmonary bypass.
✕Probably not a fit
Patients with severe anemia, high lactate levels before surgery, or those requiring intensive care may not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This observational study aims to investigate the relationship between oxygen consumption, blood flow issues, and organ injury in patients undergoing cardiac surgery with cardiopulmonary bypass. It focuses on individuals over 18 years old and will measure oxygen consumption using indirect calorimetry in the early hours post-surgery. Researchers will also monitor lactate levels and assess signs of organ injury in the heart, kidneys, liver, brain, and gut. The study will include 65 participants and aims to provide insights into postoperative care.
Why it matters
Potential benefit: If successful, this study could improve postoperative care and outcomes for patients undergoing cardiac surgery.
How similar studies have gone: While similar studies have explored oxygen consumption and organ injury, this specific observational approach is relatively novel.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Elective cardiac surgery requiring cardiopulmonary bypass Exclusion Criteria: * Combined, redo or annuloplasty procedures * Surgical procedures involving other vascular cannulation than standard direct, such as bicaval or femoral cannulation * Preoperative hyperlactatemia (\>2mmol/L) or anaemia (Hb \<90 g/dL) * Preoperative need for supplementary oxygen or ICU care * Consent not obtainable.
Where it's running
-
Uppsala University Hospital
Uppsala, Sweden, Sweden Recruiting
Study contacts
- Study coordinator: Julia Jakobsson MD PhD
- Email: julia.o.jakobsson@akademiska.se
- Phone: +46-18-610 00 00
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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.