Could a simple blood test guard against organ damage in heart surgery?
NCT ID NCT05189262
First seen Aug 21, 2026 ยท Last updated Aug 21, 2026
Summary
This study looks at how red blood cells break down during prolonged heart-lung bypass in cardiac surgery, releasing free hemoglobin into the blood. Researchers will measure these levels and related proteins in adults undergoing complex heart procedures to see if they can predict kidney injury. The goal is to find safer limits and improve early detection of organ damage.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Blood and urine collection (no intervention)
- What this could lead to
- If successful, this could lead to better ways to monitor and protect patients from organ damage during heart surgery.
- What could go wrong
- This is an observational study, so it won't directly test a treatment. The findings may not apply to all patients or surgeries.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Participants
-
111 people
The number who actually took part.
- Started
-
Mar 2022
- Expected to finish
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Dec 2027
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
Research Participants will include approximately 90 adult (\>/=18 years of age to 75 years of age) medium to high risk patients. Both Male and female subjects who are undergoing complex cardiac surgery requiring, heart valve replacement, or CABG surgery requiring cardiopulmonary bypass \>1hr will be eligible for enrollment at the University of Maryland Medical Center (UMMC) in Baltimore, MD. This study is a prospective observational investigation.
- Ages
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18 to 88 years
- Sex
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Anyone
- Healthy volunteers
-
Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Admitted to UMMC for cardiac procedure * Age: \>/=18 y.o TO 88 y.o. * Undergoing CPB \>1hr for the following surgeries (a) complex cardiac surgery (b) heart valve replacement surgery OR (c) CABG surgery. Exclusion Criteria: * Pregnant * Non English speaking * Unable to consent or have Legally Authorized Representative (LAR) assent to study
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Center for Blood Oxygen Transport and Hemostasis
Baltimore, Maryland, 21201, United States
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Other studies related to the condition(s) this trial covers.
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