Heart surgery immune cells under microscope
NCT ID NCT04299828
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at leftover blood samples from 100 patients having heart surgery to see how certain immune cells (monocytes) change during the procedure. The goal is to understand links between inflammation and blood clotting risks. No new treatments are being tested; it is purely observational.
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
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About 100 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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May 2022
- Expected to finish
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Dec 2026
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
Patients (all ages) undergoing complex cardiac surgical procedures with cardiopulmonary bypass (CPB) at Boston Children's Hospital.
- Ages
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Children (under 18), adults (18 to 64) and older adults (65 and over)
- Sex
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Anyone
- Healthy volunteers
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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: * Patients (all ages) undergoing complex cardiac surgical procedures with CPB. Exclusion Criteria: * undergoing an emergent procedure and do not have more than 1 hour ahead of time to review the consent * patient in a moribund condition American Society of Anesthesiology (ASA 5) -patient with a hematological and/or oncological disease * Jehovah witnesses.
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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.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Boston Children's Hospital
RECRUITINGBoston, Massachusetts, 02115, United States
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