Eye ultrasound may reveal brain risks during heart surgery
NCT ID NCT07420738
First seen Jun 25, 2026 · Last updated Aug 06, 2026 · Updated 4 times
Summary
This study will compare two types of heart-lung machines used during coronary bypass surgery to see how they affect blood flow to the brain. Researchers will measure brain pressure using an eye ultrasound and brain oxygen levels with a forehead sensor in 70 patients. The goal is to find out which machine technique is safer for the brain during surgery.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- What this could lead to
- If successful, this could help doctors choose safer heart-lung machine methods to protect the brain during bypass surgery.
- What could go wrong
- This is a small, early-stage observational study (70 people) that measures markers, not patient outcomes. It may not lead to clear changes in practice.
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 70 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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May 2026
- Expected to finish
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May 2027
An estimate. End dates often move.
- Lead sponsor
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A government agency
The lead sponsor is a government body.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
The study population consists of adult patients aged 18 years and older with American Society of Anesthesiologists (ASA) physical status II-III who are scheduled to undergo elective coronary artery bypass graft surgery with the use of extracorporeal circulation. All participants will be treated according to standard clinical practice in a tertiary cardiac surgery center and will provide written informed consent prior to enrollment.
- Ages
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18 to 75 years
- Sex
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Anyone
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: * Age ≥ 18 years * Scheduled for elective coronary artery bypass graft (CABG) surgery * American Society of Anesthesiologists (ASA) physical status II-III * Planned use of extracorporeal circulation during surgery * Ability to provide written informed consent Exclusion Criteria: * Age \< 18 years * ASA physical status other than II-III * Emergency surgery * Pregnancy * History of neurological disease affecting consciousness or decision-making capacity * History of psychiatric disease affecting decision-making capacity * History of head trauma within the previous 24 hours * Presence of carotid artery stenosis or significant carotid artery disease * Coagulation disorders (INR \> 1.25, aPTT \> 35 s, or platelet count \< 100,000/μL) * Reoperation (redo cardiac surgery) * Congestive heart failure * Chronic kidney failure * Sepsis * Hypoxia * Ocular trauma * Optic nerve pathology
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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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Kosuyolu High Specialization Training and Research Hospital
RECRUITINGIstanbul, 34870, Turkey (Türkiye)
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Heart bypass surgeons test which vein layout keeps grafts open
- A soft patch that watches your heart beat in real time
- Zapping the ear: a new way to stop Post-Surgery heart rhythm problems?
- Squeeze a ball, lower your blood pressure? heart trial puts handgrip exercise to the test
- New heart scan aims to spot hidden plaque before it strikes
- Can a kidney ultrasound scan warn of kidney damage after heart bypass surgery?