Blood test may spot brain fog risk after heart surgery
NCT ID NCT04679259
First seen Jan 25, 2026 · Last updated Jun 20, 2026 · Updated 21 times
Summary
This study looked at whether certain substances in the blood can help predict memory or thinking problems that sometimes occur after heart surgery. Researchers took blood samples from 82 adults before and after surgery and measured levels of specific proteins. They also tested patients' thinking skills and checked for confusion. The goal was to see if these blood markers could serve as early warning signs for cognitive decline after surgery.
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Contacts and locations
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Locations
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SMG-SNU Boramae Medical Center
Seoul, Select State/Province, 07061, South Korea
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 lead to a simple blood test to identify patients at risk for cognitive decline after heart surgery, allowing for earlier support.
What could go wrong
This was a small, completed study that only looked for a link between blood markers and cognitive problems. It does not test a treatment, and the results may not apply to all patients.
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.