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Hidden heart risk: tiny vessel damage may explain some heart attacks

NCT ID NCT05272618

Recruiting now Knowledge-focused Sponsor: Chonnam National University Hospital Source: ClinicalTrials.gov ↗

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looks at 150 adults who had a heart attack but whose main heart arteries were not blocked. Researchers will use special imaging and pressure tests to check for problems in the tiny blood vessels of the heart. The goal is to see if these microvascular issues lead to worse outcomes like another heart attack or heart failure. This is an observational study, so it does not test a new treatment but aims to improve understanding and future care.

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 better identify and treat heart attack patients whose arteries appear normal but have hidden microvascular issues.
What could go wrong
This is an observational study, not a treatment trial. It will not directly test any new therapy, and results may not change current practice immediately.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

coronary microvascular disorder coronary vasospasm MINOCA myocardial infarction

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

CORONARY MICROVASCULAR DYSFUNCTION MYOCARDIAL INFARCTION VASOSPASM, CORONARY

Contacts and locations

Locations

  • Chonnam National University Hospital

    RECRUITING

    Gwangju, Gwangju, 61469, South Korea

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