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Heart attack mystery: open arteries, hidden damage?

NCT ID NCT02270359

Knowledge-focused Sponsor: NYU Langone Health Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing This study
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 26, 2026 · Last updated Jul 31, 2026 · Updated 2 times

Summary

This study looks at 15 people who had a heart attack but whose arteries were not blocked. Researchers use two types of imaging—one inside the artery and one MRI of the heart—to find hidden plaque or damage that might explain the attack. The goal is to better understand these puzzling cases, not to test a new treatment.

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 study could help doctors better understand and diagnose heart attacks in people whose arteries appear open, potentially leading to improved treatments.
What could go wrong
This is a very small, early-stage observational study with only 15 participants. It is not testing a treatment, so it cannot directly lead to a cure or therapy.

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.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

15 people

The number who actually took part.

Started

Apr 2014

Expected to finish

Dec 2027

An estimate. End dates often move.

Lead sponsor

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.

Ages

21 to 99 years

Sex

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

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Acute ischemic symptoms compatible with diagnosis of acute coronary syndrome (ACS) (chest pain or anginal equivalent symptoms at rest or new onset exertional anginal equivalent symptoms) * Objective evidence of myocardial infarction (either or both of the following): Elevation of troponin to above the laboratory upper limit of normal (ULN) or ST segment elevation of ≥1mm on 2 contiguous ECG leads * Willing to provide informed consent and comply with all aspects of the protocol * Age ≥ 21 years Exclusion Criteria: * Stenosis ≥50% of any major epicardial vessel on invasive angiography, as determined by the angiographer at the time of clinically ordered cardiac cath. * History of known obstructive CAD at angiography, including history of percutaneous coronary intervention (PCI) or coronary artery bypass grafting (CABG) * Recent use of vasospastic agents, such as cocaine, triptans, ergot alkaloids (≤1 month) * Alternate explanation for troponin elevation, such as hypertensive urgency, acute exacerbation of heart failure, chronic elevation due to kidney disease, pulmonary embolism, cardiac trauma * Coronary dissection apparent on angiography * Excessive coronary tortuosity which, in the opinion of the angiographer, increases the risks of OCT * eGFR\<30 or contraindication to additional contrast needed for OCT in the opinion of the angiographer or treating physician * Contraindication to MRI (including but not limited to MRI-incompatible metal implants or foreign bodies) * Pregnancy * Thrombolytic therapy for STEMI (qualifying event)

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Conditions

The condition(s) this trial relates to.

myocardial infarction

As listed by the trial registrant

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

Myocardial infarction

Contacts and locations

Locations

  • NYU Langone Medical Center

    New York, New York, 10016, United States

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