New heart artery measurements could sharpen diagnosis
NCT ID NCT00760630
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests new methods to measure pressure, blood flow, and blockage size in heart arteries. Researchers want to see if these measurements can better identify which blockages are serious enough to cause heart damage. The study involves people with known or suspected coronary artery disease who are already scheduled for a heart catheterization.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- FFR/CFR and IVUS catheters
- What this could lead to
- If successful, this could lead to more accurate diagnosis of heart artery blockages, helping doctors decide on the best treatment.
- What could go wrong
- This is a small, early-stage study with only 10 participants, so results may not apply to everyone. The new measurements may not prove better than current methods.
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
-
10 people
The number who actually took part.
- Started
-
Dec 2009
- Finished
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Feb 2012
- 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.
Who is studied
Patients with chest pain and suspected ischemia that needs to be assessed by a stress test
- Ages
-
18 to 100 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 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: * Abnormal Myocardial stress perfusion (SPECT) LV EF \> 25% * 18 years of age or above * Patients referred to a stress test by a Cardiologist * Acute Chest pain, as per patient input. * Risk Assessment with prior test results and/or previous history of known chronic stable CAD. * Borderline or discordant stress testing where obstructive CAD remains a concern. * New or worsening symptoms- Abnormal coronary angiography or abnormal prior stress imaging study. * Coronary stenosis or anatomic abnormality of uncertain significance. * In absence of reliable diagnostic information from another imaging modality. Exclusion Criteria: * Serum Creatinine \> 2.5 gm/dL * Type II HIT * Left ventricular ejection fraction less the 25% determined by gated SPECT imaging ( - LV \< or + to 25%) * Non-dialysis dependent chronic kidney disease with baseline serum creatinine greater than 2.5 gm/dL. * History of type II heparin-induced thrombocytopenia. * Significant co-morbid condition that is medically unstable and would make coronary angiography prohibitive or contraindicated. * Pregnant women. * Incapacitated for Consent
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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.
Contacts and locations
Locations
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Department of Veterans Affairs
Cincinnati, Ohio, 45220, United States
-
University Hospital
Cincinnati, Ohio, 45219, United States
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