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| Name | Class |
|---|---|
| The Korean Society of Cardiology | OTHER |
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Study for developing techniques to evaluate coronary artery hemodynamic profiles by conventional angiography without more dedicated measuring devices.
* Methods: Compare TIMI frame count, coronary clearance frame count in baseline/hyperemic coronary angiography with FFR, CFR, IMR and derive correlation, receiver-operating characteristic curve to find new tools estimating coronary hemodynamics by conventional angiography only.
A TIMI frame count is measured by counting the angiographic image cine frames during a head of radiocontrast column runs from the entry of left anterior descending artery (LAD) to the distal end.
A coronary clearance frame count is measured by counting the angiographic image cine frames during a tail of radiocontrast column runs from the entry of LAD to the distal end.
Baseline angiography is performed without any stimulation and hyperemic angiography is performed after intracoronary injection of adenosine 300ug or nicorandiol 2mg.
Inclusion criteria
Exclusion criteria
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Hyperemic stimuli | Experimental | Hyperemic stimuli of coronary flow by adenosine or nicorandil injection |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Hyperemic stimuli | Drug | Hyperemic simuli of coronary flow by adenosine or nicorandil injection |
|
| Measure | Description | Time Frame |
|---|---|---|
| TIMI frame count | frame count between the beginning and end of contrast column head | Imediately after the procedure |
| Coronary Clearance Frame Count | frame count between the beginning and end of contrast column tail | Imediately after the procedure |
| Index of microcirculatory resistance | derived from distal coronary pressure by transit time | During the procedure |
| Measure | Description | Time Frame |
|---|---|---|
| Fractional flow reserve | measured by pressure wire | During the procedure |
| Coronary flow reserve | measured by pressure wire by thermodilution technique |
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Inclusion criteria
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| Name | Affiliation | Role |
|---|---|---|
| Bong-Ki Lee, MD, PhD | KangWon National University Hospital | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Kangwon National University Hospital | Chuncheon | Gangwon-do | 24289 | South Korea |
Could be shared after necessary discussions
after publication
Investigator who I permitted
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| ID | Term |
|---|---|
| D003324 | Coronary Artery Disease |
| ID | Term |
|---|---|
| D003327 | Coronary Disease |
| D017202 | Myocardial Ischemia |
| D006331 | Heart Diseases |
| D002318 | Cardiovascular Diseases |
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Patients who underwent coronary angiography and further hyperemic stimui
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| During the procedure |
| D001161 |
| Arteriosclerosis |
| D001157 | Arterial Occlusive Diseases |
| D014652 | Vascular Diseases |