- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02811796
Angio-based Fractional Flow Reserve to Predict Adverse Events After Stent Implantation (HAWKEYE)
Prospective Validation of the Angio-based Fractional Flow Reserve (Quantitative Flow Ratio, QFR) System to Discriminate Patients at Risk of Adverse Events After Stent Implantation.
Study Overview
Status
Intervention / Treatment
Detailed Description
Fractional flow reserve (FFR) allows to evaluate the functional significance of coronary artery lesions, through the ratio of the mean coronary artery pressure after the stenosis to the mean aortic pressure during maximum hyperaemia. The actual widely accepted cutoff value is 0.80. Below this value, an intermediate coronary lesion is considered significant and its treatment with percutaneous coronary intervention (PCI) is justified.
The measurement FFR after stent implantation has a strong predictive value with respect to death, myocardial infarction, or need for repeat revascularization of the target vessel within 6 months. The higher the FFR, the lower the event rate. FFR cut-off of 0.90 might be a useful indicator in daily practice for optimal physiologic stent implantation. Nevertheless, the use of the FFR in the post stenting , is relatively low, because of costs of the pressure wire and the adverse effects related to the use of adenosine.
A new method (QFR by Medis medical imaging) for evaluation of the functional significance of coronary stenosis is based on computer calculation of the FFR value. This calculation is performed by analysing the coronary angiogram and thus reduces or potentially eliminates the need for measuring FFR by pressure wires. The QFR method combines a 3D reconstructions of the target vessel based on two angiographic projections and the contrast flow velocity to compute the "FFR value". To perform QFR the investigators will acquire two angiographic projections with angle >25 degree that allow the 3D reconstruction of the vessel (see values below).
Projections for left main (LM) and proximal left anterior descending (LAD) or proximal left circumflex (LCX): right anterior oblique (RAO) 20, Caudal 45 and anterior-posterior (AP), Caudal 10
Projections for LAD/diagonal: AP, Cranial 45 and RAO 35, Cranial 20
Projections for LCX/obtuse marginal (OM): left anterior oblique (LAO) 10, Caudal 45 and RAO 25, Caudal 25
Projections for Proximal+Mid right coronary artery (RCA): LAO 45, caudal (CAUD) 0 and AP, CAUD 0
Projections for postero-lateral artery and posterior-descending artery (PLA/PDA): LAO 45, CAUD 0 and LAO 30, CAUD 30
Finally, the investigators will assess the relationship between QFR value and adverse events. We will assess the best QFR value able to discriminate the cumulative occurrence of adverse events. In the study, we will include also ST-segment elevation myocardial infarction patients. This subset of patients will be analysed as independent cohort to obtain preliminary results and will be analysed in a independent study
Study Type
Enrollment (Actual)
Contacts and Locations
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
-successfull percutaneous coronary intervention and stent implantation
Exclusion Criteria:
- inability to provide consent
- inability to guarantee at least 1-year follow-up
- thrombolysis in myocardial infarction (TIMI) flow <3
- life expectancy <1 year
- previous coronary artery bypass graft
- atrial fibrillation
- ongoing ventricular arrhythmias
- significant and persistent tachycardia (heart rate >100 bpm)
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
angio-based FFR estimation
The investigators will include all patients receiving successful coronary stent implantation.
In these patients the investigators will acquire specific angiograms to permit angio-based FFR (QFR) calculation.
An independent corelab will estimate the QFR value.
This value will be related to prognosis to verify if it is able to discriminate those at higher risk of adverse events.
|
The investigators will acquire specific angiograms to permit angio-based FFR (QFR) calculation.
An independent corelab will estimate the QFR value.
This value will be related to prognosis to verify if it is able to discriminate those at higher risk of adverse events.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Device-oriented cardiac events
Time Frame: 1-year
|
cumulative occurrence of cardiac death, target vessel myocardial infarction, target lesion revascularization
|
1-year
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
cardiac death
Time Frame: 1-year
|
cumulative occurrence of cardiac death
|
1-year
|
all-cause mortality
Time Frame: 1-year
|
cumulative occurrence of all-cause mortality
|
1-year
|
any myocardial infarction
Time Frame: 1-year
|
cumulative occurrence of any myocardial infarction
|
1-year
|
target vessel revascularization
Time Frame: 1-year
|
cumulative occurrence of target vessel revascularization
|
1-year
|
stent thrombosis
Time Frame: 1-year
|
cumulative occurrence of definite, probable and possible stent thrombosis
|
1-year
|
hospital admission for all causes
Time Frame: 1-year
|
cumulative occurrence of hospital admission for all causes
|
1-year
|
Collaborators and Investigators
Sponsor
Publications and helpful links
General Publications
- Biscaglia S, Uretsky BF, Tebaldi M, Erriquez A, Brugaletta S, Cerrato E, Quadri G, Spitaleri G, Colaiori I, Di Girolamo D, Scoccia A, Zucchetti O, D'Aniello E, Manfrini M, Pavasini R, Barbato E, Campo G. Angio-Based Fractional Flow Reserve, Functional Pattern of Coronary Artery Disease, and Prediction of Percutaneous Coronary Intervention Result: a Proof-of-Concept Study. Cardiovasc Drugs Ther. 2022 Aug;36(4):645-653. doi: 10.1007/s10557-021-07162-6. Epub 2021 Apr 8.
- Biscaglia S, Tebaldi M, Brugaletta S, Cerrato E, Erriquez A, Passarini G, Ielasi A, Spitaleri G, Di Girolamo D, Mezzapelle G, Geraci S, Manfrini M, Pavasini R, Barbato E, Campo G. Prognostic Value of QFR Measured Immediately After Successful Stent Implantation: The International Multicenter Prospective HAWKEYE Study. JACC Cardiovasc Interv. 2019 Oct 28;12(20):2079-2088. doi: 10.1016/j.jcin.2019.06.003. Epub 2019 Sep 25.
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Other Study ID Numbers
- 190678
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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