Coronary Artery Disease, Coronary Stenosis, Myocardial Ischemia
Conditions
Keywords
coronary stenosis, fractional flow reserve
Brief summary
The aim of the study is to compare different devices available to measure fractional flow reserve (FFR) in coronary arteries.
Detailed description
The decision to perform a percutaneous coronary intervention (PCI) is usually based on angiographic results alone. Angiography can be used for the visual evaluation of the inner diameter of a vessel. Visual evaluation is limited by inter-individual variability. Fractional flow reserve provides a functional evaluation, by measuring the pressure decline caused by a vessel narrowing. The original studies validating the use of FFR were conducted with only one device (St-Jude Medical®). Recently, new FFR devices have been commercialized but have not yet been compared.
Interventions
Comparison of different devices measuring fractional flow reserve
Sponsors
Study design
Eligibility
Inclusion criteria
* Patients hospitalized at Caen University Hospital for coronary angiography * Coronary stenosis needing FFR evaluation according to recommendations * More than 18 years old * Clinically stable * De novo coronary stenosis * Affiliated to social security * Informed consent signed
Exclusion criteria
* Unstable patients defined by acute coronary syndrome \< 7 days * Contre-indication to adenosine administration (asthma, allergy, high grade atrio-ventricular bloc without pace maker) * History of coronary artery bypass * intra-stent restenosis * Patient not capable of understanding the study * Informed consent not signed
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Simultaneous FFR measure SJM and ACIST | Immediately | Correlation between simultaneous measures with St Jude medical FFR device and ACIST device |
| Simultaneous FFR measure Boston Scientific and ACIST | Immediately | Correlation between simultaneous measures with BOSTON Scientific FFR device and ACIST device |
| Simultaneous FFR measure Boston Scientific and SJM | Immediately | Correlation between simultaneous measures with BOSTON Scientific FFR device and St Jude Medical device |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| FFR SJM or Boston alone versus simultaneous with ACIST | Immediately | Correlation between SJM and Boston Scientific FFR measurements alone and simultaneous measure with ACIST |
| Clinical concordance | Immediately | Concordance between FFR values \>0.80 or \<=0.80 |
| Drift of the signal | immediately | variation between the initial measure in the aorta (equalization) and final measure |
Countries
France