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Sound waves may make heart stenting safer for High-Risk patients
NCT ID NCT04854070
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study compares two ways to guide heart stenting in people with complex coronary artery disease: using an ultrasound probe inside the artery (IVUS) versus standard X-ray guidance (angiography). About 2,020 patients with tough-to-treat blockages were randomly assigned to one method. The goal is to see if IVUS reduces the chance of heart-related death, heart attack, or the need for repeat procedures.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Intravascular ultrasound (IVUS) device
- What this could lead to
- If IVUS guidance proves superior, it could become the new standard for complex heart stenting, reducing deaths and heart attacks.
- What could go wrong
- This is a post-marketing study, not a new drug; the benefit may be small or not apply to all patients. The results are still being analyzed.
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
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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
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2,020 people
The number who actually took part.
- Started
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Nov 2021
- Finished
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Aug 2025
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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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: All of the following: 1. The patient must be ≥18 years of age 2. Patients with an indication for PCI of at least one lesion satisfying any of the following criteria: 1. Angiographic heavy calcification 2. Ostial lesions 3. True bifurcation lesions involving side-branches \>2.5mm 4. Left main lesions 5. Chronic total occlusion 6. In-stent restenosis 7. Long-lesions (estimated stent length \> 28mm) OR Patient with an indication for PCI for any lesion and in need for elective mechanical circulatory support assisted PCI 3. Presenting with silent ischemia, stable angina, unstable angina or non-ST-elevation acute coronary syndrome (NSTE-ACS) 4. All lesions must be suitable for treatment with the Synergy stent system, Synergy Megatron system, or other Synergy platform iteration 5. The patient is willing and able to cooperate with study procedures and follow-up until study completion 6. Subject is able to confirm understanding of risks, benefits and treatment alternatives and he/she provides informed consent prior to any protocol-related procedure, as approved by the appropriate Ethics Committee Exclusion Criteria: Any of the following: 1. ST-elevation myocardial infarction, cardiogenic shock 2. Known untreated severe valvular heart disease 3. IVUS is strictly required for pre-PCI lesion severity assessment 4. Requiring PCI in a diseased aorto-coronary bypass 5. Known contraindication or hypersensitivity to everolimus, platinum-chromium, or to anticoagulants 6. Absolute contraindications or allergy that cannot be pre-medicated, to iodinated contrast or to antiplatelet drugs, including both aspirin and P2Y12 inhibitors 7. Non-cardiac co-morbidities with a life expectancy less than 1 year 8. Currently participating in another trial that is not yet at its primary endpoint. The patient is not allowed to participate in another investigational device or drug study until the trial primary endpoint time point is achieved and may only be enrolled once in the study 9. Women of childbearing potential who do not have a negative pregnancy test within 7 days before the procedure and women who are breastfeeding 10. Subject belongs to a vulnerable population (per investigator's judgment) or subject unable to read or write
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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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Albert Schweitzer hospital
Dordrecht, Netherlands
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Bellvitge University Hospital
Barcelona, Spain
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CHRU Tours - HopitalTrousseau
Tours, France
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CHU
Charleroi, Belgium
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CHU
Toulouse, France
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Cardiovascular Institute of Grenoble, GHM
Grenoble, France
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Catharina hospital
Eindhoven, Netherlands
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Centre Cardiologique du Nord Saint-Denis
Saint-Denis, France
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Charite Universitatsmedizin Berlin
Berlin, Germany
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Clinique Pasteur
Toulouse, France
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Clinique Saint-Augustin
Bordeaux, France
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Erasmus University Medical Center
Rotterdam, Netherlands
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Golden Jubilee National Hospital
Glasgow, United Kingdom
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Heart Center Dresden
Dresden, Germany
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Hopital Privé Jacques Cartier
Massy, France
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Hospital Clinic de Barcelona
Barcelona, Spain
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Hospital la Paz
Madrid, Spain
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Humanitas Research Hospital
Milan, Italy
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John Radcliffe Hospital
Oxford, United Kingdom
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La Princesa University Hospital
Madrid, Spain
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Marques de Valdecilla University Hospital
Santander, Spain
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MediClin Heartcenter Lahr
Lahr, Germany
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Noordwest Hospital Group
Alkmaar, Netherlands
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OLVZ
Aalst, Belgium
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Ospedale degli infermi di Rivoli
Rivoli, Italy
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Ospedale dell'Angelo
Venezia, Italy
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Reina Sofia Hospital
Córdoba, Spain
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Royal Victoria Hospital
Belfast, United Kingdom
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Segeberger Kliniken
Bad Segeberg, Germany
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St. George's University Hospital
London, United Kingdom
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University Clinical Hospital of Valladolid
Valladolid, Spain
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University Hospital Gasthuisberg
Leuven, Belgium
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University of Ferrara
Ferrara, Italy
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University of Giessen
Giessen, Germany
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Universitätsklinikum Frankfurt
Frankfurt, Germany
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VuMC
Amsterdam, Netherlands
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ZOL Sint-Jan
Genk, Belgium
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