- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT05504031
Hybrid Revascularization Versus Coronary Artery Bypass Grafting
Hybrid Revascularization Versus Coronary Artery Bypass Grafting in Patients With Multi-vessel Coronary Artery Disease. A Randomized Clinical Trial.
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Background
Cardiovascular diseases, mainly coronary artery disease (CAD), are the leading causes of death worldwide. CAD is characterized by the narrowing or blockage of blood flow in the coronary arteries often necessitating complex interventions like coronary artery bypass grafting (CABG) or percutaneous coronary intervention (PCI) with drug-eluting stents. The preferred revascularization strategy depends on several characteristics, one being the number of diseased vessels. Multivessel coronary artery disease (MVD) is defined as stenosis of at least two major coronary arteries.
Over the years, several large trials have concluded that CABG and PCI with newer-generation drug-eluting stents are both associated with improved survival rates compared to medical therapy.
CABG is still regarded as the gold standard for complex multivessel disease, with the cornerstone being the in-situ left internal mammary artery (LIMA) anastomosed to the left anterior descending artery (LAD).1 Current guidelines recommend CABG or PCI with equipoise in patients with one-vessel proximal LAD stenosis, two-vessel disease with proximal LAD stenosis, left main disease or three-vessel disease with lower complexity.2 The LIMA graft, with its excellent patency, has been shown to outperform PCI of the LAD and is in part responsible for the apparent success and survival benefit of CABG.3 However, saphenous vein grafts, the most common graft for non-LAD targets perform rather poorly, with graft failure ranging as high as 43%, 18 months after surgery.4 PCI with DES, especially with intravascular imaging, is documenting meagre failure rates and may consequently offer better results in non-LAD vessels than CABG with vein grafts does.5
Despite its survival benefits, the CABG comes at the cost of a full sternotomy, necessitating longer rehabilitation. Patients may prefer less invasive treatment options if these are feasible and have consistent long-term results. The minimally invasive coronary artery bypass (MIDCAB) procedure was developed as a less invasive method for revascularization. MIDCAB allows for the grafting of the anterior vessels through a small left anterior thoracotomy without the use of extracorporeal circulation. Thus, ensuring vital revascularization with a lesser trauma.
Complete revascularization has been established as the most important factor for survival. Recent data have showed comparable 10-year mortality in patients achieving this goal with either PCI or CABG.6
Hybrid coronary revascularization was developed to combine the best parts of the two revascularization techniques, consisting of a minimally invasive grafting of the LIMA to LAD, and PCI of all functionally significant non-LAD stenoses. Theoretically, patients may obtain the survival benefit from the LIMA-LAD graft, from a less invasive approach and avoidance of vein graft failures.
However, to this date, hybrid coronary revascularization is supported by very limited data. Only three small, randomized feasibility trials have been conducted, which all stated that the procedure is feasible but that larger randomized trials are necessary to determine if it is a suitable alternative to treating multivessel disease.7-9
Trial objective
The trial objective is to assess the beneficial and harmful effects of hybrid coronary revascularization versus coronary artery bypass graft surgery in patients with multivessel coronary artery disease.
Trial design
The trial investigaors will conduct a multicentre randomized superiority trial comparing hybrid coronary revascularization versus conventional CABG surgery in patients with multi-vessel coronary artery disease. Patients will be randomized 1:1 to hybrid coronary revascularization or CABG. The randomisation will be stratified according to clinical site and diabetes (yes/no).
Selection of participants
All patients with multi-vessel coronary disease referred for a CABG will be discussed during the heart team conference and considered for participation in the trial.
Inclusion criteria
- Written informed consent
- ≥ 18 years of age
- Functionally significant MVD, defined as ≥ 70% diameter stenosis by visual estimation or functionally significant stenosis (FFR < 0.80, non-hyperaemic index (iFR) < 0.89) in at least two of the major epicardial vessels or major side branches
- Patient history reviewed by both cardiac surgeon and cardiologist who in agreement find both CABG and hybrid revascularisation indicated and technically feasible with an expectation of complete revascularisation of all functionally significant stenoses in the LAD and at least one other coronary artery ≥ 2.5mm in diameter or left main bifurcation stenosis with functionally significant stenoses in both the LAD and left circumflex artery.
Exclusion criteria
- Chronic kidney disease with estimated glomerular filtration rate < 20 mL/min/kg
- Pregnancy
- Contraindications to the use of dual antiplatelet therapy
- STEMI within 1 month
- Indication for acute revascularization
Trial intervention
Experimental intervention:
Coronary revascularization will be conducted as a staged intervention. First, the MIDCAB will be conducted through a small left anterior thoracotomy, with endoscopic LIMA harvest and off-pump LIMA to LAD-grafting. Second, PCI with implantation of contemporary DES of all non-LAD lesions will be conducted within 4 weeks of the surgical procedure. Patients will receive dual antiplatelet therapy (DAPT) according to local routine and international guidelines.
A "reverse hybrid" with PCI preceding MIDCAB is also an option in patients with sub-acute coronary syndrome or CTO. Surgery will be conducted 3 months after PCI when it is safe to pause DAPT. PCI of CTO, guided by viability tests, may further be staged at up to 30 days after MIDCAB surgery.
Control intervention:
Coronary revascularization will be conducted as a conventional CABG, through a sternotomy, on- or off-pump with grafting of all target vessels, according to local best practice. All graft types are permitted and, therefore, surgeons decide their own specific graft strategy.
CABG, MIDCAB, and PCI are all standard procedures performed routinely at the hospitals. Therefore, there is no expected increased risk for trial participants no matter which group they are randomized to.
The statistical analysis will adhere to the intention-to-treat principle, meaning that participants will be analyzed based on their originally assigned groups even if they undergo a crossover to other interventions.
Outcome measures
Primary outcome
• A composite outcome of either all-cause mortality, a diagnosis of myocardial infarction, a diagnosis of stroke, or any unplanned hospitalization at 12 months postoperatively.
Secondary outcomes
- Periprocedural complications defined as periprocedural myocardial infarction, stroke, unplanned re-intervention, BARC 3-5 bleeding complications10, or surgical wound infection.
- Cardiovascular mortality
- Hospital free days within 90 days after randomization
- Angina frequency using the Seattle Angina Questionnaire11
- Health-related quality of life using EQ-5D12
Exploratory outcomes
- Serious adverse events (dichotomous). We will use the International Conference on Harmonisation of technical requirements for registration of pharmaceuticals for human use-Good Clinical Practice (ICH-GCP) definition of a serious adverse event, which is any untoward medical occurrence that resulted in death, was life-threatening, required hospitalisation or prolonging of existing hospitalisation and resulted in persistent or significant disability or jeopardised the participant.
- Major Adverse Kidney Events to 30 days (MAKE30), defined as either death, new renal replacement therapy, or persistent renal dysfunction (creatinine at discharge or day 30 ≥ 200% of the baseline serum creatinine value)
- Post-pericardiotomy syndrome (diagnosed by two of the following being present: fever without alternative cause, pleuritic chest pain, friction rub on auscultation and evidence of new or worsening pericardial or pleural effusion)
- Postoperative pain
- Need for reoperation
- Prolonged intubation (> 48 hours)
- Acute kidney injury within 48 hours, defined by the KDIGO criteria
- Biomarkers during hospital stay (e.g. CK-MB, troponins, creatinine, haemoglobin)
- Length of stay
- Urgent revascularization or myocardial infarction
- Admission for new onset of heart failure
- Completeness of index revascularization
- Target vessel failure
- Target vessel revascularization
- Any repeat revascularization
- Definite stent thrombosis
- Atrial fibrillation (AF) within 3 months of revascularization (AF will be handled according to local practice)
- Sternal wound infections - superficial and deep
- Sternal wound dehiscence
- New York Heart Association (NYHA) class
- Healthcare costs
- Major arrhythmia within 30 days (supraventricular tachycardia requiring cardioversion, ventricular tachycardia or fibrillation requiring treatment, or bradyarrhythmia requiring temporary or permanent pacemaker)
- Graft failure assessed on cardiac computed tomography (CT) at 1 year (if the procedure is conducted)
Sample size and power estimation
Provided that the incidence of all-cause mortality, a diagnosis of myocardial infarction, a diagnosis of stroke, or hospitalization in the control group is equal to 55%, an absolute risk reduction of 10% (corresponding to a relative risk reduction of 18.2%), α=0.05, beta=0.10 (giving a power of 90%) we will need 524 participants in the intervention and in the control group. Notably, a 10% absolute risk reduction corresponds to an incidence of either all-cause mortality, a diagnosis of myocardial infarction, a diagnosis of stroke, or hospitalization equal to 45% in the experimental intervention group.
Study Type
Enrollment (Estimated)
Phase
- Not Applicable
Contacts and Locations
Study Contact
- Name: Erika Nodin, MD
- Phone Number: 004535457477
- Email: enod0001@regionh.dk
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Inclusion Criteria:
- Written informed consent
- ≥ 18 years of age
- Functionally significant MVD, defined as ≥ 70% diameter stenosis by visual estimation or functionally significant stenosis (FFR < 0.80, non-hyperaemic index (iFR) < 0.89) in at least two of the major epicardial vessels or major side branches
- Patient history reviewed by both cardiac surgeon and cardiologist who in agreement find both CABG and hybrid revascularisation indicated and technically feasible with an expectation of complete revascularisation of all functionally significant stenoses in the LAD and at least one other coronary artery ≥ 2.5mm in diameter or left main bifurcation stenosis with functionally significant stenoses in both the LAD and left circumflex artery.
Exclusion Criteria:
- Chronic kidney disease with estimated glomerular filtration rate < 20 mL/min/kg
- Pregnancy
- Left main stenosis without additional functionally significant stenoses in both the LAD and the LCX
- Contraindications to the use of dual antiplatelet therapy
- STEMI within 1 month
- Indication for acute revascularization
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Double
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Hybrid Group
Revascularization in the form of a combined MIDCAB (LIMA-LAD graft trough a minimal invasive left anterior thoracotomy) and PCI (of all non-LAD stenoses)
|
Coronary revascularization is conducted as a combined MIDCAB (LIMA-LAD grafting through a minimally invasive anterior left thoracotomy) and PCI (of all non-LAD stenoses)
|
Active Comparator: CABG Group
Conventional CABG through a sternotomy
|
Conventional revascularization with CABG of all significant stenoses through a sternotomy
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
A composite outcome of either all-cause mortality, a diagnosis of spontaneous myocardial infarction, a diagnosis of stroke, or any unplanned hospitalization
Time Frame: 12 months after randomization
|
A composite outcome of either all-cause mortality, a diagnosis of spontaneous myocardial infarction, a diagnosis of stroke, or any unplanned hospitalization
|
12 months after randomization
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Angina symptoms
Time Frame: 12 months after randomization
|
Angina symptoms measured using Seattle Angina Questionnaire
|
12 months after randomization
|
Health related quality of life
Time Frame: 12 months after randomization
|
Health related quality of life using EQ-5D
|
12 months after randomization
|
Hospital free days
Time Frame: 90 days after randomization
|
Hospital free days
|
90 days after randomization
|
Procedural complications
Time Frame: 12 months after randomization
|
Procedural complications defined as periprocedural myocardial infarction, unplanned re-intervention, stroke, BARC 3-5 bleeding complications or sternal wound infection
|
12 months after randomization
|
Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Study Director: Christian Carranza, MD, E-MBA, Department of Cardiothoracic Surgery, Copenhagen University Hospital, Denmark
Study record dates
Study Major Dates
Study Start (Estimated)
Primary Completion (Estimated)
Study Completion (Estimated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- Hybrid-CABG Trial CPH
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
IPD Plan Description
IPD Sharing Time Frame
IPD Sharing Access Criteria
IPD Sharing Supporting Information Type
- STUDY_PROTOCOL
- SAP
- CSR
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.
Clinical Trials on Coronary Artery Disease
-
Elixir Medical CorporationIstituto Clinico HumanitasActive, not recruitingCoronary Artery Disease | Chronic Total Occlusion of Coronary Artery | Multi Vessel Coronary Artery Disease | Bifurcation of Coronary Artery | Long Lesions Coronary Artery DiseaseItaly
-
Fundación EPICActive, not recruitingCoronary Artery Disease | Left Main Coronary Artery Disease | Left Main Coronary Artery Stenosis | Restenosis, CoronarySpain
-
Peking Union Medical College HospitalNot yet recruitingCoronary Artery Disease | Inflammation | Coronary Artery Disease Progression | Coronary Artery Stenosis | Coronary Artery Restenosis | Inflammatory Disease | Inflammation VascularChina
-
Peking Union Medical College HospitalRecruitingCoronary Artery Disease | Inflammation | Coronary Artery Disease Progression | Coronary Artery Stenosis | Coronary Artery Restenosis | Inflammatory Disease | Inflammation VascularChina
-
IGLESIAS Juan FernandoUniversity of BernNot yet recruiting
-
Barts & The London NHS TrustImperial College London; Brunel UniversityNot yet recruitingCORONARY ARTERY DISEASE
-
National Institutes of Health Clinical Center (CC)National Heart, Lung, and Blood Institute (NHLBI)CompletedCoronary Arteriosclerosis | Coronary Artery Disease (CAD) | Obstructive Coronary Artery DiseaseUnited States
-
Fundación EPICRecruitingCoronary Artery Disease | Coronary Disease | Coronary Occlusion | Left Main Coronary Artery Disease | Coronary Artery StenosisSpain
-
Abbott Medical DevicesCompletedCoronary Artery Disease | Coronary Disease | Coronary Occlusion | Chronic Total Occlusion of Coronary Artery | Coronary Restenosis | Coronary Artery Stenosis | Coronary Artery RestenosisBelgium
-
China National Center for Cardiovascular DiseasesRecruitingLeft Main Coronary Artery DiseaseChina
Clinical Trials on Hybrid coronary revascularization
-
Jessa HospitalRecruitingCoronary Artery DiseaseBelgium
-
Seung-Jung ParkCardioVascular Research Foundation, KoreaRecruitingCoronary Stenosis | Coronary Artery Bypass Grafting | Coronary Artery Disease Progression | Percutaneous Coronary RevascularizationKorea, Republic of
-
Tomsk National Research Medical Center of the Russian...TerminatedCoronary Artery DiseaseRussian Federation
-
Lawson Health Research InstituteLondon Health Sciences CentreCompleted
-
Silesian Centre for Heart DiseasesMinistry of Science and Higher Education, PolandCompletedCoronary Artery Disease | Coronary Disease | Heart Disease | Myocardial IschaemiaPoland
-
Shanghai Jiao Tong University School of MedicineUnknownHeart Failure Due to Coronary Artery DiseaseChina
-
Emilia BagiellaNational Heart, Lung, and Blood Institute (NHLBI)Completed
-
InCor Heart InstituteBoston Scientific CorporationUnknownMultivessel Coronary Artery DiseaseBrazil
-
Shanghai East HospitalRecruitingMultivessel Coronary Artery DiseaseChina