About this trial
Prospective, multicenter, randomized trial.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Procedural indications: symptomatic severe aortic regurgitation; no symptom plus left ventricular ejection fraction ≤ 55% or left ventricular end-diastolic dimension (LVEDD) > 65mm or left ventricular end-systolic dimension (LVESD) > 50mm;
Severe aortic valve regurgitation, and mean pressure gradient < 20mmHg; Annular perimeter ≤ 85 mm;
The ratio of the perimeter of the left ventricular outflow tract 4mm to the perimeter of the valve annulus is 0.95-1.05;
Severe aorta calcification or active ascending aorta atherosclerotic plaque
Disqualifiers
Age < 60 years old;
Ascending aorta diameter >45mm;
Coronary multi-vessel disease (SYNTAX score >32);
Life expectancy <1 year;
Trial design
Parallel
Treatments tested in this trial
Transcatheter Aortic Valve Implantation
DeviceThe VitaFlow™ system (MicroPort®, Shanghai, China) was a novel TAVR system, which incorporates high-radial force and a double layer polyethylene terephthalate (PET) skirt to optimize frame geometry and minimize the risks of paravalvular leak (PVL). The VitaFlow™ transcatheter aortic valve is made of a self-expanding nitinol frame and tri-leaflet bovine pericardial valve.
Medical therapy
DrugAngiotensin-neprilysin inhibition (ARNI), diuretics, dihydropyridine calcium channel blocker, angiotensin-converting enzyme (ACE) inhibitors/angiotensin receptor blockers (ARBs) or beta blockers.
Treatment groups
Trial outcomes
Primary outcomes
Clinical worsening
A composite of all cause death, disabling stroke, or heart failure rehospitalization
Secondary outcomes
Procedural complications
Any aortic dissection, annular rupture, coronary artery occlusion, vascular complications, permanent pacemaker implantation.
6-minute walk distance
This test measures the distance that a patient can quickly walk on a flat, hard surface in a period of 6 minutes.
New York Heart Association (NYHA) functional class
Classification of function capacity of the NYHA.
Stroke
Stroke is defined as an acute episode of focal or global neurological dysfunction caused by the brain, spinal cord, or retinal vascular injury as a result of hemorrhage or infarction.
Sponsors and contacts
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