About this trial
The goal of this observational study is to understand the processes of what causes and accelerates the disease progress in aortic stenosis and following aortic valve replacement.
Participants will undergo transthoracic echocardiography every 6 months, with annual visits for state-of-the-art scanning techniques including positron-emission tomography combined with computed tomography or magnetic resonance imaging with radiotracers designed to look at disease processes including fibrosis, calcification, inflammation and thrombosis activity.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
Male or female aged >50 years
Provision of informed consent prior to any study specific procedures
Patients with bioprosthetic aortic valve replacements, including both surgically and transcatheter implanted valves
Patients with severe aortic stenosis (peak velocity >4.0 m/s; previously recruited patients)
Disqualifiers
Inability or unwilling to give informed consent.
Those with an allergy to iodinated contrast
Patients with impaired renal function (eGFR of <30 mL/min/1.73m2)
Women who are pregnant or breastfeeding.
Trial population
We will recruit up to 300 patients with aortic valve disease across the spectrum of disease severities from aortic sclerosis through to mild, moderate and severe aortic stenosis as defined by the European Society of Cardiology. We will also include those who have undergone bioprosthetic aortic valve replacement, and age and sex-matched control subjects with normal aortic valves.
Trial design
Cohort
Prospective
Treatments tested in this trial
PET-CT
RadiationPET combined with CT or MRI
Treatment groups
Trial outcomes
Primary outcomes
Haemodynamic aortic valve disease progression.
Rate of change of maximal aortic valve jet velocity (AV Vmax)
Secondary outcomes
Inflammatory, thrombotic, fibrotic and calcific aortic valve disease progression.
Rate of change of tissue-to-background ratio (TBRmax) of FDG, GP1, FAPI and NaF PET.
Sponsors and contacts
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