The Scottish Aortic Stenosis LongiTudinal Imaging and biomarkeR (SALTIRE) Programme

This will be an observational cohort study using existing and prospectively recruited cohorts for both cross-sectional and longitudinal comparison across the spectrum of aortic stenosis severity. For existing cohorts of patients who have previously undergone research assessments, we will invite them for repeated assessments.

Participants will be reviewed every 6 months in the Clinical Research Facility (CRF) over a 4-year period. They will undergo clinical assessment, blood sampling, transthoracic echocardiography and advanced imaging annually including CT angiography, magnetic resonance and positron emission tomography (PET).

Inclusion criteria

• 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)
• Patients with moderate aortic stenosis (peak velocity 3.0-4.0 m/s; new prospectively recruited patients)
• Patients with mild aortic stenosis (peak velocity 2.5-2.9 m/s; new prospectively recruited patients)
• Patients with aortic sclerosis (tri-leaflet thickened aortic valve with no obstruction of ventricular outflow)
• Age and sex-matched healthy volunteers

Exclusion criteria

• 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.
• Patients with known Rheumatic Heart Disease
• Patients with known Ochronosis
• Patients with known Familial Homozygous Hypercholesterolaemia