Aortic Stenosis in Elderly : Determinant of Progression
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ClinicalTrials.gov Identifier: NCT00338676
Recruitment Status : Unknown
Verified February 2016 by Assistance Publique - Hôpitaux de Paris. Recruitment status was: Active, not recruiting
Aortic stenosis (AS) is AS is caused by calcium deposits in the aortic valve. Calcification is progressive and eventually leads to reduced leaflet motion with obstruction of the left ventricular outflow. The only treatment is surgery. There are evidences that AS is a regulated process with similarities to atherosclerosis but determinants of AS progression are unknown. The study aims at evaluating these determinants and more specifically the role of lipids, inflammation and platelet aggregation.
Condition or disease
Aortic StenosisElderly Gravida
Aortic stenosis (AS) is the most common valvular disease and the second most common indication for cardiac surgery in Western countries. AS prevalence increases with age and with aging of the population, AS is a major public health problem. AS is due to calcium deposits within the aortic valve. Calcium deposit is progressive and eventually leads to reduced leaflet motion with obstruction of the left ventricular outflow. There is currently no effective medical therapy. Once the stenosis is severe and patients symptomatic, outcome is poor unless surgery (aortic valve replacement) is promptly performed. AS has long been considered as a passive and degenerative process. Recent data challenged this concept, showing that AS is an active and highly regulated process with some similarities to atherosclerosis. However, AS progression is highly variable from one individual to another and determinants of AS progression are poorly known. Their identification is crucial if we want to develop new medical strategies. The aims of the present study are to identify the determinants of AS progression and more specifically to evaluate the role of lipids, inflammation and platelet aggregation.
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Layout table for eligibility information
Ages Eligible for Study:
70 Years and older (Older Adult)
Sexes Eligible for Study:
Accepts Healthy Volunteers:
Patients diagnosed with an at least mild aortic stenosis with no indication for surgery
Age ≥ 70 years
AS with mean transmitral gradient > 10 mm Hg and aortic valve area < 2 cm2
No surgical indication
Rheumatic or congenital AS
Associated valvular disease grade ≥ 2/4
Indication for surgery (severe AS (aortic valve area < 1 cm2 or < 0.6 cm2/m2 of body surface area and symptoms or congestive heart failure or left ventricular ejection fraction < 50%)
Renal insufficiency (creatinine clearance < 30 ml /min)