Methods (6) Patients (6) Methods (6) Patients (6) Aortic valve (5) puits (4) substitution (4) Deterioration (4) Treatment (4) Area (4) Area (4) Valves (4) Doppler echocardiography (3) Performance (3) Multivariate analysis (3) Hemodynamics (3) Stenosis (3) Performance (3) étable (2) risque (2) éducation (2) maladie (2) âge (2) comparaison (2) adulte (2) index (2) Education (2) Comparison (2) Echocardiography (2) Surfaces--Areas and volumes (2)