title: [Study of valvular prostheses by Doppler echography].
abstract: Doppler echocardiography is a reliable non-invasive method of following up patients with prosthetic heart valves. Transthoracic M mode and two-dimensional echo allow evaluation of the movement of the mobile element of the prosthesis and of the size of the cardiac chambers. Doppler studies (transprosthetic pressure gradient, valve surface area, trans- and periprosthetic regurgitation) give an indication of the hemodynamic profile of the prosthesis. Transesophageal echocardiography is especially useful when there are abnormalities suggestive of prosthetic valve dysfunction (fever, systemic embolism, clinical symptoms, haemolysis...).
authors.affiliation: Clinique cardiologique, hôpital Broussais, Paris.
authors.forename: H
authors.initials: H
authors.lastname: Raffoul
authors.forename: E
authors.initials: E
authors.lastname: Abergel
authors.forename: A
authors.initials: A
authors.lastname: Cohen
authors.forename: X
authors.initials: X
authors.lastname: Jeanrenaud
authors.forename: L
authors.initials: L
authors.lastname: Vaur
authors.forename: C
authors.initials: C
authors.lastname: Habert
authors.forename: B
authors.initials: B
authors.lastname: Diebold
mesh_terms: D001021:Aortic Valve; D015150:Echocardiography, Doppler; D006350:Heart Valve Prosthesis / Q000009:adverse effects; D006801:Humans; D008943:Mitral Valve; D011184:Postoperative Period
vernacular_title: Etude des prothèses valvulaires en écho-Doppler.