title: Dynamic left-ventricular tract outflow obstruction: a late complication of mitral valve replacement.
abstract: The case presented is a 47-year-old woman with left-ventricular outflow tract obstruction which was the late complication of mitral valve replacement (4 years later). The diagnosis was made using two-dimensional Doppler echocardiography (echo-2D Doppler) and confirmed by cardiac catheterization. Protrusion of the prosthetic ring towards the intraventricular septum reducing the diameter of the outflow tract to 7-8 mm and creating a dynamic obstruction (30 mm Hg on cardiac catheterization, and 44 and 75 mm Hg on echo-2D Doppler basally and after isoamyl nitrite inhalation, respectively) was recorded. The echo-2D Doppler technique appears to be useful in detecting this postsurgical mitral complication.
authors.affiliation: Cattedra di Cardiologia, Università degli Studi di Parma, Italia.
authors.forename: R
authors.initials: R
authors.lastname: Bolognesi
authors.forename: D
authors.initials: D
authors.lastname: Tsialtas
authors.forename: C
authors.initials: C
authors.lastname: Manca
mesh_terms: D015150:Echocardiography, Doppler; D005260:Female; D006350:Heart Valve Prosthesis; D006801:Humans; D008875:Middle Aged; D008943:Mitral Valve / Q000601:surgery*; D011183:Postoperative Complications; D013997:Time Factors; D014694:Ventricular Outflow Obstruction / Q000175:diagnosis / Q000209:etiology*