title: [Doppler echocardiography of heart valve defects in the dog].
abstract: In the diagnosis of heart diseases the Doppler echocardiography makes it possible to distinguish physiological and pathological blood flow and thus to prove and judge valve defects in a noninvasive way. The color Doppler gives a survey about place and direction of the streams. The exact analysis and quantification of the stream speed results from the spectral Doppler. Valve stenosis is characterized by a flow acceleration on the level of the stenosis. The increased speed is used for estimation of the severity of the stenosis. Valve insufficiency is recognized by a reflux of blood to the ventricle or atrium, respectively. The extent of the insufficiency can be evaluated semiquantitatively.
authors.affiliation: Medizinischen und Gerichtlichen VeterinärklinikI, Justus-Liebig-Universität Giessen.
authors.forename: M
authors.initials: M
authors.lastname: Schneider
authors.forename: H
authors.initials: H
authors.lastname: Neu
mesh_terms: D000818:Animals; D004283:Dog Diseases / Q000000981:diagnostic imaging*; D004285:Dogs; D015150:Echocardiography, Doppler / Q000662:veterinary*; D006349:Heart Valve Diseases / Q000000981:diagnostic imaging / Q000662:veterinary*
vernacular_title: Doppler-echokardiographische Darstellung von Herzklappenvitien beim Hund.