{"id":3165,"date":"2012-06-15T04:39:30","date_gmt":"2012-06-15T04:39:30","guid":{"rendered":"http:\/\/cardiophile.org\/?p=3165"},"modified":"2012-06-15T04:39:30","modified_gmt":"2012-06-15T04:39:30","slug":"echocardiographic-profile-of-prosthetic-mitral-valve","status":"publish","type":"post","link":"https:\/\/johnsonfrancis.org\/professional\/echocardiographic-profile-of-prosthetic-mitral-valve\/","title":{"rendered":"Prosthetic mitral valve echocardiogram"},"content":{"rendered":"<h2><span style=\"color: #008000;\">Prosthetic mitral valve echocardiogram<\/span><\/h2>\n<p><iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/e3y50XUEw1U\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\"><\/iframe><br \/>\nEvaluation of prosthetic valves is one of the difficult tasks in echocardiography because of the dense shadows caused by prosthetic valves. It may be virtually impossible to detect small lesions like a vegetation on the far side of the prosthetic valve. At the same time, a prosthetic valve endocarditis has a much more dismal prognosis than a native valve endocarditis. Moreover, even normally functioning prosthetic valves may have a gradient across which would be considered abnormal for a native valve.<\/p>\n<p style=\"text-align: center;\"><em><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-35155\" src=\"https:\/\/johnsonfrancis.org\/professional\/wp-content\/uploads\/2012\/06\/Prosthetic-mitral-valve-echocardiogram-systolic-frame-1.jpg\" alt=\"Prosthetic mitral valve echocardiogram\" width=\"1200\" height=\"970\">Prosthetic mitral valve &#8211; systolic frame<\/em><\/p>\n<p>Echocardiogram of <a href=\"https:\/\/johnsonfrancis.org\/professional\/starr-edwards-mitral-prosthetic-valve-on-cxr\/\">prosthetic mitral valve<\/a> in parasternal long axis view showing the valve in the closed position and the aortic valve in the open position. The metallic component of the prosthetic valve produces dense echoes. The left atrium is dilated, possibly a sequelae of the old lesion for which the mitral valve was replaced. The aorta is relatively small, and left ventricle is of normal size, indicating that the lesion could have been mitral stenosis. When a prosthetic valve is placed in a case of isolated mitral stenosis, especially one of the caged ball variety with a high profile, the cage will jut into the left ventricular outflow tract and may increase the LV outflow gradient. LV: left ventricle; LA: left atrium; Ao: aorta; Prosth MV: prosthetic mitral valve.<\/p>\n<p style=\"text-align: center;\"><em><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-35157 size-full\" src=\"https:\/\/johnsonfrancis.org\/professional\/wp-content\/uploads\/2012\/06\/Prosthetic-mitral-valve-echocardiogram-with-valve-in-open-position-1.jpg\" alt=\"Prosthetic mitral valve with valve in open position\" width=\"1200\" height=\"932\">Prosthetic mitral valve &#8211; with valve in open position<\/em><\/p>\n<p>This picture shows the prosthetic mitral valve in the open position. See the dense acoustic shadowing behind the valve, which obviously can obscure small vegetations in that region. Getting a transesophageal echo is a way to look at the far side of the prosthetic valve when an endocarditis is suspected clinically. In transesophageal echocardiography, since the transducer is behind the left atrium the atrial aspect of the prosthetic valve can be imaged without interference by acoustic shadowing.<\/p>\n<p style=\"text-align: center;\"><em><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-35160 size-full\" src=\"https:\/\/johnsonfrancis.org\/professional\/wp-content\/uploads\/2012\/06\/Prosthetic-mitral-valve-echocardiogram-in-apical-four-chamber-view-1.jpg\" alt=\"Prosthetic mitral valve in apical four chamber view\" width=\"1200\" height=\"1050\">Prosthetic mitral valve in apical four chamber view<\/em><\/p>\n<p>Apical four chamber view is also useful in the evaluation of the prosthetic mitral valve. Acoustic shadowing is a problem in this view also. RA: right atrium; RV: right ventricle<br \/>\nAn M-mode cut of the prosthetic mitral valve is useful in documenting the poppet excursion. Poppet excursion is diminished in case of thrombus or pannus formation. Thrombus formation usually presents with acute mitral valve obstruction while pannus formation presents more insidiously with increasing gradients and effort intolerance.<\/p>\n<p style=\"text-align: center;\"><em><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-35162 size-full\" src=\"https:\/\/johnsonfrancis.org\/professional\/wp-content\/uploads\/2012\/06\/Prosthetic-mitral-valve-echocardiogram-in-apical-four-chamber-view-with-colour-flow-mapping-1.jpg\" alt=\"Prosthetic mitral valve in apical four chamber view with colour flow mapping\" width=\"1200\" height=\"755\">Prosthetic mitral valve in apical four chamber view with colour flow mapping<\/em><\/p>\n<p>Colour flow mapping (color Doppler) from the apical four chamber view shows normal antegrade flow and a trivial backflow, which is normal during the closing movement of the prosthetic valve. This view is useful to look for para valvar and trans valvar leaks. Early onset of paravalvar leak may indicate the give way of a surgical suture. Doppler interrogation from this view is useful in quantifying the transvalvar gradients. It is always good to document the gradients serially to identify rise in gradients due to pannus formation. Acute obstruction usually presents with pulmonary edema due to grossly elevated pulmonary venous pressures and calls for urgent intervention.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Evaluation of prosthetic valves is one of the difficult tasks in echocardiography because of the dense shadows caused by prosthetic valves.<\/p>\n","protected":false},"author":1,"featured_media":35160,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","footnotes":""},"categories":[25,8],"tags":[],"class_list":["post-3165","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-echocardiogram-library-echocardiogram-library","category-echocardiogram-library"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Prosthetic mitral valve echocardiogram - All About Cardiovascular System and Disorders<\/title>\n<meta name=\"description\" content=\"Prosthetic mitral valve echocardiogram: Two dimensional and colour Doppler echocardiogram of prosthetic mitral valve in multiple views.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/johnsonfrancis.org\/professional\/echocardiographic-profile-of-prosthetic-mitral-valve\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Prosthetic mitral valve echocardiogram - 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