{"id":24359,"date":"2018-05-24T15:29:10","date_gmt":"2018-05-24T09:59:10","guid":{"rendered":"https:\/\/cardiophile.org\/?p=24359"},"modified":"2018-05-24T15:29:10","modified_gmt":"2018-05-24T09:59:10","slug":"patient-prosthesis-mismatch","status":"publish","type":"post","link":"https:\/\/johnsonfrancis.org\/professional\/patient-prosthesis-mismatch\/","title":{"rendered":"Patient &#8211; prosthesis mismatch"},"content":{"rendered":"<h2><span style=\"color: #008000;\">Patient &#8211; prosthesis mismatch<\/span><\/h2>\n<p><iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/datOPULFcrQ\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\"><\/iframe><br \/>\nPatient &#8211; prosthesis mismatch is often noted in aortic position, that too after surgery for aortic stenosis. In aortic stenosis the aortic root is not dilated and the left ventricle is hypertrophied. Hence often a lower size of prosthetic valve has to be chosen, which can lead to mismatch. In aortic regurgitation, a dilated aortic root often allows a good sized prosthesis to be chosen.<\/p>\n<p><span style=\"color: #0000ff;\">To put it simply, a prosthetic valve too small for the patient&#8217;s body surface area produces this situation.<\/span> It produces an increase in transvalvar gradient, but imaging studies like echocardiogram, fluoroscopy or computed tomography will show absences of thrombotic masses and normal valve opening angles. Measurement of the orifice area and calculating the indexed area with respect to body surface area will differentiate it from other causes of prosthetic valve dysfunction which can also increase the gradient. Absence of <a href=\"https:\/\/johnsonfrancis.org\/professional\/pannus-formation-in-prosthetic-valves-2\/\">pannus<\/a> or thrombus reducing the orifice area should also be documented by imaging studies.<\/p>\n<p>In patients with small aortic annulus, surgeons sometimes resort to aortic root widening procedures to accommodate larger sized prosthetic valves to avoid mismatch. But these procedures require extra skill and increases the surgical time and hence the possible periprocedural morbidity.<\/p>\n<p>Stentless bioprosthesis are less likely to have patient prosthesis mismatch. They have better valve orifices and lesser transvalvar gradients compared to stented bioprosthesis.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Patient &#8211; prosthesis mismatch Patient &#8211; prosthesis mismatch is often noted in aortic position, that too after surgery for aortic stenosis. In aortic stenosis the aortic root is not dilated and the left ventricle is hypertrophied. Hence often a lower size of prosthetic valve has to be chosen, which can lead to mismatch. In aortic [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":36294,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","footnotes":""},"categories":[22],"tags":[],"class_list":["post-24359","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cardiac-surgery"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Patient - prosthesis mismatch - after some cases of AVR for AS<\/title>\n<meta name=\"description\" content=\"Patient - prosthesis mismatch: A prosthetic valve too small for the patient&#039;s body surface area, produces an increase in transvalvar gradient.\" \/>\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\/patient-prosthesis-mismatch\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Patient - prosthesis mismatch - after some cases of AVR for AS\" \/>\n<meta property=\"og:description\" content=\"Patient - prosthesis mismatch: A prosthetic valve too small for the patient&#039;s body surface area, produces an increase in transvalvar gradient.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/johnsonfrancis.org\/professional\/patient-prosthesis-mismatch\/\" \/>\n<meta property=\"og:site_name\" content=\"All About Cardiovascular System and Disorders\" \/>\n<meta property=\"article:published_time\" content=\"2018-05-24T09:59:10+00:00\" \/>\n<meta name=\"author\" content=\"Johnson Francis\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Johnson Francis\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/patient-prosthesis-mismatch\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/patient-prosthesis-mismatch\\\/\"},\"author\":{\"name\":\"Johnson Francis\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/#\\\/schema\\\/person\\\/5441d907049b914770f4bd98fb57feec\"},\"headline\":\"Patient &#8211; 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