{"id":60104,"date":"2017-11-15T17:57:02","date_gmt":"2017-11-15T15:57:02","guid":{"rendered":"https:\/\/wpcalc.com\/?p=60104"},"modified":"2025-05-20T10:37:57","modified_gmt":"2025-05-20T07:37:57","slug":"aortic-valve-area","status":"publish","type":"post","link":"https:\/\/wpcalc.com\/en\/medical\/aortic-valve-area\/","title":{"rendered":"Aortic Valve Area Calculator"},"content":{"rendered":"<section class=\"not-prose calculator-box\" aria-labelledby=\"calculator-title\"><div class=\"flex items-baseline sm:items-center justify-between gap-2 sm:gap-3\"><div class=\"flex flex-col sm:flex-row sm:items-center gap-2\"><span class=\"icon icon-calculator text-primary-700! text-base! dark:text-primary-300!\" aria-hidden=\"true\"><\/span><h2 class=\"text-lg font-display font-bold\">Aortic Valve Area<\/h2><\/div><div class=\"relative group inline-block\">\n  <button class=\"favorite\" id=\"favorite\" data-favorite-id=\"60104\" data-favorite-title=\"Aortic Valve Area\" data-favorite-url=\"https:\/\/wpcalc.com\/en\/medical\/aortic-valve-area\/\" data-favorite-excerpt=\"This calculator helps healthcare professionals and caregivers determine how many solid medication tablets to administer based on the prescribed dose and the available dosage strength. It\u2019s especially useful in clinical and pharmacy settings where accurate medication dosing is crucial for patient safety.\" aria-label=\"Add to Favorites\" data-favorite-icon=\"icon icon-heartbeat\">\n    <span class=\"icon icon-shape-star-empty\"><\/span>\n  <\/button>\n  <div class=\"absolute right-full -translate-y-1\/2 top-1\/2 mr-2 w-max max-w-xs px-3 py-2 bg-gray-800 text-white text-xs rounded shadow-lg opacity-0 group-hover:opacity-100 transition-opacity duration-200 z-10 pointer-events-none\">\n   <span class=\"favorite-tooltip\" id=\"favorite-tooltip\"><\/span>\n  <\/div>\n<\/div><\/div><form action=\"https:\/\/wpcalc.com\/en\/medical\/aortic-valve-area\/\" method=\"POST\" class=\"calculator\" id=\"calculator-60104\" data-post=\"60104\"><fieldset class=\"fieldset-input is-1\"><legend class=\"sr-only\">Input Fields<\/legend><div class=\"field has-term\" id=\"input-1\"><label for=\"field-1\">LVOT Diameter<\/label><div class=\"term\">D<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"number\" name=\"lvot_diameter\" id=\"field-1\" placeholder=\"Diameter\" step=\"any\" value=\"2\"\/><div class=\"unit\">cm<\/div><\/div><div class=\"field has-term\" id=\"input-2\"><label for=\"field-2\">LVOT (VTI)<\/label><div class=\"term\">LVOT<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"number\" name=\"lvot_vti\" id=\"field-2\" placeholder=\"LVOT VTI\" step=\"any\" value=\"20\"\/><div class=\"unit\">cm<\/div><\/div><div class=\"field has-term\" id=\"input-3\"><label for=\"field-3\">Aortic Valve VTI<\/label><div class=\"term\">AV<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"number\" name=\"aortic_valve_vti\" id=\"field-3\" placeholder=\"Aortic VTI\" step=\"any\" value=\"40\"\/><div class=\"unit\">cm<\/div><\/div><\/fieldset><div class=\"buttons\"><button type=\"submit\" data-text=\"Re-Calculate\" id=\"calculate-button\" data-post=\"60104\">Calculate<\/button><button type=\"reset\">Reset<\/button><\/div><div class=\"field is-checkbox hidden!\" id=\"field-auto-calc\"><input type=\"checkbox\" id=\"auto-calc\"><label for=\"auto-calc\">Calculate automatically<\/label><small>If enabled, the result will update automatically when you change any value.<\/small><\/div><div class=\"fieldset-result is-hidden\" aria-labelledby=\"result-title\" aria-live=\"polite\" role=\"region\"> <h3 class=\"result-title bg-gradient-to-r from-primary-50 to-gray-50 dark:from-primary-900 dark:to-gray-800\" id=\"result-title\"><span class=\"icon icon-s-pulse\" aria-hidden=\"true\"><\/span> Your Results<\/h3><div class=\"result-box\"><div class=\"field-result\" id=\"output-1\"><span class=\"field-title\"><span>CSA<\/span><\/span><span class=\"field-value\" id=\"result-1\" data-unit=\"cm\u00b2\"><\/span><button class=\"copy-result\" data-tooltip=\"Copy Result\"><span class=\"copy-icon icon icon-document-copy\"><\/span><\/button><\/div><div class=\"field-result\" id=\"output-2\"><span class=\"field-title\"><span>SV<\/span><\/span><span class=\"field-value\" id=\"result-2\" data-unit=\"cm\u00b3\"><\/span><button class=\"copy-result\" data-tooltip=\"Copy Result\"><span class=\"copy-icon icon icon-document-copy\"><\/span><\/button><\/div><div class=\"field-result\" id=\"output-3\"><span class=\"field-title\"><span>Aortic Valve Area<\/span><\/span><span class=\"field-value\" id=\"result-3\" data-unit=\"cm\u00b2\"><\/span><button class=\"copy-result\" data-tooltip=\"Copy Result\"><span class=\"copy-icon icon icon-document-copy\"><\/span><\/button><\/div><\/div><\/div><a href=\"#respond\" class=\"hidden transition-opacity duration-300 opacity-0 w-50 text-sm justify-center items-center gap-2 px-4 py-2 rounded bg-gray-200 text-gray-700 hover:bg-gray-300\" id=\"leave-comment\"><span class=\"icon icon-comments\" aria-hidden=\"true\"><\/span>Leave a Comment<\/a><\/form><\/section><section id=\"calc-reactions\" class=\"not-prose hidden my-12 bg-gradient-to-r from-primary-50 to-gray-50 border border-indigo-100 rounded-xl px-6 py-4 shadow-sm\" data-post=\"60104\" aria-live=\"polite\"><h2 class=\"text-sm text-gray-500 text-center mb-2\">How did this result make you feel?<\/h2><div class=\"grid grid-cols-3 sm:flex sm:flex-row sm:justify-around gap-4 sm:items-center sm:flex-wrap\"><button class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"like\"><span class=\"reaction-count\" data-reaction-count=\"like\">0<\/span><span class=\"reaction text-3xl\">\ud83d\ude00 <\/span><span class=\"reaction-description font-medium\">Like <\/span><\/button><button class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"helpful\"><span class=\"reaction-count\" data-reaction-count=\"helpful\">0<\/span><span class=\"reaction text-3xl\">\ud83d\udca1 <\/span><span class=\"reaction-description font-medium\">Helpful <\/span><\/button><button class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"confused\"><span class=\"reaction-count\" data-reaction-count=\"confused\">0<\/span><span class=\"reaction text-3xl\">\ud83d\ude15 <\/span><span class=\"reaction-description font-medium\">Confused <\/span><\/button><button class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"disappointed\"><span class=\"reaction-count\" data-reaction-count=\"disappointed\">0<\/span><span class=\"reaction text-3xl\">\ud83d\ude1e <\/span><span class=\"reaction-description font-medium\">Disappointed <\/span><\/button><button class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"inaccurate\"><span class=\"reaction-count\" data-reaction-count=\"inaccurate\">0<\/span><span class=\"reaction text-3xl\">\u274c <\/span><span class=\"reaction-description font-medium\">Inaccurate <\/span><\/button><\/div><div id=\"reaction-message\" class=\"hidden mt-8 rounded-md border border-primary-100 bg-white\/50 backdrop-blur-sm px-4 py-2 text-sm text-center shadow-sm\"><\/div><\/section><ins class=\"adsbygoogle\"\n     style=\"display:block; text-align:center; margin: 32px 0;\"\n     data-ad-layout=\"in-article\"\n     data-ad-format=\"fluid\"\n     data-ad-client=\"ca-pub-1721569815777345\"\n     data-ad-slot=\"6317458308\"><\/ins>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script>\n<section class=\"formula-box\" aria-labelledby=\"formula-title\">\r\n\t<div id=\"formula-title\" class=\"not-prose font-display mb-4\"><span class=\"icon icon-formula\" aria-hidden=\"true\"><\/span><h2>Aortic Valve Area Formula (Continuity Equation)<\/h2><\/div>\r\n\t<figure class=\"not-prose formula\">\r\n\t\t<figcaption class=\"formula-title\">Formula<\/figcaption>\r\n\t\t<div class=\"text-base text-gray-800\" id=\"formula\">$$\\text{Aortic Valve Area} = \\frac{(LVOT\\ Diameter)^2 \\times 0.78540 \\times LVOT\\ VTI}{Aortic\\ Valve\\ VTI}$$<\/div>\r\n\t<\/figure>\r\n\t<\/p>\n<p><strong>CSA (LVOT cross-sectional area):<\/strong> $$CSA = 0.785 \\times (LVOT\\ Diameter)^2$$<\/p>\n<p><strong>Stroke Volume (SV):<\/strong> $$SV = 0.785 \\times (LVOT\\ Diameter)^2 \\times LVOT\\ VTI$$<\/p>\n<p><strong>Where<\/strong>: <\/p>\n<ul>\n<li>LVOT Diameter in cm<\/li>\n<li>VTI values in cm<\/li>\n<li>AVA result is in cm\u00b2<\/li>\n<\/ul>\n<p>\r\n<\/section>\n<p>The <strong>Aortic Valve Area Calculator<\/strong> is primarily used in echocardiography to assess the severity of <strong>aortic stenosis<\/strong>. It applies the <strong>continuity equation<\/strong>, assuming flow through the LVOT equals flow through the aortic valve. Inputs include the LVOT diameter, LVOT VTI, and aortic valve VTI. The calculator first determines the LVOT cross-sectional area (CSA), then computes the stroke volume (SV), and finally derives the AVA by dividing SV by the aortic valve VTI. This tool assists in quantifying stenosis severity for appropriate treatment planning.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>This calculator helps healthcare professionals and caregivers determine how many solid medication tablets to administer based on the prescribed dose and the available dosage strength. It\u2019s especially useful in clinical and pharmacy settings where accurate medication dosing is crucial for patient safety.<\/p>\n","protected":false},"author":70,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[8],"tags":[15],"class_list":["post-60104","post","type-post","status-publish","format-standard","hentry","category-medical","tag-cardiology"],"acf":[],"_links":{"self":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/60104","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/users\/70"}],"replies":[{"embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/comments?post=60104"}],"version-history":[{"count":2,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/60104\/revisions"}],"predecessor-version":[{"id":64662,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/posts\/60104\/revisions\/64662"}],"wp:attachment":[{"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/media?parent=60104"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/categories?post=60104"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wpcalc.com\/en\/wp-json\/wp\/v2\/tags?post=60104"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}