{"version":"1.0","provider_name":"All About Cardiovascular System and Disorders","provider_url":"https:\/\/johnsonfrancis.org\/professional","author_name":"Johnson Francis","author_url":"https:\/\/johnsonfrancis.org\/professional\/author\/jf\/","title":"Assessing Operability in Left-to-Right Shunt Lesions - All About Cardiovascular System and Disorders","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"MeX8f0qYRe\"><a href=\"https:\/\/johnsonfrancis.org\/professional\/assessing-operability-in-left-to-right-shunt-lesions\/\">Assessing Operability in Left-to-Right Shunt Lesions<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/johnsonfrancis.org\/professional\/assessing-operability-in-left-to-right-shunt-lesions\/embed\/#?secret=MeX8f0qYRe\" width=\"600\" height=\"338\" title=\"&#8220;Assessing Operability in Left-to-Right Shunt Lesions&#8221; &#8212; All About Cardiovascular System and Disorders\" data-secret=\"MeX8f0qYRe\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/johnsonfrancis.org\/professional\/wp-includes\/js\/wp-embed.min.js\n<\/script>\n","thumbnail_url":"https:\/\/johnsonfrancis.org\/professional\/wp-content\/uploads\/2026\/06\/Assessing-Operability-in-Left-to-Right-Shunt-Lesions.jpg","thumbnail_width":1205,"thumbnail_height":675,"description":"Assessing the operability of a left-to-right shunt (such as an ASD, VSD, or PDA) fundamentally hinges on quantifying the degree of pulmonary vascular disease (PVD). The core objective is to determine whether the pulmonary vascular resistance (PVR) is dynamically reversible or permanently fixed. Closing a defect in the presence of irreversible pulmonary vascular disease removes [&hellip;]"}