{"version":"1.0","provider_name":"All About Heart And Blood Vessels","provider_url":"https:\/\/johnsonfrancis.org\/general","author_name":"Johnson Francis","author_url":"https:\/\/johnsonfrancis.org\/general\/author\/jf\/","title":"What is Platypnea-Orthodeoxia Syndrome? - All About Heart And Blood Vessels","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"NoAxpWMiRP\"><a href=\"https:\/\/johnsonfrancis.org\/general\/what-is-platypnea-orthodeoxia-syndrome\/\">What is Platypnea-Orthodeoxia Syndrome?<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/johnsonfrancis.org\/general\/what-is-platypnea-orthodeoxia-syndrome\/embed\/#?secret=NoAxpWMiRP\" width=\"600\" height=\"338\" title=\"&#8220;What is Platypnea-Orthodeoxia Syndrome?&#8221; &#8212; All About Heart And Blood Vessels\" data-secret=\"NoAxpWMiRP\" 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\/general\/wp-includes\/js\/wp-embed.min.js\n<\/script>\n","thumbnail_url":"https:\/\/johnsonfrancis.org\/general\/wp-content\/uploads\/2026\/06\/What-is-Platypnea-Orthodeoxia-Syndrome.jpg","thumbnail_width":1203,"thumbnail_height":675,"description":"Platypnea-orthodeoxia syndrome (POS) is a rare clinical condition characterized by dyspnea (platypnea) and arterial desaturation (orthodeoxia) that occur in the upright position and resolve when the person is supine. For POS to occur, two distinct components must be present simultaneously: Pathophysiology The most common etiology is cardiac, primarily involving a patent foramen ovale (PFO), an [&hellip;]"}