<?xml version="1.0"?>
<oembed><version>1.0</version><provider_name>Best Heart Surgery Hospitals</provider_name><provider_url>https://www.bestheartsurgery.com/blog</provider_url><author_name>drheartcare</author_name><author_url>https://www.bestheartsurgery.com/blog/author/drheartcare/</author_url><title>Preload: Definition, Clinical Significance, and Overview - Best Heart Surgery Hospitals</title><type>rich</type><width>600</width><height>338</height><html>&lt;blockquote class="wp-embedded-content" data-secret="GXYkC11b42"&gt;&lt;a href="https://www.bestheartsurgery.com/blog/preload-definition-clinical-significance-and-overview/"&gt;Preload: Definition, Clinical Significance, and Overview&lt;/a&gt;&lt;/blockquote&gt;&lt;iframe sandbox="allow-scripts" security="restricted" src="https://www.bestheartsurgery.com/blog/preload-definition-clinical-significance-and-overview/embed/#?secret=GXYkC11b42" width="600" height="338" title="&#x201C;Preload: Definition, Clinical Significance, and Overview&#x201D; &#x2014; Best Heart Surgery Hospitals" data-secret="GXYkC11b42" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"&gt;&lt;/iframe&gt;&lt;script type="text/javascript"&gt;
/* &lt;![CDATA[ */
/*! This file is auto-generated */
!function(d,l){"use strict";l.querySelector&amp;&amp;d.addEventListener&amp;&amp;"undefined"!=typeof URL&amp;&amp;(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&amp;&amp;!/[^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&lt;o.length;i++)o[i].style.display="none";for(i=0;i&lt;a.length;i++)s=a[i],e.source===s.contentWindow&amp;&amp;(s.removeAttribute("style"),"height"===t.message?(1e3&lt;(r=parseInt(t.value,10))?r=1e3:~~r&lt;200&amp;&amp;(r=200),s.height=r):"link"===t.message&amp;&amp;(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&amp;&amp;n.host===r.host&amp;&amp;l.activeElement===s&amp;&amp;(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&lt;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);
//# sourceURL=https://www.bestheartsurgery.com/blog/wp-includes/js/wp-embed.min.js
/* ]]&gt; */
&lt;/script&gt;
</html><description>Preload is the stretch of cardiac muscle at the end of filling, just before contraction. It is a physiology concept most closely related to ventricular end-diastolic volume and pressure. Preload is commonly discussed in heart failure, shock, and perioperative and critical care cardiology. Clinicians use it to interpret hemodynamics and to predict how stroke volume may change with volume shifts.</description></oembed>
