{"version":"1.0","provider_name":"Best Cardiac Hospitals","provider_url":"https:\/\/www.bestcardiachospitals.com\/blog","author_name":"drcardiac","author_url":"https:\/\/www.bestcardiachospitals.com\/blog\/author\/drcardiac\/","title":"SA Node: Definition, Uses, and Clinical Overview - Best Cardiac Hospitals","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"fB9snmGpK0\"><a href=\"https:\/\/www.bestcardiachospitals.com\/blog\/sa-node-definition-uses-and-clinical-overview\/\">SA Node: Definition, Uses, and Clinical Overview<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.bestcardiachospitals.com\/blog\/sa-node-definition-uses-and-clinical-overview\/embed\/#?secret=fB9snmGpK0\" width=\"600\" height=\"338\" title=\"&#8220;SA Node: Definition, Uses, and Clinical Overview&#8221; &#8212; Best Cardiac Hospitals\" data-secret=\"fB9snmGpK0\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script type=\"text\/javascript\">\n\/* <![CDATA[ *\/\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:\/\/www.bestcardiachospitals.com\/blog\/wp-includes\/js\/wp-embed.min.js\n\/* ]]> *\/\n<\/script>\n","description":"The SA Node is a small cluster of specialized heart cells that normally starts each heartbeat. It sits in the right atrium, near where a large vein (the superior vena cava) enters the heart. It is commonly discussed when clinicians interpret an electrocardiogram (ECG) or evaluate heart rhythm symptoms. It is often called the heart\u2019s \u201cnatural pacemaker,\u201d meaning it sets the typical resting heart rate."}