{"version":"1.0","provider_name":"Best Spine Hospitals","provider_url":"https:\/\/www.bestspinehospitals.com\/blog","author_name":"drspine","author_url":"https:\/\/www.bestspinehospitals.com\/blog\/author\/drspine\/","title":"SA Node: Definition, Uses, and Clinical Overview - Best Spine Hospitals","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"C1CnFAbLUC\"><a href=\"https:\/\/www.bestspinehospitals.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.bestspinehospitals.com\/blog\/sa-node-definition-uses-and-clinical-overview\/embed\/#?secret=C1CnFAbLUC\" width=\"600\" height=\"338\" title=\"&#8220;SA Node: Definition, Uses, and Clinical Overview&#8221; &#8212; Best Spine Hospitals\" data-secret=\"C1CnFAbLUC\" 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.bestspinehospitals.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 upper right chamber of the heart (the right atrium) near where a major vein enters. It acts like the heart\u2019s natural \u201cpacemaker\u201d by generating electrical signals. Clinicians commonly reference it when interpreting an ECG, evaluating palpitations, or assessing slow or fast heart rhythms."}