1.0All About Cardiovascular System and Disordershttps://johnsonfrancis.org/professionalJohnson Francishttps://johnsonfrancis.org/professional/author/jf/rich600338<blockquote class="wp-embedded-content" data-secret="DNXtLdBiSj"><a href="https://johnsonfrancis.org/professional/ecg-simplified-full-series/">ECG Simplified Full Series</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://johnsonfrancis.org/professional/ecg-simplified-full-series/embed/#?secret=DNXtLdBiSj" width="600" height="338" title="“ECG Simplified Full Series” — All About Cardiovascular System and Disorders" data-secret="DNXtLdBiSj" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !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); //# sourceURL=https://johnsonfrancis.org/professional/wp-includes/js/wp-embed.min.js </script> https://johnsonfrancis.org/professional/wp-content/uploads/2022/05/ECG-Simplified-Full-Series.jpg1200894ECG Simplified Full Series ECG stands for electrocardiogram, the recording of the electrical activity of the heart from the body surface. Direct recording of the electrical activity of the heart from within its various chambers are called electrograms. ECG is inexpensive widely available, and equipment needed for recording is quite portable. ECG is a very […]