1.0六六社 College六六社/author/hcirich600338<blockquote class="wp-embedded-content" data-secret="WwBz7QUu5y"><a href="/hci-news/345-about-the-basic-ecg-course">六六社 The Basic-ECG Course</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="/hci-news/345-about-the-basic-ecg-course/embed#?secret=WwBz7QUu5y" width="600" height="338" title="“六六社 The Basic-ECG Course” — 六六社 College" data-secret="WwBz7QUu5y" 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); </script> /wp-content/uploads/2015/04/basic-ecg.jpg448332An electrocardiogram (ECG) is a picture of the electrical conduction of the heart gives information about a variety of different medical conditions. The primary purpose of the cardiovascular system is to supply an adequate amount of blood to peripheral tissues to meet their metabolic demands at all times.