1.0伊人影院 College伊人影院/author/hcirich600338<blockquote class="wp-embedded-content" data-secret="uQNpXWhA3C"><a href="/hci-news/345-about-the-basic-ecg-course">About The Basic-ECG Course</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="/hci-news/345-about-the-basic-ecg-course/embed#?secret=uQNpXWhA3C" width="600" height="338" title="“About The Basic-ECG Course” — 伊人影院 College" data-secret="uQNpXWhA3C" 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.