1.0Best Heart Surgery Hospitalshttps://www.bestheartsurgery.com/blogdrheartcarehttps://www.bestheartsurgery.com/blog/author/drheartcare/rich600338<blockquote class="wp-embedded-content" data-secret="RmvRS7Qtqu"><a href="https://www.bestheartsurgery.com/blog/lidocaine-definition-clinical-significance-and-overview/">Lidocaine: Definition, Clinical Significance, and Overview</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.bestheartsurgery.com/blog/lidocaine-definition-clinical-significance-and-overview/embed/#?secret=RmvRS7Qtqu" width="600" height="338" title="“Lidocaine: Definition, Clinical Significance, and Overview” — Best Heart Surgery Hospitals" data-secret="RmvRS7Qtqu" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript"> /* <![CDATA[ */ /*! 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://www.bestheartsurgery.com/blog/wp-includes/js/wp-embed.min.js /* ]]> */ </script> Lidocaine is a medication that blocks sodium channels in nerves and cardiac cells. It is used as a local anesthetic and as an antiarrhythmic drug in selected settings. In cardiology, it is most associated with treatment of certain ventricular arrhythmias and with procedural anesthesia. It is commonly encountered in emergency care, electrophysiology contexts, and bedside procedures.