[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-364408-105":59,"doc-detail-364408-en":131},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":124,"head_meta":126,"extra_data":128,"updated_unix":130},105,"en","introduction-to-ecg-rhythms-basic-rhythm-interpretation","Introduction to ECG Rhythms - Basic Rhythm Interpretation","","This document provides a comprehensive foundational guide to electrocardiographic (ECG) interpretation and basic rhythm recognition, authored by Dr. William Brady. It details the cardiac electrical system, including intrinsic pacemaker cells such as the sinus node, AV junction, and Purkinje fibers, and their respective firing rates. The guide outlines standard components of an ECG strip, including the P wave, PR interval, and QRS complex, while establishing a systematic approach for evaluating cardiac rhythms, rate, and pacemaker function. Additionally, it touches upon clinical assessment criteria for critically ill patients, identifying signs of hemodynamic instability such as hypotension, altered mental status, and symptoms of myocardial ischemia or pulmonary edema, emphasizing the importance of recognizing conditions like inferolateral ST-elevation myocardial infarction (STEMI) accompanied by heart block.",{"@graph":69,"@context":123},[70,84,106],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":35,"@type":76,"position":81},"https://docshare.wps.com/document/healthcare/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/introduction-to-ecg-rhythms-basic-rhythm-interpretation/364408/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/introduction-to-ecg-rhythms-basic-rhythm-interpretation/364408.png","ImageObject",300,407,{"name":92,"@type":93},"4398046744996","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-29","2026-09-23",true,{"@type":102,"interactionType":103,"userInteractionCount":105},"InteractionCounter",{"@type":104},"ViewAction",11,{"@type":107,"mainEntity":108},"FAQPage",[109,115,119],{"name":110,"@type":111,"acceptedAnswer":112},"What are the three primary intrinsic pacemaker sites in the heart and their normal rates?","Question",{"text":113,"@type":114},"The primary pacemaker is the Sinus Node (60-100 bpm), followed by the AV Junction (40-60 bpm), and the Ventricular Purkinje fibers (less than 40 bpm).","Answer",{"name":116,"@type":111,"acceptedAnswer":117},"What is the normal duration for the PR interval and QRS complex in an ECG?",{"text":118,"@type":114},"The normal PR interval is 0.12-0.20 seconds, and the normal QRS complex duration is less than 0.10 seconds.",{"name":120,"@type":111,"acceptedAnswer":121},"What are the clinical signs of instability in a cardiac patient?",{"text":122,"@type":114},"Signs of instability include hypotension or hypoperfusion, altered mental status, chest pain associated with coronary ischemia, and dyspnea linked to pulmonary edema.","https://schema.org",{"og:url":83,"og:type":125,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":127,"canonical":83},"index,follow",{"doc_id":129,"site_id":62},364408,1790336814,{"code":4,"msg":5,"data":132},{"doc_id":129,"user_id":133,"nickname":92,"user_avatar":66,"doc_module":4,"category_id":34,"category_name":35,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":105,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":144,"read_time":145},4398046744996,"Electrocardiographic Interpretation  \nBasic Rhythm Recognition  \nWilliam Brady, MD  \nDepartment of Emergency Medicine  \nCardiac Rhythms  \nAnatomy of a Rhythm Strip   \nA Review of the Electrical System  \nIntrinsic Pacemakers Cells  \nThese cells have property known as “Automaticity”—means they can spontaneously depolarize.  \nSinus Node  \nPrimary pacemaker  \nFires at a rate of 60-100 bpm  \nAV Junction  \nFires at a rate of 40-60 bpm  \nVentricular (Purkinje Fibers)  \nLess than 40 bpm  \nWhat’s Normal  \nP Wave  \nAtrial Depolarization  \nPR Interval (Normal 0.12-0.20) Beginning of the P to onset of QRS  \nQRS  \nVentricular Depolarization  \nQRS Interval (Normal \u003C0.10)  \nPeriod (or length of time) it takes for the ventricles to depolarize  \nThe Key to Success…  \n…A systematic approach! Rate  \nRhythm  \nP Waves  \nPR Interval  \nP and QRS Correlation QRS Rate  \nPacemaker  \nA rather ill patient………  \nVery apparent inferolateral STEMI……with less apparent  \ncomplete heart block  \nStability  \nHypotension / hypoperfusion Altered mental status Chest pain  \n– Coronary ischemic Dyspnea  \n– Pulmonary edema","cbCaigRiKfZ22bhB","https://ap.wps.com/l/cbCaigRiKfZ22bhB","pdf",13429776,59,"English","# Electrical System and Intrinsic Pacemakers\n## Normal ECG Components\n# Systematic Rhythm Analysis\n## Clinical Stability Assessment","[{\"question\":\"What are the three primary intrinsic pacemaker sites in the heart and their normal rates?\",\"answer\":\"The primary pacemaker is the Sinus Node (60-100 bpm), followed by the AV Junction (40-60 bpm), and the Ventricular Purkinje fibers (less than 40 bpm).\"},{\"question\":\"What is the normal duration for the PR interval and QRS complex in an ECG?\",\"answer\":\"The normal PR interval is 0.12-0.20 seconds, and the normal QRS complex duration is less than 0.10 seconds.\"},{\"question\":\"What are the clinical signs of instability in a cardiac patient?\",\"answer\":\"Signs of instability include hypotension or hypoperfusion, altered mental status, chest pain associated with coronary ischemia, and dyspnea linked to pulmonary edema.\"}]","Introduction to ECG Rhythms - Basic Rhythm Interpretation | PDF",1790157471,149]