[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-370307-105":59,"doc-detail-370307-en":130},{"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":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","identifying-arrhythmias-learning-supplement","Identifying Arrhythmias - Learning Supplement","","Learning Supplement on identifying common cardiac arrhythmias using rhythm recognition and key ECG intervals. It summarizes hallmark patterns such as sinus rhythm, sinus bradycardia, first- and second-degree AV block types I and II, and third-degree AV block. Additional sections cover sinus tachycardia, atrial flutter, atrial fibrillation, monomorphic and polymorphic ventricular tachycardia, ventricular fibrillation, pulseless electrical activity, and asystole. Each condition lists characteristic rhythm, rate, P-wave and QRS features, plus PR and QT interval guidance.",{"@graph":69,"@context":122},[70,84,105],{"@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/identifying-arrhythmias-learning-supplement/370307/",{"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/identifying-arrhythmias-learning-supplement/370307.png","ImageObject",300,407,{"name":92,"@type":93},"Franzy","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-29","2026-09-23",true,{"@type":102,"interactionType":103,"userInteractionCount":52},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"How do you identify sinus rhythm on an ECG?","Question",{"text":112,"@type":113},"Look for a regular rhythm with P waves preceding every QRS complex, a QRS duration under 0.12 second, a normal T wave, and a PR interval of 0.12–0.20 second with a QT interval under 0.46 second.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"What ECG features distinguish second-degree AV block type I from type II?",{"text":117,"@type":113},"Type I shows a progressively lengthening PR interval until a QRS complex is dropped, then the pattern resets, with RR interval changes leading to the dropped beat. Type II shows PR intervals that are constant or \u003C0.20 second or prolonged, while dropped beats occur with QRS complexes usually under 0.12 second.",{"name":119,"@type":110,"acceptedAnswer":120},"What criteria help differentiate ventricular fibrillation, pulseless electrical activity, and asystole?",{"text":121,"@type":113},"Ventricular fibrillation has an absent P wave and no measurable/identifiable QRS or T wave, with an irregular ventricular rhythm. Pulseless electrical activity shows an identifiable rhythm on the monitor but no palpable pulse, with similar-appearing QRS complexes. Asystole shows absent atrial and absent ventricular activity, with absent P, QRS, and T waves and unmeasurable PR and QT intervals.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},370307,1790431763,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"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":52,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":24,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":143,"read_time":144},2336478945519,"https://ap-avatar.wpscdn.com/davatar_085a072bc5b1113ac321206ff7593b45","| |  |\n| --- | --- |\n| LEARNING SUPPLEMENT\u003Cbr>Identifying Arrhythmias\u003Cbr> ~~Sinus Rhythm ~~ |  |\n| Rhythm: regular (atrial and ventricular)\u003Cbr>Rate: 60–100 beats/min (atrial and ventricular)\u003Cbr>P wave: precedes every QRS complex\u003Cbr>QRS complex: \u003C 0.12 second, regular\u003Cbr>T wave: normal\u003Cbr>PR interval: 0.12 –0.20 second\u003Cbr>QT interval: \u003C 0.46 second | |\n|  ~~Sinus Brady~~car~~dia ~~ |  |\n| Rhythm: regular (atrial and ventricular) Rate: \u003C 60 beats/min (atrial and ventricular) P wave: precedes every QRS complex QRS complex: \u003C 0.12 second, regular\u003Cbr>T wave: normal\u003Cbr>PR interval: 0.12 –0.20 second\u003Cbr>QT interval: \u003C 0.46 second | |\n|  ~~First~~-~~degree AV Block ~~ |  |\n| Rhythm: regular (atrial and ventricular)\u003Cbr>Rate: 60–100 beats/min (atrial and ventricular)\u003Cbr>P wave: precedes every QRS complex, normal morphology\u003Cbr>QRS complex: \u003C 0.12 second if delay in AV node,> 0.12 second if delay distal to AV node\u003Cbr>T wave: normal unless QRS complex is prolonged\u003Cbr>PR interval: > 0.20 second\u003Cbr>QT interval: \u003C 0.46 second | |\n\n© 2019 The American National Red Cross. ALL RIGHTS RESERVED | 1  \nLEARNING SUPPLEMENT  \nIdentifying Arrhythmias (continued)  \n ~~Second~~-~~degree AV Block T~~ype~~ I ~~  \nRhythm: regular (atrial), irregular (ventricular); RR interval becomes progressively shorter leading up to the dropped beat, then cycle repeats  \nRate: 60–100 beats/min (atrial and ventricular); atrial rate > ventricular rate  \nP wave: Normal morphology  \nQRS complex: usually \u003C 0.12 second; occasionally dropped  \nT wave: normal  \nPR interval: becomes progressively longer until QRS complex is dropped; then resets  \nQT interval: \u003C 0.46 second  \n~~Second~~-~~degree AV Block T~~ype~~ II ~~  \nRhythm: regular (atrial), regular or irregular (ventricular); if blocked impulses occur in a pattern the rhythm is regular  \nRate: usually 60–100 beats/min (atrial and ventricular); atrial rate > ventricular rate  \nP wave: normal morphology  \nQRS complex: usually \u003C 0.12 second; occasionally dropped  \nT wave: normal morphology  \nPR interval: \u003C 0.20 second or prolonged; constant  \nQT interval: \u003C 0.46 second  \n© 2019 The American National Red Cross. ALL RIGHTS RESERVED | 2  \n\n| LEARNING SUPPLEMENT\u003Cbr>Identifying Arrhythmias (continued)\u003Cbr> ~~Third~~-~~degree AV Block ~~\u003Cbr>Rhythm: regular (atrial and ventricular), atrial and ventricular rhythms are dissociated\u003Cbr>Rate: 60–100 beats/min (atrial): 20–60 beats/min (ventricular); atrial rate > ventricular rate\u003Cbr>P wave: normal morphology\u003Cbr>QRS complex: morphology and duration depend on location of pacemaker; AV junctional pacemaker = narrow QRS complexes; ventricular pacemaker = wide, bizarre QRS complexes\u003Cbr>T wave: normal unless ventricular pacemaker\u003Cbr>PR interval: unmeasurable (AV dissociation)\u003Cbr>QT interval: \u003C 0.46 second\u003Cbr>\u003Cbr> ~~Sinus T~~ac~~hycardia ~~ |  |\n| --- | --- |\n| Rhythm: regular (atrial and ventricular)\u003Cbr>Rate: 100–150 beats/min (atrial and ventricular)\u003Cbr>P wave: precedes every QRS complex\u003Cbr>QRS complex: \u003C 0.12 second, regular\u003Cbr>T wave: normal\u003Cbr>PR interval: 0.12 – 0.20 second\u003Cbr>QT interval: \u003C 0.46 second | |\n|  ~~Atrial Flutter  ~~ |  |\n| Rhythm: regular (atrial), usually regular but may be irregular (ventricular)\u003Cbr>Rate: 250–350 beats/min (atrial), 60–100 beats/min (ventricular; dependent on degree of AV block)\u003Cbr>P wave: sawtooth pattern\u003Cbr>QRS complex: \u003C 0.12 second, regular\u003Cbr>T wave: not identifiable\u003Cbr>PR interval: unmeasurable\u003Cbr>QT interval: unmeasurable | |\n\n© 2019 The American National Red Cross. ALL RIGHTS RESERVED | 3  \n\n| LEARNING SUPPLEMENT\u003Cbr>Identifying Arrhythmias (continued)\u003Cbr> ~~Atrial Fibrillation  ~~ |  |\n| --- | --- |\n| Rhythm: irregularly irregular (atrial and ventricular)\u003Cbr>Rate: >350 beats/min (atrial), 40–250 beats/min (ventricular)\u003Cbr>P wave: not identifiable (fibrillation waves)\u003Cbr>QRS complex: irregularly irregular\u003Cbr>T wave: not identifiable\u003Cbr>PR interval: unmeasurable\u003Cbr>QT interval: unmeasurable | |\n|  ~~Monomorphic Ventricular T~~ac~~hycardia ~~ |  |\n| Rhy","cbCaikVuv9xzBkR0","https://ap.wps.com/l/cbCaikVuv9xzBkR0","pdf",1343276,"English","# Identifying Arrhythmias\n## Sinus rhythm and conduction blocks\n## Sinus tachycardia and atrial arrhythmias\n## Ventricular arrhythmias and cardiac arrest rhythms","[{\"question\":\"How do you identify sinus rhythm on an ECG?\",\"answer\":\"Look for a regular rhythm with P waves preceding every QRS complex, a QRS duration under 0.12 second, a normal T wave, and a PR interval of 0.12–0.20 second with a QT interval under 0.46 second.\"},{\"question\":\"What ECG features distinguish second-degree AV block type I from type II?\",\"answer\":\"Type I shows a progressively lengthening PR interval until a QRS complex is dropped, then the pattern resets, with RR interval changes leading to the dropped beat. Type II shows PR intervals that are constant or \\u003c0.20 second or prolonged, while dropped beats occur with QRS complexes usually under 0.12 second.\"},{\"question\":\"What criteria help differentiate ventricular fibrillation, pulseless electrical activity, and asystole?\",\"answer\":\"Ventricular fibrillation has an absent P wave and no measurable/identifiable QRS or T wave, with an irregular ventricular rhythm. Pulseless electrical activity shows an identifiable rhythm on the monitor but no palpable pulse, with similar-appearing QRS complexes. Asystole shows absent atrial and absent ventricular activity, with absent P, QRS, and T waves and unmeasurable PR and QT intervals.\"}]","Identifying Arrhythmias - Learning Supplement | PDF",1790187906,13]