[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-1-en-105":3,"doc-seo-572908-105":53,"doc-detail-572908-en":126},{"code":4,"msg":5,"data":6},0,"success",[7,14,19,24,29,34,39,44,49],{"id":8,"doc_module":9,"doc_module_name":10,"category_name":11,"show_sort_weight":12,"slug":13},11,1,"Template","Presentations",90,"presentations",{"id":15,"doc_module":9,"doc_module_name":10,"category_name":16,"show_sort_weight":17,"slug":18},12,"Resumes",80,"resumes",{"id":20,"doc_module":9,"doc_module_name":10,"category_name":21,"show_sort_weight":22,"slug":23},14,"Invoices",70,"invoices",{"id":25,"doc_module":9,"doc_module_name":10,"category_name":26,"show_sort_weight":27,"slug":28},15,"Posters",60,"posters",{"id":30,"doc_module":9,"doc_module_name":10,"category_name":31,"show_sort_weight":32,"slug":33},16,"Social Media",50,"social-media",{"id":35,"doc_module":9,"doc_module_name":10,"category_name":36,"show_sort_weight":37,"slug":38},17,"Forms",40,"forms",{"id":40,"doc_module":9,"doc_module_name":10,"category_name":41,"show_sort_weight":42,"slug":43},18,"Letters",30,"letters",{"id":45,"doc_module":9,"doc_module_name":10,"category_name":46,"show_sort_weight":47,"slug":48},21,"Paper Templates",5,"papers-templates",{"id":50,"doc_module":9,"doc_module_name":10,"category_name":51,"show_sort_weight":4,"slug":52},158,"General","general-158",{"code":4,"msg":54,"data":55},"ok",{"site_id":56,"language":57,"slug":58,"title":59,"keywords":60,"description":61,"schema_data":62,"social_meta":119,"head_meta":121,"extra_data":123,"updated_unix":125},105,"en","understanding-heart-blocks-first-degree","Understanding Heart Blocks - First Degree","","This document provides a medical overview of First Degree Atrioventricular (AV) Heart Block. It explains the anatomy of the heart's electrical system, defines the characteristics of a normal sinus rhythm, and details the specific diagnostic criteria for a first-degree block, where the PR interval exceeds 0.20 seconds due to slowed conduction through the junction. The content covers potential symptoms such as nausea, vomiting, and chest pain, while outlining clinical management approaches, including patient monitoring and symptom-based treatment strategies. The text serves as an educational resource for healthcare professionals or students seeking to differentiate between various heart block types and understand the clinical significance of delayed PR intervals in electrocardiogram (ECG) interpretation. By emphasizing the predictable yet delayed relationship between the P-wave and QRS complex, it facilitates easier recognition and accurate diagnostic assessment of this cardiac conduction abnormality in a clinical setting.",{"@graph":63,"@context":118},[64,80,101],{"@type":65,"itemListElement":66},"BreadcrumbList",[67,71,74,77],{"item":68,"name":69,"@type":70,"position":9},"https://docshare.wps.com","Home","ListItem",{"item":72,"name":10,"@type":70,"position":73},"https://docshare.wps.com/template/",2,{"item":75,"name":51,"@type":70,"position":76},"https://docshare.wps.com/template/general/",3,{"item":78,"name":59,"@type":70,"position":79},"https://docshare.wps.com/template/understanding-heart-blocks-first-degree/572908/",4,{"url":78,"name":59,"@type":81,"image":82,"author":87,"headline":59,"publisher":90,"fileFormat":93,"inLanguage":57,"description":61,"dateModified":94,"datePublished":95,"encodingFormat":93,"isAccessibleForFree":96,"interactionStatistic":97},"DigitalDocument",{"url":83,"@type":84,"width":85,"height":86},"https://docshare.wps.com/thumbnails/understanding-heart-blocks-first-degree/572908.png","ImageObject",442,249,{"name":88,"@type":89},"\tCallum ","Person",{"url":68,"name":91,"@type":92},"DocShare","Organization","application/pdf","2026-10-16","2026-10-13",true,{"@type":98,"interactionType":99,"userInteractionCount":47},"InteractionCounter",{"@type":100},"ViewAction",{"@type":102,"mainEntity":103},"FAQPage",[104,110,114],{"name":105,"@type":106,"acceptedAnswer":107},"What defines a first-degree heart block on an ECG?","Question",{"text":108,"@type":109},"A first-degree heart block is characterized by a prolonged PR interval that exceeds 0.20 seconds, indicating that electrical transmission through the AV junction is slowed.","Answer",{"name":111,"@type":106,"acceptedAnswer":112},"What are the common symptoms of a first-degree heart block?",{"text":113,"@type":109},"Patients may be asymptomatic, but potential symptoms include nausea, vomiting, and chest pain.",{"name":115,"@type":106,"acceptedAnswer":116},"How is a first-degree heart block typically treated?",{"text":117,"@type":109},"It often does not require specific treatment if the patient is asymptomatic; however, it generally necessitates prolonged ECG monitoring to ensure the condition remains stable.","https://schema.org",{"og:url":78,"og:type":120,"og:title":59,"og:site_name":91,"og:description":61},"article",{"robots":122,"canonical":78},"index,follow",{"doc_id":124,"site_id":56},572908,1792086196,{"code":4,"msg":5,"data":127},{"doc_id":124,"user_id":128,"nickname":88,"user_avatar":129,"doc_module":9,"category_id":50,"category_name":51,"doc_title":59,"doc_description":61,"doc_content":130,"file_id":131,"file_url":132,"file_type":133,"file_size":134,"view_count":47,"is_deleted":4,"is_public":9,"is_downloadable":9,"audit_status":9,"page_count":135,"language":136,"language_code":57,"site_id":56,"html_lang":57,"table_of_contents":137,"faqs":138,"seo_title":139,"seo_description":61,"update_tm":140,"read_time":141},137451211410,"https://ap-avatar.wpscdn.com/avatar/2000bb0a9246f588df?x-image-process=image/resize,m_fixed,w_180,h_180&k=1786362646172706240","Understanding Heart Blocks  \nObjectives  \n• Review anatomy of the electrical system of the heart  \n• Discuss 4 major heart blocks  \n• Provide a means to remain how to keep from getting them confused  \n• Discuss treatment options for patients experiencing a heart block  \nAssumptions and Disclosures  \n• Traditional terms will be used – not trying to offend anyone, SO…  \n• Thicken your skin  \n• Have fun with it  \n• Always remember… Its ALWAYS the guy’s fault  \nReview of the anatomy  \nThe Norms – Meet P and QRS Normal Sinus Rhythm  \n– Regular rhythm  \n– 60 – 100 bpm  \n– P wave for each QRS  \n– PR interval between .12 and .20 seconds  \n– QRS is less than .12 seconds  \nNormal Sinus Rhythm  \n• The default heart rhythm  \n• P wave is there and QRS follows each time and in a predictable manner  \n• PR interval is constant  \n• Perfect symmetry for our couple  \n1 st Degree Heart Block  \n• Transmission is slowed through the junction  \n• Creating prolonged PR interval 􀃆 PR interval is > .20 seconds  \n1 st Degree Heart Block  \n• Relationship between P and QRS has changed  \n– QRS is coming home later than usual, but at the same time every night  \n1 st Degree Heart Block  \nSymptoms  \n• May be asymptomatic  \n• Nausea  \n• Vomiting  \n• Chest Pain  \nTreatment  \n• May not require treatment  \n• Patient may not know this is their underlying rhythm  \n• Treat symptoms  \n• Generally require prolonged monitoring of ECG (in or out of hospital)","cbCaipaxeR0cF90y","https://ap.wps.com/l/cbCaipaxeR0cF90y","pdf",956507,24,"English","# Understanding Heart Blocks\n## Review of Anatomy\n## Normal Sinus Rhythm\n## First Degree Heart Block\n## Symptoms and Treatment","[{\"question\":\"What defines a first-degree heart block on an ECG?\",\"answer\":\"A first-degree heart block is characterized by a prolonged PR interval that exceeds 0.20 seconds, indicating that electrical transmission through the AV junction is slowed.\"},{\"question\":\"What are the common symptoms of a first-degree heart block?\",\"answer\":\"Patients may be asymptomatic, but potential symptoms include nausea, vomiting, and chest pain.\"},{\"question\":\"How is a first-degree heart block typically treated?\",\"answer\":\"It often does not require specific treatment if the patient is asymptomatic; however, it generally necessitates prolonged ECG monitoring to ensure the condition remains stable.\"}]","Understanding Heart Blocks - First Degree | PDF",1791930026,8]