[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-26026-105":59,"doc-detail-26026-en":114},{"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":106,"head_meta":109,"extra_data":111,"updated_unix":113},105,"en","abnormalities-of-the-qrst-complex","Abnormalities of the QRST Complex","","This document, titled \"Abnormalities of the QRST Complex,\" focuses on critical aspects of electrocardiogram (ECG) interpretation, specifically addressing abnormalities within the QRST complex. Prepared and presented by Dr. Aisha Sattar, the material aims to equip viewers with the knowledge to differentiate between pathological and non-pathological Q waves. It delves into defining R wave progression, outlining its variations and underlying etiologies. Furthermore, the presentation identifies common abnormalities of the ST segment and T wave, thoroughly explaining their causes. The document provides a detailed explanation of Q waves, including their origin and significance in diagnosing myocardial infarction. It elaborates on how small septal Q waves, resulting from left-to-right depolarization of the septum, differ from pathological Q waves, which are wider than 40 ms (one small square) and deeper than 2 mm, indicating myocardial infarction. Specific infarction locations and their corresponding ECG leads (e.g., anterior wall infarction affecting leads V2-V4 or V5, inferior surface infarction affecting leads II, III, and aVF) are discussed. The document also addresses the complex ECG pattern observed in posterior wall infarction, characterized by a dominant R wave in lead V1 due to less opposition from left ventricular forces during right ventricular depolarization, simulating right ventricular hypertrophy but lacking other hypertrophic signs. It concludes by noting that once a Q wave develops due to infarction, it is typically permanent.",{"@graph":69,"@context":105},[70,84],{"@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/abnormalities-of-the-qrst-complex/26026/",{"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/abnormalities-of-the-qrst-complex/26026.png","ImageObject",300,407,{"name":92,"@type":93},"Maeve","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-09-17","2026-05-07",true,{"@type":102,"interactionType":103,"userInteractionCount":8},"InteractionCounter",{"@type":104},"ViewAction","https://schema.org",{"og:url":107,"og:type":108,"og:title":65,"og:site_name":95,"og:description":67},"https://docshare.wps.com/document/abnormalities-of-the-qrst-complex/26026","article",{"robots":110,"canonical":107},"index,follow",{"doc_id":112,"site_id":62},26026,1778195833,{"code":4,"msg":5,"data":115},{"doc_id":112,"user_id":116,"nickname":92,"user_avatar":117,"doc_module":4,"category_id":34,"category_name":35,"doc_title":65,"doc_description":67,"doc_content":66,"file_id":118,"file_url":119,"file_type":120,"file_size":121,"view_count":8,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":122,"language":123,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":66,"faqs":66,"seo_title":124,"seo_description":67,"update_tm":113,"read_time":125},5909877438554,"https://ap-avatar.wpscdn.com/avatar/5600025385ad2bf12a7?_k=1778553567797529272","cbCaibwjUkw6Ogxg","https://ap.wps.com/l/cbCaibwjUkw6Ogxg","pdf",3706687,33,"English","Abnormalities of the QRST Complex | PDF",83]