[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-370620-105":59,"doc-detail-370620-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","stemi-locations-and-reciprocal-changes-clinical-reference-guide","STEMI Locations and Reciprocal Changes - Clinical Reference Guide","","This clinical reference guide provides a comprehensive overview of ST-Elevation Myocardial Infarction (STEMI) location diagnostics based on 12-lead electrocardiogram changes and associated arterial supply. It details the PAILS mnemonic—Posterior, Anterior, Inferior, Lateral, and Septal—to assist healthcare professionals in identifying infarct sites. The document explains the physiological significance of lead changes, the concept of reciprocal changes on the opposite side of the myocardium, and critical coronary artery involvement, such as the LAD 'widow maker' and inferior wall 'boot' patterns. By standardizing the interpretation of ST-segment elevation and depression, this resource serves as an essential tool for rapid cardiac event assessment and clinical decision-making. The included summary table and annotated ECG trace facilitate accurate localization of myocardial injury and help clinicians correlate electrical patterns with specific coronary anatomical structures effectively.",{"@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/stemi-locations-and-reciprocal-changes-clinical-reference-guide/370620/",{"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/stemi-locations-and-reciprocal-changes-clinical-reference-guide/370620.png","ImageObject",300,407,{"name":92,"@type":93},"Levi","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-11-02","2026-09-23",true,{"@type":102,"interactionType":103,"userInteractionCount":8},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What does the PAILS mnemonic represent in the context of STEMI?","Question",{"text":112,"@type":113},"PAILS is a memory aid for identifying STEMI locations: Posterior, Anterior, Inferior, Lateral, and Septal wall infarctions.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"Why is the anterior wall infarction often referred to as the 'Widow Maker'?",{"text":117,"@type":113},"It involves the Left Anterior Descending (LAD) artery, which is the largest coronary artery; its blockage affects a significant portion of the heart's myocardium.",{"name":119,"@type":110,"acceptedAnswer":120},"How do reciprocal changes assist in confirming a STEMI?",{"text":121,"@type":113},"Reciprocal changes are ST-segment depressions observed in leads opposite to the site of the infarction, providing diagnostic confirmation of a true STEMI event.","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},370620,1790189499,{"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":8,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":8,"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":129,"read_time":81},7971461740909,"https://ap-avatar.wpscdn.com/davatar_155a257f0dc6eb9ab79c44ca47cae57d","Big LII, Little LI, ASS (backwards), ALL: Pneumonic help remember STEMI Locations  \n“The Boot”: Elevation in II, III, aVF (Inferior STEMI) patients (with RVI) vitals are typically in their “boots”.  \n “Widow Maker”: Elevation in V1-V4; affects the entire left anterior descending (LAD) artery which is the largest coronary artery of the heart. Modified 12 Leads: Only with Inferior STEMI  \nReciprocal Changes: ST Depression on the mirror side of STEMI location = True STEMI  \n􀃇 Posterior = 􀃈 Anterior Leads  \n􀃇 Anterior = 􀃈 Inferior Leads  \n􀃇 Inferior = 􀃈 Lateral Leads  \n􀃇 Lateral = 􀃈 Septal Leads  \n􀃇 Septal = 􀃈 Posterior Leads","cbCaiocz3s16rhqV","https://ap.wps.com/l/cbCaiocz3s16rhqV","pdf",298928,"English","# STEMI Location Mnemonics\n## PAILS and Clinical Associations\n# ECG Diagnostic Standards\n## 12-Lead Changes\n## Reciprocal Changes and Anatomical Correlation","[{\"question\":\"What does the PAILS mnemonic represent in the context of STEMI?\",\"answer\":\"PAILS is a memory aid for identifying STEMI locations: Posterior, Anterior, Inferior, Lateral, and Septal wall infarctions.\"},{\"question\":\"Why is the anterior wall infarction often referred to as the 'Widow Maker'?\",\"answer\":\"It involves the Left Anterior Descending (LAD) artery, which is the largest coronary artery; its blockage affects a significant portion of the heart's myocardium.\"},{\"question\":\"How do reciprocal changes assist in confirming a STEMI?\",\"answer\":\"Reciprocal changes are ST-segment depressions observed in leads opposite to the site of the infarction, providing diagnostic confirmation of a true STEMI event.\"}]","STEMI Locations and Reciprocal Changes - Clinical Reference Guide | PDF"]