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profesores",{"title":54,"url":55},{"title":57,"url":58},{"title":152,"group":48,"menu":153},"Producto",[154,156,157,158,159,160,161],{"title":155,"url":7},"Cursos",{"title":65,"url":66},{"title":68,"url":69},{"title":71,"url":72},{"title":74,"url":75},{"title":35,"url":77},{"title":31,"url":10},{"title":163,"group":48,"menu":164},"Información legal",[165,167,168,169,170],{"title":166,"url":84},"Aviso legal",{"title":86,"url":87},{"title":89,"url":90},{"title":92,"url":93},{"title":95,"url":96},{"title":172,"group":48,"menu":173},"Atención al cliente",[174,175,176],{"title":101,"url":102},{"title":104,"url":105},{"title":107,"url":108},[178,185,196,204],{"title":179,"group":48,"menu":180},"Entreprise",[181,183,184],{"title":182,"url":52},"Nos enseignants",{"title":54,"url":55},{"title":57,"url":58},{"title":186,"group":48,"menu":187},"Produit",[188,189,190,191,192,193,194],{"title":38,"url":7},{"title":65,"url":66},{"title":68,"url":69},{"title":71,"url":72},{"title":74,"url":75},{"title":15,"url":77},{"title":195,"url":10},"Tarification",{"title":197,"group":48,"menu":198},"Mentions légales",[199,200,201,202,203],{"title":197,"url":84},{"title":86,"url":87},{"title":89,"url":90},{"title":92,"url":93},{"title":95,"url":96},{"title":205,"group":48,"menu":206},"Service client",[207,208,209],{"title":101,"url":102},{"title":104,"url":105},{"title":107,"url":108},{"content":211,"related":297,"meta":375,"internal":386},{"title":212,"leadIn":213,"category":214,"elements":217,"becomeAnExpert":247,"author":286,"readDuration":295,"readDurationFormatted":296},"Obtaining a pediatric ECG: beyond the standard 12-lead ECG","A pediatric ECG includes more than the standard 12-lead ECG used in adults. Learn why three additional leads are routinely included and how a 15-lead ECG provides a more complete cardiovascular assessment in children.",{"id":215,"name":216},1,"Course previews",[218,229,234,242],{"type":219,"data":220},"video",{"readDurationInSeconds":221,"video":222},238,{"platform":223,"name":224,"url":225,"size":226},"YouTube","Pediatric 15-Lead ECG Placement: Adding V7 and Right-Sided ECG Leads to a 12-Lead ECG","https:\u002F\u002Fyoutu.be\u002F2NaYVg5rsHY",{"width":227,"height":228},200,113,{"type":230,"data":231},"free_text",{"readDurationInSeconds":232,"text":233},24.53333333333333,"\u003Cp>Most clinicians are familiar with the standard 12-lead ECG, but pediatric ECG acquisition routinely includes three additional leads. The 15-lead ECG can provide valuable information about cardiac position, anatomy, and electrical activity, supporting a more comprehensive cardiovascular assessment in children.\u003Cbr>\u003Cbr>In this lesson from our \u003Ca href=\"https:\u002F\u002Fwww.medmastery.com\u002Fcourses\u002Fpediatric-ecg\">Pediatrics ECG\u003C\u002Fa> course, you'll learn how to:\u003C\u002Fp>\u003Cul>\u003Cli data-list-item-id=\"e8c84ce5a55f77b972e5c9cdd78c78bc6\">Differentiate a pediatric 15-lead ECG from a standard 12-lead ECG\u003C\u002Fli>\u003Cli data-list-item-id=\"e558fcd9928529b31dab8cebae67c520c\">Position V3R, V4R, and V7 leads in preparation for pediatric ECG \u003C\u002Fli>\u003Cli data-list-item-id=\"e0fb72b170262b3a27abb695652b568cf\">Explain the role of right-sided ECG leads in identifying dextrocardia\u003C\u002Fli>\u003Cli data-list-item-id=\"e57799eb69714d3f3ceffc3fa742f0cca\">Describe the role of V7 in assessing the lateral wall of the left ventricle\u003C\u002Fli>\u003Cli data-list-item-id=\"ebd5089a0ad8c1c001f9360a057c43eef\">Recognize the value of a 15-lead ECG in the cardiovascular assessment in children\u003C\u002Fli>\u003C\u002Ful>\u003Cp> \u003C\u002Fp>",{"type":235,"data":236},"cta",{"readDurationInSeconds":237,"text":238,"buttonText":239,"buttonUrl":240,"teachIllustration":241},3.466666666666667,"Start the first chapter of our Pediatric ECG course for free","Start chapter 1 now","https:\u002F\u002Fwww.medmastery.com\u002Fuser\u002Fregister?target=%2Fcourses%2Fpediatric-ecg","https:\u002F\u002Fmedmastery-backend-prod-kjbeds.s3.eu-west-1.amazonaws.com\u002Fmedia\u002Fimages\u002F9ef4d221-3557-42c8-b8a6-ffbdf95f7cd0",{"type":230,"data":243},{"readDurationInSeconds":244,"title":245,"text":246},121.86666666666666,"Transcript","\u003Cp dir=\"ltr\">\u003Cspan>[0:00]\u003C\u002Fspan>\u003Cbr>\u003Cspan>In another Medmastery lesson, we discussed the physiological differences between the pediatric and adult hearts, as well as the cardiopulmonary changes that occur in the pediatric patient. Now let's discuss the differences in preparing to perform an ECG on a child, as the process of collecting the ECG is also slightly different.\u003C\u002Fspan>\u003C\u002Fp>\u003Ch3 dir=\"ltr\">\u003Cspan>The standard 12-lead ECG\u003C\u002Fspan>\u003C\u002Fh3>\u003Cp dir=\"ltr\">\u003Cspan>[0:22]\u003C\u002Fspan>\u003Cbr>\u003Cspan>We are familiar with the conventional ECG used for adults, which consists of six limb leads, I, II, III, aVR, aVL, and aVF, and six precordial leads, V1 through V6, placed on the chest, for a total of 12 leads captured by 10 electrodes.\u003C\u002Fspan>\u003C\u002Fp>\u003Ch3 dir=\"ltr\">\u003Cspan>Pediatric ECG: using a 15-lead ECG\u003C\u002Fspan>\u003C\u002Fh3>\u003Cp dir=\"ltr\">\u003Cspan>[0:41]\u003C\u002Fspan>\u003Cbr>\u003Cspan>But the standard approach for obtaining an ECG in pediatric patients less than 18 years is to use 15 leads captured by placing an additional three electrodes on the chest. The three additional electrodes correspond to three leads, V3R, V4R, and V7.\u003C\u002Fspan>\u003C\u002Fp>\u003Ch3 dir=\"ltr\">\u003Cspan>Placement of V3R, V4R, and V7 leads\u003C\u002Fspan>\u003C\u002Fh3>\u003Cp dir=\"ltr\">\u003Cspan>[1:02]\u003C\u002Fspan>\u003Cbr>\u003Cspan>V3R and V4R are right-sided precordial leads that are placed on the right side of the chest, mirroring the positions of their counterpart leads, V3 and V4, which are located on the left side. V7 is placed in the fifth intercostal space along the left posterior axillary line, just to the left and behind V6.\u003C\u002Fspan>\u003C\u002Fp>\u003Ch3 dir=\"ltr\">\u003Cspan>Why right-sided ECG leads are used\u003C\u002Fspan>\u003C\u002Fh3>\u003Cp dir=\"ltr\">\u003Cspan>[1:25]\u003C\u002Fspan>\u003Cbr>\u003Cspan>These additional leads are meant to provide ECG information from the right side of the chest. But why would we need ECG information on the right side of the chest when the heart is located on the left side? Well, because the heart isn't always on the left side, known as levocardia. In some patients, the heart is located on the right side of the chest, or dextrocardia. Congenital conditions like this are often identified during childhood, where establishing a baseline can be helpful for future assessments and management. \u003C\u002Fspan>\u003C\u002Fp>\u003Ch3 dir=\"ltr\">\u003Cspan>Detecting dextrocardia on ECG\u003C\u002Fspan>\u003C\u002Fh3>\u003Cp dir=\"ltr\">\u003Cspan>[1:56]\u003C\u002Fspan>\u003Cbr>\u003Cspan>Right-sided leads ensure a comprehensive assessment of the heart's electrical activity when it's positioned atypically. Though dextrocardia is uncommon, occurring in about one in every 12,000 patients, patients with congenital heart disease are much more likely to have dextrocardia. Placing leads on the right side of the heart makes it much easier to identify this variant on a conventional ECG.\u003C\u002Fspan>\u003C\u002Fp>\u003Ch3 dir=\"ltr\">\u003Cspan>How V7 improves cardiovascular assessment in children\u003C\u002Fspan>\u003C\u002Fh3>\u003Cp dir=\"ltr\">\u003Cspan>[2:23]\u003C\u002Fspan>\u003Cbr>\u003Cspan>The third additional ECG lead for pediatric patients is V7, recorded by an electrode placed on the left side. V7 provides information on the far left side of the heart, specifically the electrical activity on the lateral wall of the left ventricle, helping to identify electrical abnormalities that standard leads might miss.\u003C\u002Fspan>\u003C\u002Fp>\u003Ch3 dir=\"ltr\">\u003Cspan>The clinical value of V7 in pediatric ECG\u003C\u002Fspan>\u003C\u002Fh3>\u003Cp dir=\"ltr\">\u003Cspan>[2:45]\u003C\u002Fspan>\u003Cbr>\u003Cspan>This is particularly valuable in pediatric patients with unique or developing cardiac physiology, including those with congenital heart defects, suspected arrhythmias, or conditions such as right ventricular hypertrophy or ischemia. These additional leads provide a more comprehensive view, helping to detect subtle abnormalities in the posterior or lateral walls that might otherwise be overlooked.\u003C\u002Fspan>\u003C\u002Fp>\u003Ch3 dir=\"ltr\">\u003Cspan>When to use a 15-lead ECG in children\u003C\u002Fspan>\u003C\u002Fh3>\u003Cp dir=\"ltr\">\u003Cspan>[3:11]\u003C\u002Fspan>\u003Cbr>\u003Cspan>You may be wondering when it is appropriate to use a 15-lead ECG. As a pediatric electrophysiologist, I would say on every child requiring an ECG, as we cannot assume a patient will have normal left-sided heart positioning.\u003C\u002Fspan>\u003C\u002Fp>\u003Ch3 dir=\"ltr\">\u003Cspan>Benefits of using 15-Lead ECG in pediatrics\u003C\u002Fspan>\u003C\u002Fh3>\u003Cp dir=\"ltr\">\u003Cspan>[3:26]\u003C\u002Fspan>\u003Cbr>\u003Cspan>Acquiring a 15-lead ECG requires minimal additional time and can provide useful information in detecting right ventricular strain, congenital heart defects, or subtle ischemic changes in the pediatric setting.\u003C\u002Fspan>\u003C\u002Fp>",{"courses":248,"showAwardsBelow":48},[249,269],{"id":250,"isFreeCmeCourse":251,"title":252,"type":253,"specialization":254,"teachers":256,"cmeCredits":258,"teacherIllustration":259,"backgroundImage":260,"relativeUrl":261,"lastChanged":262,"created":263,"description":264,"relativeURL":261,"meta":265},13848,false,"Pediatric Echocardiography","course",[255],"Pediatrics",[257],"Deane Yim, MBChB FRACP",5,"https:\u002F\u002Fmedmastery-backend-prod-kjbeds.s3.eu-west-1.amazonaws.com\u002Fmedia\u002Fimages\u002F9c022ebb-86fe-4871-88ef-4049e4d1f93a","https:\u002F\u002Fmedmastery-backend-prod-kjbeds.s3.eu-west-1.amazonaws.com\u002Fmedia\u002Fimages\u002F9c022ebc-6773-4d9e-a79a-ac036715e5bb","\u002Fcourses\u002Fpediatric-echocardiography","1778576178","1722335254","There are important differences in the way that pediatric echo is performed compared to adult echo. After attending this course, you’ll gain the necessary skills to perform a standard pediatric transthoracic echocardiogram—from patient preparation and probe selection to interpretation of pediatric echo images, and screening for congenital heart disease. Dive into this fascinating course!",{"duration":266,"quizzes":267,"lessons":268},14322,7,53,{"id":270,"isFreeCmeCourse":251,"title":271,"type":253,"specialization":272,"teachers":273,"cmeCredits":275,"teacherIllustration":276,"backgroundImage":277,"relativeUrl":278,"lastChanged":279,"created":280,"description":281,"relativeURL":278,"meta":282},14073,"Pediatric Emergencies",[255],[274],"Kellie Rice-Monteiro, DO FAAP",4,"https:\u002F\u002Fmedmastery-backend-prod-kjbeds.s3.eu-west-1.amazonaws.com\u002Fmedia\u002Fimages\u002F9f3d6528-0f21-4040-a23f-106104d8579f","https:\u002F\u002Fmedmastery-backend-prod-kjbeds.s3.eu-west-1.amazonaws.com\u002Fmedia\u002Fimages\u002F9f3d6531-c98e-4f59-b29e-fcc9b69a80c4","\u002Fcourses\u002Fpediatric-emergencies","1771605137","1750861398","\u003Cspan id=\"docs-internal-guid-037dc046-7fff-58f7-f00e-f05ec83b6ce4\">Don’t let the next high-stakes case catch you off guard. This pediatric emergency medicine course gives you the skills to confidently assess and treat critically ill or injured children—from fevers in infants to full-blown respiratory distress. You'll learn exactly why kids aren't just little adults, as well as when and how to act fast in cases like traumatic brain injuries, anaphylaxis, and appendicitis.\u003C\u002Fspan>",{"duration":283,"quizzes":284,"lessons":285},7825,8,36,{"id":287,"name":288,"image":289,"profession":290,"relativeUrl":293,"specializations":294},14047,"Peter F. Aziz, MD FHRS","https:\u002F\u002Fmedmastery-backend-prod-kjbeds.s3.eu-west-1.amazonaws.com\u002Fmedia\u002Fimages\u002F9ef4d18d-7b35-4843-a39a-5e3495d544df",{"name":291,"description":292},"Pediatric Electrophysiologist","\u003Cspan id=\"docs-internal-guid-bb2fbf38-7fff-c33a-a26a-a82f9d2d9c4a\">Pediatric Electrophysiologist, Professor of Pediatrics, and founder and director of the Inherited Arrhythmia Clinic.\u003C\u002Fspan>","\u002Fteachers\u002Fpeter-f-aziz-md-fhrs",[255],160,"3m",[298,326,351],{"id":299,"title":300,"text":301,"image":302,"author":311,"path":320,"readDuration":321,"readDurationFormatted":296,"internal":322},1354,"Evaluating bleeding & abdominal pain in early pregnancy","Learn how to evaluate a patient presenting with vaginal bleeding and abdominal pain in early pregnancy when ectopic pregnancy is a concern.",{"alt":303,"title":304,"size":305,"location":308},"Medical illustration of an ectopic pregnancy implanted in the fallopian tube outside the uterus","",{"width":306,"height":307},1201,1200,{"bucket":309,"key":310},"public-drupal-medmastery-assets-production","\u002F2026-06\u002FC144(2)_magazine image.png",{"id":312,"title":313,"relativeURL":314,"image":315,"professionLong":316,"profession":317,"weight":319},12787,"Tori O’Daniel, MD FACOG","\u002Fteachers\u002Ftori-odaniel-md-facog","https:\u002F\u002Fmedmastery-backend-prod-kjbeds.s3.eu-west-1.amazonaws.com\u002Fmedia\u002Fimages\u002F9c43cf00-58e5-4b12-9d94-ce4fcf5697fc","Tori is a lead obstetrician (OB) hospitalist and Medical Director of OB Hospitalists and Women’s Services at Mercy Hospital, Oklahoma City.",{"name":318},"Lead obstetrician hospitalist",5312,"\u002Fmagazine\u002Fabdominal-pain-in-early-pregnancy",172,{"created":323,"updated":324,"published":325},1780855964,1780858467,1780858468,{"id":327,"title":328,"text":329,"image":330,"author":336,"path":345,"readDuration":228,"readDurationFormatted":346,"internal":347},1353,"Gestational age ultrasound in early pregnancy evaluation","Learn how to obtain the correct ultrasound views and accurately measure crown-rump length and biparietal diameter to estimate gestational age.",{"alt":331,"title":304,"size":332,"location":334},"Gestational age ultrasound image demonstrating crown-rump length measurement in the first trimester",{"width":333,"height":333},900,{"bucket":309,"key":335},"\u002F2026-05\u002FC144(1)_magazine image.png",{"id":337,"title":338,"relativeURL":339,"image":340,"professionLong":341,"profession":342,"weight":344},2976,"Viveta Lobo, MD","\u002Fteachers\u002Fviveta-lobo-md","https:\u002F\u002Fmedmastery-backend-prod-kjbeds.s3.eu-west-1.amazonaws.com\u002Fmedia\u002Fimages\u002F9c43cefc-7f09-4a9a-9865-4aeea3cef318","\u003Cspan id=\"docs-internal-guid-57fc7959-7fff-8d74-e680-4d8102bdd254\">Associate Professor, Department of Emergency Medicine at Stanford University Medical Center in California, USA.\u003C\u002Fspan>",{"name":343},"Emergency medicine physician",507,"\u002Fmagazine\u002Fgestational-age-ultrasound","2m",{"created":348,"updated":349,"published":350},1780168728,1780322380,1780169720,{"id":352,"title":353,"text":354,"image":355,"author":360,"path":368,"readDuration":369,"readDurationFormatted":370,"internal":371},1352,"Injectable cholesterol medication: using PCSK9 inhibitors","Not all patients reach their LDL targets with oral therapy. Learn when injectable cholesterol medication helps and how PCSK9 inhibitors work.",{"alt":356,"title":304,"size":357,"location":358},"Two PCSK9 inhibitor autoinjector pens—an injectable cholesterol medication—shown on a light blue background.",{"width":333,"height":333},{"bucket":309,"key":359},"\u002F2026-05\u002FC121(3)_magazine image.png",{"id":361,"title":362,"relativeURL":363,"image":364,"professionLong":365,"profession":366,"weight":275},1563,"Franz Wiesbauer, MD MPH","\u002Fteachers\u002Ffranz-wiesbauer-md-mph","https:\u002F\u002Fmedmastery-backend-prod-kjbeds.s3.eu-west-1.amazonaws.com\u002Fmedia\u002Fimages\u002F9c43cef0-41ee-4005-9e4a-d8711c816401","Franz is the founder and CEO of Medmastery. He is an internist with a specialization in cardiology and a master’s in public health from Johns Hopkins University.",{"name":367},"Internist","\u002Fmagazine\u002Fpcsk9-injectable-cholesterol-medication",279,"5m",{"created":372,"updated":373,"published":374},1779483663,1779495630,1779495631,{"seo":376,"og":379},{"title":377,"description":378},"Obtaining a Pediatric ECG Beyond the Standard 12-Lead ECG | Medmastery","Learn why pediatric ECGs use three additional leads beyond the standard 12-lead ECG and how a 15-lead ECG improves cardiac assessment in children.",{"title":377,"description":378,"image":380},{"alt":381,"title":304,"size":382,"location":384},"Infant undergoing ECG lead placement while a clinician prepares for pediatric ECG",{"width":307,"height":383},630,{"bucket":309,"key":385},"\u002F2026-06\u002FC141(1)_Open graph_1200x630.png",{"id":387,"created":388,"updated":389,"published":389},1355,1781900013,1781901055]