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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":283,"meta":356,"internal":366},{"title":212,"leadIn":213,"category":214,"elements":217,"becomeAnExpert":251,"author":273,"readDuration":281,"readDurationFormatted":282},"Pacemakers and 'slow' AF patients.","Learn about pacemaker use in cases of 'slow' atrial fibrillation (AF).",{"id":215,"name":216},1,"Course previews",[218,229,234,239,246],{"type":219,"data":220},"video",{"readDurationInSeconds":221,"video":222},225,{"platform":223,"name":224,"url":225,"size":226},"YouTube","Pacemakers and \"slow\" AF patients","https:\u002F\u002Fwww.youtube.com\u002Fwatch?v=ctzc6cQgdm4",{"width":227,"height":228},200,113,{"type":230,"data":231},"free_text",{"readDurationInSeconds":232,"text":233},9.066666666666666,"\u003Cp>How are pacemakers used to treat 'slow' atrial fibrillation (AF)? In this video from our Pacemaker Essentials course, we'll take a look at why we use pacemakers for atrial fibrillation, what type of pacemaker is best to use, and what type of pacemaker is considered useless.\u003C\u002Fp>",{"type":230,"data":235},{"readDurationInSeconds":236,"title":237,"text":238},14.4,"Join our Pacemaker Essentials course today!","\u003Cp>Take the mystery out of pacemakers with our \u003Cstrong>\u003Ca href=\"https:\u002F\u002Fwww.medmastery.com\u002Fcourse\u002Fpacemaker-essentials\">Pacemaker Essentials course\u003C\u002Fa>\u003C\u002Fstrong>. Learn how pacemakers work, what can be done in order to optimize a patient’s pacemaker therapy, and how to recognize and troubleshoot common pacemaker problems. By the end of this course, you’ll feel comfortable addressing the most common pacemaker issues without having a pacemaker expert on hand! \u003C\u002Fp>",{"type":240,"data":241},"cta",{"readDurationInSeconds":242,"text":243,"buttonText":244,"buttonUrl":245},3.466666666666667,"Become a great clinician with our video courses and workshops","Start learning for free","https:\u002F\u002Fwww.medmastery.com\u002Fuser\u002Fregister",{"type":230,"data":247},{"readDurationInSeconds":248,"title":249,"text":250},85.86666666666666,"Video Transcript","\u003Cp dir=\"ltr\">\u003Cstrong>[00:00:00] \u003C\u002Fstrong>In this lesson, we will look at how pacemakers are often used to treat atrial fibrillation. Atrial fibrillation describes a condition where the normal contraction and electrical activity of the atria has been replaced by disorganized, chaotic electrical activity. The AV node is bombarded by this chaotic activity and it's not always certain on how to respond. This leads to a \u003C\u002Fp>\u003Cp dir=\"ltr\">\u003Cstrong>[00:00:30] \u003C\u002Fstrong>heart rate that is always irregular, sometimes slow, sometimes fast, and quite often played with pauses. When we talk about pacing, we're interested in slow atrial fibrillation, so atrial fibrillation that results in insignificant pauses between heartbeats. Let's have a look at what pacemakers we have on offer to treat this patient’s symptoms. Single-chamber pacemaker with an atrial lead, well, \u003C\u002Fp>\u003Cp dir=\"ltr\">\u003Cstrong>[00:01:00]\u003C\u002Fstrong> this is because any electrical signal sent down the pacing lead to try and stimulate a contraction will just be met by that chaotic electrical activity. It is impossible to pace the atria during atrial fibrillation. So, even though the AV node might be healthy, we cannot get a good signal into the atria. So, in permanent atrial fibrillation, the pacemaker of choice is a \u003C\u002Fp>\u003Cp dir=\"ltr\">\u003Cstrong>[00:01:30]\u003C\u002Fstrong> single-chamber pacemaker with a ventricular lead. Let's have a look at how this might work. Here we have QRS complexes reasonably close together and the pacemaker can see that the heart is beating. Now, all of a sudden, a significant pause starts to recur. The pacemaker recognizes this, delivers an output post into the ventricles and creates this broader \u003C\u002Fp>\u003Cp dir=\"ltr\">\u003Cstrong>[00:02:00] \u003C\u002Fstrong>pacing complex. This will alleviate any symptoms the patient is having as a result of significantly slow heart rate or significant pauses. We don't need an atrial lead because we know this person's in atrial fibrillation and all this information is garbage, it's of no use to us. So, that's why in permanent atrial fibrillation, we don't need an atrial lead. It is worth noting that in paroxysmal atrial fibrillation, \u003C\u002Fp>\u003Cp dir=\"ltr\">\u003Cstrong>[00:02:30] \u003C\u002Fstrong>it's the intermittent AF, a dual-chamber pacemaker is a good pacemaker of choice. This is for two reasons. Firstly, the atrial lead is able to receive signals from the atria, so it can tell the pacemaker when the atria have started to fibrillate, when AF is occurring. And at the same time, during sinus rhythm, the atrial lead is able to use that information from the atria \u003C\u002Fp>\u003Cp dir=\"ltr\">\u003Cstrong>[00:03:00] \u003C\u002Fstrong>and if necessary, create good correlation between atrial contractions and ventricular contractions. So, your takeaway message, in chronic atrial fibrillation, a single-chamber ventricular pacemaker is the weapon of choice. Information from the atria is worthless.\u003C\u002Fp>",{"courses":252,"showAwardsBelow":48},[253],{"id":254,"isFreeCmeCourse":255,"title":256,"type":257,"specialization":258,"teachers":260,"cmeCredits":262,"teacherIllustration":263,"backgroundImage":264,"relativeUrl":265,"lastChanged":266,"created":267,"description":268,"relativeURL":265,"meta":269},2176,false,"Pacemaker Essentials","course",[259],"Cardiology",[261],"Kristian Webb",5,"https:\u002F\u002Fmedmastery-backend-prod-kjbeds.s3.eu-west-1.amazonaws.com\u002Fmedia\u002Fimages\u002F99f55e6b-af25-4eb8-9d82-e2d14ce90eca","https:\u002F\u002Fmedmastery-backend-prod-kjbeds.s3.eu-west-1.amazonaws.com\u002Fmedia\u002Fimages\u002F99f55e6c-8db5-4a40-8e74-aed3c99bae3f","\u002Fcourses\u002Fpacemaker-essentials","1763556346","1442566649","This hands-on course takes the mystery out of pacemakers and gives clinicians a solid grounding in pacemaker therapy. 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Author and cardiology education enthusiast.","\u002Fteachers\u002Fkristian-webb",[259],116,"2m",[284,312,331],{"id":285,"title":286,"text":287,"image":288,"author":296,"path":305,"readDuration":306,"readDurationFormatted":307,"internal":308},1350,"How to Recognize INOCA (ANOCA) on an Exercise Stress Test ","Angina, abnormal stress test, clean coronaries—that's INOCA (or ANOCA), and it carries real risk. Learn to recognize and report it with exercise stress ECG.",{"alt":289,"title":290,"size":291,"location":293},"Illustration of the heart's coronary vasculature showing large coronary arteries and the extensive network of smaller vessels affected in INOCA (ischemia with nonobstructive coronary arteries).","",{"width":292,"height":292},1200,{"bucket":294,"key":295},"public-drupal-medmastery-assets-production","\u002F2026-05\u002FC17(1)_magazine image_0.png",{"id":297,"title":298,"relativeURL":299,"image":300,"professionLong":301,"profession":302,"weight":304},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":303},"Internist",4,"\u002Fmagazine\u002Fexercise-stress-ecg-inoca",141,"3m",{"created":309,"updated":310,"published":311},1778115738,1778118425,1778118255,{"id":313,"title":314,"text":315,"image":316,"author":322,"path":324,"readDuration":325,"readDurationFormatted":326,"internal":327},1348,"Hyperlipidemia screening: who, when, & what to measure","Testing for hyperlipidemia can help you mitigate your patients' cardiovascular risk. Learn who to screen and when, which measures to request, and how to stratify risk.",{"alt":317,"title":290,"size":318,"location":320},"Lipid panel blood sample tubes used to test for hyperlipidemia in a laboratory setting",{"width":319,"height":319},600,{"bucket":294,"key":321},"\u002F2026-04\u002FC121_magazine image.png",{"id":297,"title":298,"relativeURL":299,"image":300,"professionLong":301,"profession":323,"weight":304},{"name":303},"\u002Fmagazine\u002Ftest-for-hyperlipidemia",246,"5m",{"created":328,"updated":329,"published":330},1777403036,1777572381,1777412421,{"id":332,"title":333,"text":334,"image":335,"author":340,"path":349,"readDuration":350,"readDurationFormatted":351,"internal":352},1347,"Outpatient care for COPD exacerbations","Most acute COPD exacerbations can be managed with outpatient treatment. Learn how to treat mild and moderate COPD exacerbations—and when to escalate care.",{"alt":336,"title":290,"size":337,"location":338},"Older patient using a handheld nebulizer to inhale bronchodilator medication during an acute COPD exacerbation",{"width":319,"height":319},{"bucket":294,"key":339},"\u002F2026-04\u002FC133(4)_ exacerbations_magazine image.png",{"id":341,"title":342,"relativeURL":343,"image":344,"professionLong":345,"profession":346,"weight":348},5365,"Siamak Moayedi, MD","\u002Fteachers\u002Fsiamak-moayedi-md","https:\u002F\u002Fmedmastery-backend-prod-kjbeds.s3.eu-west-1.amazonaws.com\u002Fmedia\u002Fimages\u002F9c43cf02-1064-4074-817b-0eb5de6ded74","Professor and Director of Medical Student Education, University of Maryland and Course Director, Essential and Critical Procedures, Emergency Medicine.",{"name":347},"Emergency medicine physician",1533,"\u002Fmagazine\u002Facute-copd-exacerbation-treatment",191,"4m",{"created":353,"updated":354,"published":355},1776705362,1776710540,1776710541,{"seo":357,"og":359},{"title":358,"description":213},"Pacemakers and 'slow' AF patients. | Medmastery",{"title":358,"description":213,"image":360},{"alt":290,"title":290,"size":361,"location":364},{"width":362,"height":363},599,347,{"bucket":294,"key":365},"\u002Fmigrated-images\u002FScreen Shot 2018-04-30 at 1.15.23 pm.png",{"id":367,"created":368,"updated":369,"published":368},216,1526991541,1655189586]