{"id":18348,"date":"2026-03-02T13:20:03","date_gmt":"2026-03-02T13:20:03","guid":{"rendered":"https:\/\/blog.fourthfrontier.com\/uk\/?p=18348"},"modified":"2026-03-02T13:20:31","modified_gmt":"2026-03-02T13:20:31","slug":"how-heart-block-differs-from-afib-and-bradycardia","status":"publish","type":"post","link":"https:\/\/blog.fourthfrontier.com\/uk\/how-heart-block-differs-from-afib-and-bradycardia\/","title":{"rendered":"How Heart Block Differs from AFib and Bradycardia"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">When you are told something is off with your heart rhythm, the terms can sound confusing. Heart block, AFib, Bradycardia! They all involve how your heart beats, but they are not the same thing. Understanding the difference matters because each condition affects your heart in a unique way and requires a different clinical approach.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">If you are tracking heart health, noticing symptoms, or wearing a heart monitor, knowing how heart block differs from atrial fibrillation and bradycardia helps you ask better questions and act sooner.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Let us break it down in a way that makes sense.<\/span><\/p>\n<h2><b>How Your Heart&#8217;s Electrical System Works<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Your heart beats because of electrical signals that travel through a precise pathway. The signal starts in the sinus node, moves through the atria, passes the atrioventricular node, and then travels down into the ventricles.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Any problem with signal generation or signal transmission can lead to a heart rhythm issue. Heart block, AFib, and bradycardia each disrupt this system in different ways.<\/span><\/p>\n<h2><b>What Is Heart Block<\/b><\/h2>\n<p><a href=\"https:\/\/my.clevelandclinic.org\/health\/diseases\/17056-heart-block\"><span style=\"font-weight: 400;\">Heart block <\/span><\/a><span style=\"font-weight: 400;\">happens when electrical signals slow down or fail to pass properly from the atria to the ventricles. It is not a blocked artery. It is a conduction problem.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Heart block is classified by degree.<\/span><\/p>\n<ul>\n<li aria-level=\"1\">\n<h3><b>First Degree Heart Block<\/b><b><br \/>\n<\/b><span style=\"font-weight: 400;\">The signal gets through, but more slowly than normal. Many people have no symptoms and may not need treatment.<\/span><\/h3>\n<\/li>\n<\/ul>\n<ul>\n<li aria-level=\"1\">\n<h3><b>Second Degree Heart Block<\/b><b><br \/>\n<\/b><span style=\"font-weight: 400;\">Some signals get through, and others do not. This can cause skipped beats, dizziness, or fatigue.<\/span><\/h3>\n<\/li>\n<\/ul>\n<ul>\n<li aria-level=\"1\">\n<h3><b>Third Degree Heart Block<\/b><b><br \/>\n<\/b><span style=\"font-weight: 400;\">No signals get through from the atria to the ventricles. The ventricles beat on their own at a much slower rate. This is serious and often requires a pacemaker.<\/span><\/h3>\n<\/li>\n<\/ul>\n<p><a href=\"https:\/\/www.nhs.uk\/conditions\/heart-block\/\"><span style=\"font-weight: 400;\">Heart block is often discovered during EKG monitoring, especially when symptoms come and go.<\/span><\/a><\/p>\n<h2><b>What Is Atrial Fibrillation (AFib)<\/b><\/h2>\n<p><a href=\"https:\/\/blog.fourthfrontier.com\/monitoring-asymptomatic-atrial-fibrillation-with-the-frontier-x-plus\/\"><span style=\"font-weight: 400;\">Atrial fibrillation<\/span><\/a><span style=\"font-weight: 400;\"> is a rhythm disorder where the atria beat rapidly and irregularly. Instead of a coordinated signal, the atria fire chaotically.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">This leads to:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Irregular heartbeat<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Fast or slow heart rate<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Poor blood flow from the atria<\/span><\/li>\n<\/ul>\n<p><a href=\"https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC5153082\/\"><span style=\"font-weight: 400;\">AFib increases the risk of stroke and heart failure if not managed properly. <\/span><\/a><span style=\"font-weight: 400;\">Unlike heart block, the issue in AFib is not signal delay but signal chaos.<\/span><\/p>\n<p><a href=\"https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC9683599\/\"><span style=\"font-weight: 400;\">AFib can be constant or intermittent, which is why longer-term rhythm monitoring is often helpful for clinical evaluation.<\/span><\/a><\/p>\n<h2><b>What Is Bradycardia<\/b><\/h2>\n<p><a href=\"https:\/\/blog.fourthfrontier.com\/understanding-tachycardia-and-bradycardia-what-your-heart-rate-is-telling-you\/\"><span style=\"font-weight: 400;\">Bradycardia<\/span><\/a><span style=\"font-weight: 400;\"> simply means a slow heart rate, usually below sixty beats per minute. It is not always dangerous.<\/span><\/p>\n<p><a href=\"https:\/\/blog.fourthfrontier.com\/bradycardia-explained-athletic-vs-concerning-slow-heart-rates\/\"><span style=\"font-weight: 400;\">Athletes often have a low resting heart rate.<\/span><\/a><span style=\"font-weight: 400;\"> However, bradycardia becomes a concern when it causes symptoms or reflects an underlying electrical issue.<\/span><\/p>\n<p><a href=\"https:\/\/www.heart.org\/en\/health-topics\/arrhythmia\/about-arrhythmia\/bradycardia--slow-heart-rate\"><span style=\"font-weight: 400;\">Bradycardia can result from:<\/span><\/a><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Sinus node dysfunction<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Heart block<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Medication effects<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Aging of the conduction system<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">In other words, bradycardia can be a symptom rather than a diagnosis on its own.<\/span><\/p>\n<h2><b>Key Differences Between Heart Block, AFib, and Bradycardia<\/b><\/h2>\n<table>\n<tbody>\n<tr>\n<td><b>Feature<\/b><\/td>\n<td><a href=\"https:\/\/www.ncbi.nlm.nih.gov\/books\/NBK459147\/\"><b>Heart Block<\/b><\/a><\/td>\n<td><b>Atrial Fibrillation (AFib)<\/b><\/td>\n<td><b>Bradycardia<\/b><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Basic Definition<\/span><\/td>\n<td><span style=\"font-weight: 400;\">A conduction delay or failure between the heart\u2019s chambers<\/span><\/td>\n<td><span style=\"font-weight: 400;\">An irregular heart rhythm originating in the atria<\/span><\/td>\n<td><span style=\"font-weight: 400;\">A slow heart rate that may have multiple causes<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Primary Electrical Issue<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Affects signal transmission between atria and ventricles<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Affects signal organization in the atria<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Affects signal frequency (rate of heartbeat)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Effect on Heart Rhythm<\/span><\/td>\n<td><span style=\"font-weight: 400;\">May cause pauses or dropped beats<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Causes irregular, unpredictable beats<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Causes consistently slow beats<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Rhythm Pattern<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Can be regular but with intermittent dropped signals<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Irregularly irregular rhythm<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Regular or irregular but slow rhythm<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Main Location of Issue<\/span><\/td>\n<td><span style=\"font-weight: 400;\">AV node or conduction pathways between chambers<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Atria (upper chambers of the heart)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Sinus node or conduction system<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Typical Heart Rate Impact<\/span><\/td>\n<td><span style=\"font-weight: 400;\">May be normal or slow depending on severity<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Often fast and irregular, but can vary<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Typically below 60 beats per minute<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<h2><b>Symptoms You Might Notice<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Symptoms can overlap, which makes monitoring important.<\/span><\/p>\n<p><a href=\"https:\/\/my.clevelandclinic.org\/health\/diseases\/17056-heart-block\"><span style=\"font-weight: 400;\">Heart block symptoms may include:<\/span><\/a><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u00a0Dizziness<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u00a0Fainting<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u00a0Fatigue<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u00a0Shortness of breath<\/span><\/li>\n<\/ul>\n<p><a href=\"https:\/\/blog.fourthfrontier.com\/monitoring-asymptomatic-atrial-fibrillation-with-the-frontier-x-plus\/\"><span style=\"font-weight: 400;\">AFib symptoms<\/span><\/a><span style=\"font-weight: 400;\"> often include:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u00a0Palpitations<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u00a0Irregular pulse<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u00a0Exercise intolerance<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u00a0Chest discomfort<\/span><\/li>\n<\/ul>\n<p><a href=\"https:\/\/blog.fourthfrontier.com\/understanding-tachycardia-and-bradycardia-what-your-heart-rate-is-telling-you\/\"><span style=\"font-weight: 400;\">Bradycardia<\/span><\/a><span style=\"font-weight: 400;\"> symptoms may include:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u00a0Lightheadedness<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u00a0Weakness<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u00a0Confusion<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u00a0Fatigue<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Some people have no symptoms at all. That is where rhythm monitoring becomes valuable.<\/span><\/p>\n<h2><b>Why These Conditions Are Sometimes Missed<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Many rhythm issues are intermittent. A short clinic EKG may look normal even if symptoms occur later. Heart block can appear only during sleep or exertion. AFib can come and go. Bradycardia may worsen at night. This is why longer-term heart rhythm data helps clinicians see patterns rather than snapshots.<\/span><\/p>\n<h2><b>The Role of Long-Term Heart Rhythm Monitoring<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Heart rhythm conditions are best understood over time. Trends matter more than single readings.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Long-term EKG recording allows clinicians to:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Correlate symptoms with rhythm changes<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Identify pauses or conduction delays<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Observe nighttime and exertional changes<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Differentiate between rhythm disorders<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">This data supports clinical interpretation and informed decision-making.<\/span><\/p>\n<h2><b>How Long-Term ECG Monitoring Supports Heart Health Awareness<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">The<\/span><a href=\"https:\/\/fourthfrontier.com\/products\/frontier-x-plus?geo=false\"><span style=\"font-weight: 400;\"> Frontier X Plus<\/span><\/a><span style=\"font-weight: 400;\"> is a prescription medical-grade, US FDA 510(k) cleared, long-term ambulatory EKG monitor. It is worn on the chest and records single-channel EKG data over extended periods while you go about your daily life. Physicians can use this data to interpret heart rhythm trends in patients with suspected conduction or rhythm abnormalities.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The <\/span><a href=\"https:\/\/fourthfrontier.com\/products\/frontier-x?geo=false\"><span style=\"font-weight: 400;\">Frontier X2 <\/span><\/a><span style=\"font-weight: 400;\">is a wellness-grade device that records EKG and heart rate for fitness and wellbeing tracking. It provides insight into heart rate patterns, heart rate variability (HRV), and exertional response. While it does not diagnose conditions, it can help you notice changes that are worth discussing with a clinician.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Together, these tools help bridge the gap between occasional testing and real-world rhythm behaviour.<\/span><\/p>\n<h2><b>How These Conditions Are Managed<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Treatment depends entirely on the condition and severity.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Heart block may require:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Observation<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Medication review<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/www.ncbi.nlm.nih.gov\/books\/NBK459147\/\"><span style=\"font-weight: 400;\">Pacemaker implantation<\/span><\/a><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">AFib management may include:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Rate or rhythm control strategies<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Blood thinners<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Lifestyle changes<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Bradycardia management depends on the cause and symptoms. Some cases need no treatment. Others may require pacing support.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Only a clinician can determine the appropriate approach based on rhythm data, symptoms, and overall heart health.<\/span><\/p>\n<h2><b>When You Should Seek Medical Attention<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Seek medical care if you notice:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Unexplained fainting<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Sudden fatigue or weakness<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Irregular or very slow heartbeat<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Shortness of breath without explanation<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Early evaluation can prevent complications and guide proper care.<\/span><\/p>\n<h2><b>Final Thoughts<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Heart block, AFib, and bradycardia are often grouped together, but they are very different conditions. Each affects the heart&#8217;s electrical system in its own way and carries different risks.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">When you understand how these rhythm issues differ, you are better equipped to track symptoms, ask informed questions, and engage actively in your heart care.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Heart rhythm health is not about fear. It is about awareness patterns and timely action.<\/span><\/p>\n<h2><b>FAQs<\/b><\/h2>\n<h3><b>What is the main difference between heart block and AFib?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Heart block is a problem with signal transmission, while AFib is a problem with signal organization in the atria.<\/span><\/p>\n<h3><b>Can bradycardia be caused by heart block?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Yes. Certain types of heart block can lead to slow heart rates.<\/span><\/p>\n<h3><b>Is AFib the same as an irregular heartbeat?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">AFib is one of the most common causes of an irregular heartbeat, but not the only one.<\/span><\/p>\n<h3><b>How is heart block diagnosed?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Heart block is diagnosed through EKG evaluation, often using longer-term monitoring to capture intermittent conduction issues.<\/span><\/p>\n<h3><b>Can long-term EKG monitoring help differentiate rhythm disorders?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Yes. Long-term EKG data helps clinicians distinguish between heart block, AFib, and bradycardia by observing rhythm patterns over time.<\/span><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>When you are told something is off with your heart rhythm, the terms can sound confusing. Heart block, AFib, Bradycardia! They all involve how your heart beats, but they are not the same thing. Understanding the difference matters because each [&hellip;]<\/p>\n","protected":false},"author":17,"featured_media":18350,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[195,196],"tags":[203,409,210,412,513,713,710,712,413,401,578,711],"class_list":["post-18348","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-heart-health","category-heart-rate","tag-afib","tag-arrhythmia","tag-bradycardia","tag-cardiacmonitoring","tag-ecgmonitoring","tag-heartawareness","tag-heartblock","tag-heartconduction","tag-hearthealth","tag-heartrhythm","tag-irregularheartbeat","tag-slowheartrate"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v19.6 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Heart Block vs AFib vs Bradycardia: Key Differences Explained<\/title>\n<meta name=\"description\" content=\"Learn the difference between heart block, AFib, and bradycardia, their symptoms, causes, and how EKG monitoring helps identify them\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blog.fourthfrontier.com\/uk\/how-heart-block-differs-from-afib-and-bradycardia\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How Heart Block Differs from AFib and Bradycardia\" \/>\n<meta property=\"og:description\" content=\"Learn the difference between heart block, AFib, and bradycardia, their symptoms, causes, and how EKG monitoring helps identify them\" \/>\n<meta property=\"og:url\" content=\"https:\/\/blog.fourthfrontier.com\/uk\/how-heart-block-differs-from-afib-and-bradycardia\/\" \/>\n<meta property=\"og:site_name\" content=\"Heart Health Guides | Research Blogs on Heart Diseases | UK Fourth Frontier Blogs\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/fourthfrontier\/\" \/>\n<meta property=\"article:published_time\" content=\"2026-03-02T13:20:03+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-02T13:20:31+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/blog.fourthfrontier.com\/uk\/wp-content\/uploads\/2026\/03\/How-Heart-Block-Differs-from-AFib-and-Bradycardia.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"847\" \/>\n\t<meta property=\"og:image:height\" content=\"476\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Fourth Frontier\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@FourthFrontier\" \/>\n<meta name=\"twitter:site\" content=\"@FourthFrontier\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Fourth Frontier\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/blog.fourthfrontier.com\\\/uk\\\/how-heart-block-differs-from-afib-and-bradycardia\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/blog.fourthfrontier.com\\\/uk\\\/how-heart-block-differs-from-afib-and-bradycardia\\\/\"},\"author\":{\"name\":\"Fourth Frontier\",\"@id\":\"https:\\\/\\\/blog.fourthfrontier.com\\\/#\\\/schema\\\/person\\\/6501b2680c8acdd1ed1ab4123409ff18\"},\"headline\":\"How Heart Block Differs from AFib and Bradycardia\",\"datePublished\":\"2026-03-02T13:20:03+00:00\",\"dateModified\":\"2026-03-02T13:20:31+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/blog.fourthfrontier.com\\\/uk\\\/how-heart-block-differs-from-afib-and-bradycardia\\\/\"},\"wordCount\":1211,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/blog.fourthfrontier.com\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/blog.fourthfrontier.com\\\/uk\\\/how-heart-block-differs-from-afib-and-bradycardia\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/blog.fourthfrontier.com\\\/uk\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/How-Heart-Block-Differs-from-AFib-and-Bradycardia.jpg\",\"keywords\":[\"afib\",\"Arrhythmia\",\"Bradycardia\",\"CardiacMonitoring\",\"ECGMonitoring\",\"HeartAwareness\",\"HeartBlock\",\"HeartConduction\",\"HeartHealth\",\"HeartRhythm\",\"IrregularHeartbeat\",\"SlowHeartRate\"],\"articleSection\":[\"Heart Health\",\"Heart Rate\"],\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/blog.fourthfrontier.com\\\/uk\\\/how-heart-block-differs-from-afib-and-bradycardia\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/blog.fourthfrontier.com\\\/uk\\\/how-heart-block-differs-from-afib-and-bradycardia\\\/\",\"url\":\"https:\\\/\\\/blog.fourthfrontier.com\\\/uk\\\/how-heart-block-differs-from-afib-and-bradycardia\\\/\",\"name\":\"Heart Block vs AFib vs Bradycardia: Key Differences Explained\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/blog.fourthfrontier.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/blog.fourthfrontier.com\\\/uk\\\/how-heart-block-differs-from-afib-and-bradycardia\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/blog.fourthfrontier.com\\\/uk\\\/how-heart-block-differs-from-afib-and-bradycardia\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/blog.fourthfrontier.com\\\/uk\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/How-Heart-Block-Differs-from-AFib-and-Bradycardia.jpg\",\"datePublished\":\"2026-03-02T13:20:03+00:00\",\"dateModified\":\"2026-03-02T13:20:31+00:00\",\"description\":\"Learn the difference between heart block, AFib, and bradycardia, their symptoms, causes, and how EKG monitoring helps identify them\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/blog.fourthfrontier.com\\\/uk\\\/how-heart-block-differs-from-afib-and-bradycardia\\\/#breadcrumb\"},\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/blog.fourthfrontier.com\\\/uk\\\/how-heart-block-differs-from-afib-and-bradycardia\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\\\/\\\/blog.fourthfrontier.com\\\/uk\\\/how-heart-block-differs-from-afib-and-bradycardia\\\/#primaryimage\",\"url\":\"https:\\\/\\\/blog.fourthfrontier.com\\\/uk\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/How-Heart-Block-Differs-from-AFib-and-Bradycardia.jpg\",\"contentUrl\":\"https:\\\/\\\/blog.fourthfrontier.com\\\/uk\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/How-Heart-Block-Differs-from-AFib-and-Bradycardia.jpg\",\"width\":847,\"height\":476},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/blog.fourthfrontier.com\\\/uk\\\/how-heart-block-differs-from-afib-and-bradycardia\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/blog.fourthfrontier.com\\\/uk\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Heart Health\",\"item\":\"https:\\\/\\\/blog.fourthfrontier.com\\\/uk\\\/category\\\/heart-health\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"How Heart Block Differs from AFib and Bradycardia\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/blog.fourthfrontier.com\\\/#website\",\"url\":\"https:\\\/\\\/blog.fourthfrontier.com\\\/\",\"name\":\"Heart Health Guides | Research Blogs on Heart Diseases | UK Fourth Frontier Blogs\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/blog.fourthfrontier.com\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/blog.fourthfrontier.com\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-GB\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/blog.fourthfrontier.com\\\/#organization\",\"name\":\"Heart Health Guides | Research Blogs on Heart Diseases | UK Fourth Frontier Blogs\",\"url\":\"https:\\\/\\\/blog.fourthfrontier.com\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\\\/\\\/blog.fourthfrontier.com\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/i0.wp.com\\\/blog.fourthfrontier.com\\\/uk\\\/wp-content\\\/uploads\\\/2022\\\/11\\\/logo_png_360x.png?fit=360%2C37&ssl=1\",\"contentUrl\":\"https:\\\/\\\/i0.wp.com\\\/blog.fourthfrontier.com\\\/uk\\\/wp-content\\\/uploads\\\/2022\\\/11\\\/logo_png_360x.png?fit=360%2C37&ssl=1\",\"width\":360,\"height\":37,\"caption\":\"Heart Health Guides | Research Blogs on Heart Diseases | UK Fourth Frontier Blogs\"},\"image\":{\"@id\":\"https:\\\/\\\/blog.fourthfrontier.com\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/fourthfrontier\\\/\",\"https:\\\/\\\/x.com\\\/FourthFrontier\",\"https:\\\/\\\/in.linkedin.com\\\/company\\\/fourth-frontier\",\"https:\\\/\\\/www.instagram.com\\\/fourth_frontier\\\/\",\"https:\\\/\\\/www.youtube.com\\\/channel\\\/UCzM-g0oXEoZF15fTMjzVZ4g\"]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/blog.fourthfrontier.com\\\/#\\\/schema\\\/person\\\/6501b2680c8acdd1ed1ab4123409ff18\",\"name\":\"Fourth Frontier\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/e23c8dc29fe236745e1a838344eb020750d1d2609c89961d54583d89988f29d4?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/e23c8dc29fe236745e1a838344eb020750d1d2609c89961d54583d89988f29d4?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/e23c8dc29fe236745e1a838344eb020750d1d2609c89961d54583d89988f29d4?s=96&d=mm&r=g\",\"caption\":\"Fourth Frontier\"},\"url\":\"https:\\\/\\\/blog.fourthfrontier.com\\\/uk\\\/author\\\/fourthfrontier\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Heart Block vs AFib vs Bradycardia: Key Differences Explained","description":"Learn the difference between heart block, AFib, and bradycardia, their symptoms, causes, and how EKG monitoring helps identify them","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/blog.fourthfrontier.com\/uk\/how-heart-block-differs-from-afib-and-bradycardia\/","og_locale":"en_GB","og_type":"article","og_title":"How Heart Block Differs from AFib and Bradycardia","og_description":"Learn the difference between heart block, AFib, and bradycardia, their symptoms, causes, and how EKG monitoring helps identify them","og_url":"https:\/\/blog.fourthfrontier.com\/uk\/how-heart-block-differs-from-afib-and-bradycardia\/","og_site_name":"Heart Health Guides | Research Blogs on Heart Diseases | UK Fourth Frontier Blogs","article_publisher":"https:\/\/www.facebook.com\/fourthfrontier\/","article_published_time":"2026-03-02T13:20:03+00:00","article_modified_time":"2026-03-02T13:20:31+00:00","og_image":[{"width":847,"height":476,"url":"https:\/\/blog.fourthfrontier.com\/uk\/wp-content\/uploads\/2026\/03\/How-Heart-Block-Differs-from-AFib-and-Bradycardia.jpg","type":"image\/jpeg"}],"author":"Fourth Frontier","twitter_card":"summary_large_image","twitter_creator":"@FourthFrontier","twitter_site":"@FourthFrontier","twitter_misc":{"Written by":"Fourth Frontier","Estimated reading time":"6 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/blog.fourthfrontier.com\/uk\/how-heart-block-differs-from-afib-and-bradycardia\/#article","isPartOf":{"@id":"https:\/\/blog.fourthfrontier.com\/uk\/how-heart-block-differs-from-afib-and-bradycardia\/"},"author":{"name":"Fourth Frontier","@id":"https:\/\/blog.fourthfrontier.com\/#\/schema\/person\/6501b2680c8acdd1ed1ab4123409ff18"},"headline":"How Heart Block Differs from AFib and Bradycardia","datePublished":"2026-03-02T13:20:03+00:00","dateModified":"2026-03-02T13:20:31+00:00","mainEntityOfPage":{"@id":"https:\/\/blog.fourthfrontier.com\/uk\/how-heart-block-differs-from-afib-and-bradycardia\/"},"wordCount":1211,"commentCount":0,"publisher":{"@id":"https:\/\/blog.fourthfrontier.com\/#organization"},"image":{"@id":"https:\/\/blog.fourthfrontier.com\/uk\/how-heart-block-differs-from-afib-and-bradycardia\/#primaryimage"},"thumbnailUrl":"https:\/\/blog.fourthfrontier.com\/uk\/wp-content\/uploads\/2026\/03\/How-Heart-Block-Differs-from-AFib-and-Bradycardia.jpg","keywords":["afib","Arrhythmia","Bradycardia","CardiacMonitoring","ECGMonitoring","HeartAwareness","HeartBlock","HeartConduction","HeartHealth","HeartRhythm","IrregularHeartbeat","SlowHeartRate"],"articleSection":["Heart Health","Heart Rate"],"inLanguage":"en-GB","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/blog.fourthfrontier.com\/uk\/how-heart-block-differs-from-afib-and-bradycardia\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/blog.fourthfrontier.com\/uk\/how-heart-block-differs-from-afib-and-bradycardia\/","url":"https:\/\/blog.fourthfrontier.com\/uk\/how-heart-block-differs-from-afib-and-bradycardia\/","name":"Heart Block vs AFib vs Bradycardia: Key Differences Explained","isPartOf":{"@id":"https:\/\/blog.fourthfrontier.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/blog.fourthfrontier.com\/uk\/how-heart-block-differs-from-afib-and-bradycardia\/#primaryimage"},"image":{"@id":"https:\/\/blog.fourthfrontier.com\/uk\/how-heart-block-differs-from-afib-and-bradycardia\/#primaryimage"},"thumbnailUrl":"https:\/\/blog.fourthfrontier.com\/uk\/wp-content\/uploads\/2026\/03\/How-Heart-Block-Differs-from-AFib-and-Bradycardia.jpg","datePublished":"2026-03-02T13:20:03+00:00","dateModified":"2026-03-02T13:20:31+00:00","description":"Learn the difference between heart block, AFib, and bradycardia, their symptoms, causes, and how EKG monitoring helps identify them","breadcrumb":{"@id":"https:\/\/blog.fourthfrontier.com\/uk\/how-heart-block-differs-from-afib-and-bradycardia\/#breadcrumb"},"inLanguage":"en-GB","potentialAction":[{"@type":"ReadAction","target":["https:\/\/blog.fourthfrontier.com\/uk\/how-heart-block-differs-from-afib-and-bradycardia\/"]}]},{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:\/\/blog.fourthfrontier.com\/uk\/how-heart-block-differs-from-afib-and-bradycardia\/#primaryimage","url":"https:\/\/blog.fourthfrontier.com\/uk\/wp-content\/uploads\/2026\/03\/How-Heart-Block-Differs-from-AFib-and-Bradycardia.jpg","contentUrl":"https:\/\/blog.fourthfrontier.com\/uk\/wp-content\/uploads\/2026\/03\/How-Heart-Block-Differs-from-AFib-and-Bradycardia.jpg","width":847,"height":476},{"@type":"BreadcrumbList","@id":"https:\/\/blog.fourthfrontier.com\/uk\/how-heart-block-differs-from-afib-and-bradycardia\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/blog.fourthfrontier.com\/uk\/"},{"@type":"ListItem","position":2,"name":"Heart Health","item":"https:\/\/blog.fourthfrontier.com\/uk\/category\/heart-health\/"},{"@type":"ListItem","position":3,"name":"How Heart Block Differs from AFib and Bradycardia"}]},{"@type":"WebSite","@id":"https:\/\/blog.fourthfrontier.com\/#website","url":"https:\/\/blog.fourthfrontier.com\/","name":"Heart Health Guides | Research Blogs on Heart Diseases | UK Fourth Frontier Blogs","description":"","publisher":{"@id":"https:\/\/blog.fourthfrontier.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/blog.fourthfrontier.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-GB"},{"@type":"Organization","@id":"https:\/\/blog.fourthfrontier.com\/#organization","name":"Heart Health Guides | Research Blogs on Heart Diseases | UK Fourth Frontier Blogs","url":"https:\/\/blog.fourthfrontier.com\/","logo":{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:\/\/blog.fourthfrontier.com\/#\/schema\/logo\/image\/","url":"https:\/\/i0.wp.com\/blog.fourthfrontier.com\/uk\/wp-content\/uploads\/2022\/11\/logo_png_360x.png?fit=360%2C37&ssl=1","contentUrl":"https:\/\/i0.wp.com\/blog.fourthfrontier.com\/uk\/wp-content\/uploads\/2022\/11\/logo_png_360x.png?fit=360%2C37&ssl=1","width":360,"height":37,"caption":"Heart Health Guides | Research Blogs on Heart Diseases | UK Fourth Frontier Blogs"},"image":{"@id":"https:\/\/blog.fourthfrontier.com\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/fourthfrontier\/","https:\/\/x.com\/FourthFrontier","https:\/\/in.linkedin.com\/company\/fourth-frontier","https:\/\/www.instagram.com\/fourth_frontier\/","https:\/\/www.youtube.com\/channel\/UCzM-g0oXEoZF15fTMjzVZ4g"]},{"@type":"Person","@id":"https:\/\/blog.fourthfrontier.com\/#\/schema\/person\/6501b2680c8acdd1ed1ab4123409ff18","name":"Fourth Frontier","image":{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:\/\/secure.gravatar.com\/avatar\/e23c8dc29fe236745e1a838344eb020750d1d2609c89961d54583d89988f29d4?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/e23c8dc29fe236745e1a838344eb020750d1d2609c89961d54583d89988f29d4?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/e23c8dc29fe236745e1a838344eb020750d1d2609c89961d54583d89988f29d4?s=96&d=mm&r=g","caption":"Fourth Frontier"},"url":"https:\/\/blog.fourthfrontier.com\/uk\/author\/fourthfrontier\/"}]}},"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/blog.fourthfrontier.com\/uk\/wp-json\/wp\/v2\/posts\/18348","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.fourthfrontier.com\/uk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.fourthfrontier.com\/uk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.fourthfrontier.com\/uk\/wp-json\/wp\/v2\/users\/17"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.fourthfrontier.com\/uk\/wp-json\/wp\/v2\/comments?post=18348"}],"version-history":[{"count":1,"href":"https:\/\/blog.fourthfrontier.com\/uk\/wp-json\/wp\/v2\/posts\/18348\/revisions"}],"predecessor-version":[{"id":18351,"href":"https:\/\/blog.fourthfrontier.com\/uk\/wp-json\/wp\/v2\/posts\/18348\/revisions\/18351"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.fourthfrontier.com\/uk\/wp-json\/wp\/v2\/media\/18350"}],"wp:attachment":[{"href":"https:\/\/blog.fourthfrontier.com\/uk\/wp-json\/wp\/v2\/media?parent=18348"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.fourthfrontier.com\/uk\/wp-json\/wp\/v2\/categories?post=18348"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.fourthfrontier.com\/uk\/wp-json\/wp\/v2\/tags?post=18348"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}