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AF is usually compatible with life but carries long\u2011term thromboembolic risk, whereas VF is immediately fatal unless treated within minutes. This short note focuses only on exam\u2011relevant and bedside\u2011relevant facts. <a href=\"#test-yourself\">Jump to Test Yourself (MCQs)<\/a><\/p>\n <figure>\n<img decoding=\"async\" src=\"https:\/\/atsixty.com\/wp-content\/uploads\/2025\/12\/atrial_ventricular_fibrillation_ecg.png\" alt=\"Side\u2011by\u2011side ECG comparison of atrial fibrillation and ventricular fibrillation\" loading=\"lazy\" style=\"width:100%;height:auto\" \/>\n <figcaption>ECG comparison: atrial fibrillation (left) vs ventricular fibrillation (right).<\/figcaption>\n<\/figure>\n<h2>Atrial Fibrillation (AF)<\/h2>\n<ul>\n <li><strong>Definition:<\/strong> Chaotic atrial electrical activity causing loss of coordinated atrial contraction and an <strong>irregularly irregular<\/strong> ventricular rhythm.<\/li>\n <li><strong>Common causes:<\/strong> Hypertension, coronary artery disease, rheumatic mitral stenosis (classic), hyperthyroidism, alcohol (\"holiday heart\"), post\u2011cardiac surgery.<\/li>\n <li><strong>ECG hallmarks:<\/strong> Absence of P waves, presence of fibrillatory (f) waves, irregular RR intervals, usually narrow QRS.<\/li>\n <li><strong>Hemodynamic effect:<\/strong> Loss of atrial kick \u2192 reduced cardiac output, more significant in elderly and diastolic dysfunction.<\/li>\n <li><strong>Major complication:<\/strong> Thromboembolism, especially ischemic stroke due to clot formation in the left atrial appendage.<\/li>\n <li><strong>Management principles:<\/strong>\n <ul>\n <li>Rate control: \u03b2\u2011blockers, diltiazem, verapamil; digoxin preferred in heart failure.<\/li>\n <li>Rhythm control: amiodarone or electrical cardioversion in selected patients.<\/li>\n <li>Anticoagulation guided by <strong>CHA\u2082DS\u2082\u2011VASc<\/strong> score.<\/li>\n <li>Definitive option: catheter ablation (pulmonary vein isolation).<\/li>\n <\/ul>\n <\/li>\n<\/ul><h2>Ventricular Fibrillation (VF)<\/h2>\n<ul>\n <li><strong>Definition:<\/strong> Rapid, disorganized ventricular electrical activity resulting in <strong>no effective cardiac output<\/strong>.<\/li>\n <li><strong>Most common cause:<\/strong> Acute myocardial infarction.<\/li>\n <li><strong>Other causes:<\/strong> Hypoxia, acidosis, hypokalemia, hypomagnesemia, drug toxicity, cardiomyopathy.<\/li>\n <li><strong>ECG features:<\/strong> Completely chaotic waveform with no identifiable P waves, QRS complexes or T waves.<\/li>\n <li><strong>Clinical presentation:<\/strong> Sudden cardiac arrest \u2013 patient is pulseless and unconscious.<\/li>\n <li><strong>Management:<\/strong>\n <ul>\n <li><strong>Immediate defibrillation<\/strong> \u2013 single most important life\u2011saving step.<\/li>\n <li>High\u2011quality CPR.<\/li>\n <li>Epinephrine and amiodarone.<\/li>\n <li>Post\u2011ROSC: identify reversible causes and consider ICD for secondary prevention.<\/li>\n <\/ul>\n <\/li>\n<\/ul><h2>AF vs VF \u2013 Key Exam Differences<\/h2>\n<table border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse;width:100%\">\n <tr><th>Feature<\/th><th>Atrial Fibrillation<\/th><th>Ventricular Fibrillation<\/th><\/tr>\n <tr><td>Chamber involved<\/td><td>Atria<\/td><td>Ventricles<\/td><\/tr>\n <tr><td>Pulse<\/td><td>Present, irregular<\/td><td><strong>Absent<\/strong><\/td><\/tr>\n <tr><td>Immediate risk<\/td><td>Stroke<\/td><td><strong>Sudden death<\/strong><\/td><\/tr>\n <tr><td>ECG<\/td><td>No P waves, irregularly irregular<\/td><td>Chaotic baseline<\/td><\/tr>\n <tr><td>First\u2011line action<\/td><td>Rate control + anticoagulation<\/td><td><strong>Defibrillation<\/strong><\/td><\/tr>\n<\/table><h2>High\u2011Yield Clinical Pearls<\/h2>\n<ul>\n <li>AF is never an indication for emergency defibrillation unless associated with instability.<\/li>\n <li>VF should never be treated with drugs before attempting defibrillation.<\/li>\n <li>Always think of AF when the pulse is irregularly irregular.<\/li>\n<\/ul><p><strong>Take\u2011home message:<\/strong> AF is a chronic arrhythmia with thromboembolic implications; VF is an electrical catastrophe requiring instant shock. <em>Confusing the two in exams or emergencies can be fatal.<\/em><\/p><p style=\"font-size:0.9em;color:#555\">\u00a9 atsixty.com \u2013 concise medical notes for postgraduate entrance preparation.<\/p><\/article>\n<\/body>\n<\/html>\n\n\n\n<hr>\n\n<h2 id=\"test-yourself\">Test Yourself: Atrial vs Ventricular Fibrillation<\/h2>\n<p><em>Quick revision MCQs for NEET PG \/ INI-CET<\/em><\/p>\n\n <div id=\"avinquiz-container-1\">\n <div style=\"background:#f0f6fc;padding:15px;margin-bottom:20px;border-radius:5px;border-left:4px solid #2271b1;\">\n <h2 style=\"margin:0 0 5px;color:#2271b1;\">Atrial Fibrillation<\/h2>\n <p style=\"margin:0;color:#666;\">Questions: 10<\/p>\n <\/div>\n\n <form id=\"avinquiz-form-1\">\n <input type=\"hidden\" name=\"quiz_id\" value=\"1\">\n <input type=\"hidden\" name=\"quiz_name\" value=\"Atrial Fibrillation\">\n <input type=\"hidden\" name=\"start_time\" id=\"avinquiz-start-time\" value=\"\">\n <div style=\"background:#f9f9f9;padding:20px;margin-bottom:20px;border-radius:5px;border-left:4px solid #0073aa;\">\n <h3 style=\"margin-top:0;color:#0073aa;\">Question 1<\/h3>\n <div style=\"line-height:1.8;margin:15px 0;\">\n A chronic alcoholic develops a paroxysm of palpitations after alcohol binge. Which of the following Arrhythmia is most likely?<br \/>\r\n1. Ventricular fibrillation <br \/>\r\n2. Ventricular premature complex <br \/>\r\n3. Atrial flutter <br \/>\r\n4. Atrial fibrillation <\/div>\n <div style=\"margin-top:15px;\">\n <label style=\"font-weight:bold;\">\n Your Answer (0\u20135): <\/label>\n \n <input type=\"text\"\n name=\"answer_1\"\n id=\"mc_1\"\n data-type=\"multiple_choice\"\n maxlength=\"1\"\n inputmode=\"numeric\"\n style=\"width:60px;padding:10px;font-size:18px;margin-left:10px;border:2px solid #ddd;border-radius:4px;text-align:center;\"\n onkeypress=\"return \/[0-5]\/.test(event.key)\"\n oninput=\"this.value=this.value.replace(\/[^0-5]\/g,'').slice(0,1)\">\n <\/div>\n <\/div>\n <div style=\"background:#f9f9f9;padding:20px;margin-bottom:20px;border-radius:5px;border-left:4px solid #0073aa;\">\n <h3 style=\"margin-top:0;color:#0073aa;\">Question 2<\/h3>\n <div style=\"line-height:1.8;margin:15px 0;\">\n A 62-year-old man with chronic alcohol use develops atrial fibrillation after binge drinking. Which statement regarding management is MOST accurate?<br \/>\r\n1. Anticoagulation is unnecessary as the episode is self-limiting<br \/>\r\n2. Beta-blockers are contraindicated in alcohol-related AF<br \/>\r\n3. The arrhythmia typically resolves within 24 hours with abstinence<br \/>\r\n4. Cardioversion should be performed immediately in all cases <\/div>\n <div style=\"margin-top:15px;\">\n <label style=\"font-weight:bold;\">\n Your Answer (0\u20135): <\/label>\n \n <input type=\"text\"\n name=\"answer_3\"\n id=\"mc_3\"\n data-type=\"multiple_choice\"\n maxlength=\"1\"\n inputmode=\"numeric\"\n style=\"width:60px;padding:10px;font-size:18px;margin-left:10px;border:2px solid #ddd;border-radius:4px;text-align:center;\"\n onkeypress=\"return \/[0-5]\/.test(event.key)\"\n oninput=\"this.value=this.value.replace(\/[^0-5]\/g,'').slice(0,1)\">\n <\/div>\n <\/div>\n <div style=\"background:#f9f9f9;padding:20px;margin-bottom:20px;border-radius:5px;border-left:4px solid #0073aa;\">\n <h3 style=\"margin-top:0;color:#0073aa;\">Question 3<\/h3>\n <div style=\"line-height:1.8;margin:15px 0;\">\n A patient develops atrial fibrillation 24 hours after heavy alcohol consumption. His CHA\u2082DS\u2082-VASc score is 3. Which statement is correct?<br \/>\r\n1. Anticoagulation is not needed for paroxysmal AF<br \/>\r\n2. The stroke risk should be assessed even though the episode may be transient<br \/>\r\n3. Aspirin alone is sufficient for stroke prevention<br \/>\r\n4. Anticoagulation can be deferred until AF becomes permanent <\/div>\n <div style=\"margin-top:15px;\">\n <label style=\"font-weight:bold;\">\n Your Answer (0\u20135): <\/label>\n \n <input type=\"text\"\n name=\"answer_4\"\n id=\"mc_4\"\n data-type=\"multiple_choice\"\n maxlength=\"1\"\n inputmode=\"numeric\"\n style=\"width:60px;padding:10px;font-size:18px;margin-left:10px;border:2px solid #ddd;border-radius:4px;text-align:center;\"\n onkeypress=\"return \/[0-5]\/.test(event.key)\"\n oninput=\"this.value=this.value.replace(\/[^0-5]\/g,'').slice(0,1)\">\n <\/div>\n <\/div>\n <div style=\"background:#f9f9f9;padding:20px;margin-bottom:20px;border-radius:5px;border-left:4px solid #0073aa;\">\n <h3 style=\"margin-top:0;color:#0073aa;\">Question 4<\/h3>\n <div style=\"line-height:1.8;margin:15px 0;\">\n A chronic alcoholic with new-onset AF has the following: Age 72, diabetes, hypertension, prior stroke. What is his CHA\u2082DS\u2082-VASc score?<br \/>\r\n1. 3<br \/>\r\n2. 4<br \/>\r\n3. 5<br \/>\r\n4. 6 <\/div>\n <div style=\"margin-top:15px;\">\n <label style=\"font-weight:bold;\">\n Your Answer (0\u20135): <\/label>\n \n <input type=\"text\"\n name=\"answer_7\"\n id=\"mc_7\"\n data-type=\"multiple_choice\"\n maxlength=\"1\"\n inputmode=\"numeric\"\n style=\"width:60px;padding:10px;font-size:18px;margin-left:10px;border:2px solid #ddd;border-radius:4px;text-align:center;\"\n onkeypress=\"return \/[0-5]\/.test(event.key)\"\n oninput=\"this.value=this.value.replace(\/[^0-5]\/g,'').slice(0,1)\">\n <\/div>\n <\/div>\n <div style=\"background:#f9f9f9;padding:20px;margin-bottom:20px;border-radius:5px;border-left:4px solid #0073aa;\">\n <h3 style=\"margin-top:0;color:#0073aa;\">Question 5<\/h3>\n <div style=\"line-height:1.8;margin:15px 0;\">\n Which diagnostic test is LEAST useful in the initial workup of suspected Holiday Heart Syndrome?<br \/>\r\n1.\tElectrocardiogram<br \/>\r\n2.\tSerum electrolytes (K\u207a, Mg\u00b2\u207a, Ca\u00b2\u207a)<br \/>\r\n3.\tCardiac MRI<br \/>\r\n4.\tThyroid function tests <\/div>\n <div style=\"margin-top:15px;\">\n <label style=\"font-weight:bold;\">\n Your Answer (0\u20135): <\/label>\n \n <input type=\"text\"\n name=\"answer_9\"\n id=\"mc_9\"\n data-type=\"multiple_choice\"\n maxlength=\"1\"\n inputmode=\"numeric\"\n style=\"width:60px;padding:10px;font-size:18px;margin-left:10px;border:2px solid #ddd;border-radius:4px;text-align:center;\"\n onkeypress=\"return \/[0-5]\/.test(event.key)\"\n oninput=\"this.value=this.value.replace(\/[^0-5]\/g,'').slice(0,1)\">\n <\/div>\n <\/div>\n <div style=\"background:#f9f9f9;padding:20px;margin-bottom:20px;border-radius:5px;border-left:4px solid #0073aa;\">\n <h3 style=\"margin-top:0;color:#0073aa;\">Question 6<\/h3>\n <div style=\"line-height:1.8;margin:15px 0;\">\n An elderly-man with history of Diabetes mellitus and Coronary Artery Disease comes for follow-up, with complaints of muscle pains. Which one of the following drugs could be the most likely cause? <br \/>\r\n1. Aspirin <br \/>\r\n2. Glimepiride <br \/>\r\n3. Enalapril <br \/>\r\n4. Atorvastatin <\/div>\n <div style=\"margin-top:15px;\">\n <label style=\"font-weight:bold;\">\n Your Answer (0\u20135): <\/label>\n \n <input type=\"text\"\n name=\"answer_10\"\n id=\"mc_10\"\n data-type=\"multiple_choice\"\n maxlength=\"1\"\n inputmode=\"numeric\"\n style=\"width:60px;padding:10px;font-size:18px;margin-left:10px;border:2px solid #ddd;border-radius:4px;text-align:center;\"\n onkeypress=\"return \/[0-5]\/.test(event.key)\"\n oninput=\"this.value=this.value.replace(\/[^0-5]\/g,'').slice(0,1)\">\n <\/div>\n <\/div>\n <div style=\"background:#f9f9f9;padding:20px;margin-bottom:20px;border-radius:5px;border-left:4px solid #0073aa;\">\n <h3 style=\"margin-top:0;color:#0073aa;\">Question 7<\/h3>\n <div style=\"line-height:1.8;margin:15px 0;\">\n A 68-year-old man with diabetes and CAD on atorvastatin 80 mg develops muscle pain. His creatine kinase is 450 IU\/L (normal <200). What is the MOST appropriate next step?<br \/>\r\n1. Immediately discontinue the statin permanently<br \/>\r\n2. Continue statin and recheck CK in 1 week<br \/>\r\n3. Switch to ezetimibe monotherapy<br \/>\r\n4. Reduce atorvastatin dose to 40 mg and monitor <\/div>\n <div style=\"margin-top:15px;\">\n <label style=\"font-weight:bold;\">\n Your Answer (0\u20135): <\/label>\n \n <input type=\"text\"\n name=\"answer_11\"\n id=\"mc_11\"\n data-type=\"multiple_choice\"\n maxlength=\"1\"\n inputmode=\"numeric\"\n style=\"width:60px;padding:10px;font-size:18px;margin-left:10px;border:2px solid #ddd;border-radius:4px;text-align:center;\"\n onkeypress=\"return \/[0-5]\/.test(event.key)\"\n oninput=\"this.value=this.value.replace(\/[^0-5]\/g,'').slice(0,1)\">\n <\/div>\n <\/div>\n <div style=\"background:#f9f9f9;padding:20px;margin-bottom:20px;border-radius:5px;border-left:4px solid #0073aa;\">\n <h3 style=\"margin-top:0;color:#0073aa;\">Question 8<\/h3>\n <div style=\"line-height:1.8;margin:15px 0;\">\n A patient with prior MI and diabetes has LDL of 95 mg\/dL on atorvastatin 20 mg but develops myalgia. What is the target LDL for this very high-risk patient?<br \/>\r\n1. <100 mg\/dL<br \/>\r\n2. <70 mg\/dL<br \/>\r\n3. <55 mg\/dL<br \/>\r\n4. <40 mg\/dL <\/div>\n <div style=\"margin-top:15px;\">\n <label style=\"font-weight:bold;\">\n Your Answer (0\u20135): <\/label>\n \n <input type=\"text\"\n name=\"answer_14\"\n id=\"mc_14\"\n data-type=\"multiple_choice\"\n maxlength=\"1\"\n inputmode=\"numeric\"\n style=\"width:60px;padding:10px;font-size:18px;margin-left:10px;border:2px solid #ddd;border-radius:4px;text-align:center;\"\n onkeypress=\"return \/[0-5]\/.test(event.key)\"\n oninput=\"this.value=this.value.replace(\/[^0-5]\/g,'').slice(0,1)\">\n <\/div>\n <\/div>\n <div style=\"background:#f9f9f9;padding:20px;margin-bottom:20px;border-radius:5px;border-left:4px solid #0073aa;\">\n <h3 style=\"margin-top:0;color:#0073aa;\">Question 9<\/h3>\n <div style=\"line-height:1.8;margin:15px 0;\">\n A patient develops muscle pain on atorvastatin. After stopping the statin for 3 weeks, symptoms resolve. What rechallenge strategy is MOST appropriate?<br \/>\r\n1. Resume atorvastatin 80 mg<br \/>\r\n2. Try pravastatin 40 mg (hydrophilic statin)<br \/>\r\n3. Never use any statin again<br \/>\r\n4. Wait 6 months before any rechallenge <\/div>\n <div style=\"margin-top:15px;\">\n <label style=\"font-weight:bold;\">\n Your Answer (0\u20135): <\/label>\n \n <input type=\"text\"\n name=\"answer_15\"\n id=\"mc_15\"\n data-type=\"multiple_choice\"\n maxlength=\"1\"\n inputmode=\"numeric\"\n style=\"width:60px;padding:10px;font-size:18px;margin-left:10px;border:2px solid #ddd;border-radius:4px;text-align:center;\"\n onkeypress=\"return \/[0-5]\/.test(event.key)\"\n oninput=\"this.value=this.value.replace(\/[^0-5]\/g,'').slice(0,1)\">\n <\/div>\n <\/div>\n <div style=\"background:#f9f9f9;padding:20px;margin-bottom:20px;border-radius:5px;border-left:4px solid #0073aa;\">\n <h3 style=\"margin-top:0;color:#0073aa;\">Question 10<\/h3>\n <div style=\"line-height:1.8;margin:15px 0;\">\n A 70-year-old on atorvastatin, amlodipine, and clarithromycin for pneumonia develops severe myalgia. What is the MOST likely explanation?<br \/>\r\n1. Pneumonia causes myalgia<br \/>\r\n2. Drug interaction between clarithromycin and atorvastatin<br \/>\r\n3. Amlodipine-induced myopathy<br \/>\r\n4. Age-related muscle weakness <\/div>\n <div style=\"margin-top:15px;\">\n <label style=\"font-weight:bold;\">\n Your Answer (0\u20135): <\/label>\n \n <input type=\"text\"\n name=\"answer_16\"\n id=\"mc_16\"\n data-type=\"multiple_choice\"\n maxlength=\"1\"\n inputmode=\"numeric\"\n style=\"width:60px;padding:10px;font-size:18px;margin-left:10px;border:2px solid #ddd;border-radius:4px;text-align:center;\"\n onkeypress=\"return \/[0-5]\/.test(event.key)\"\n oninput=\"this.value=this.value.replace(\/[^0-5]\/g,'').slice(0,1)\">\n <\/div>\n <\/div>\n \n <div style=\"text-align:center;margin-top:20px;\">\n <button type=\"submit\"\n style=\"background:#0073aa;color:white;padding:15px 40px;border:none;border-radius:5px;font-size:18px;cursor:pointer;font-weight:bold;\">\n Submit Answers\n <\/button>\n <\/div>\n <\/form>\n\n <div id=\"avinquiz-results-1\" style=\"display:none;margin-top:30px;\"><\/div>\n <\/div>\n\n <script>\n jQuery(document).ready(function($) {\n \/\/ Record quiz start time\n var avinquizStart = Date.now();\n document.getElementById('avinquiz-start-time').value = avinquizStart;\n\n $('#avinquiz-form-1').on('submit', function(e) {\n e.preventDefault();\n var elapsed = Math.round((Date.now() - avinquizStart) \/ 1000);\n var mins = Math.floor(elapsed \/ 60);\n var secs = elapsed % 60;\n var label = mins > 0 ? mins + 'm' + (secs > 0 ? 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AF is usually compatible with life but… <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"[\"title\",\"meta\",\"content\",\"tags\",\"comments\"]","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-26014","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n<title>Atrial Fibrillation - atsixty<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/atsixty.com\/index.php\/neet-pg\/atrial-fibrillation\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Atrial Fibrillation - atsixty\" \/>\n<meta property=\"og:description\" content=\"Atrial vs Ventricular Fibrillation \u2013 High\u2011Yield Review for NEET PG | atsixty.com Atrial Fibrillation vs Ventricular Fibrillation \u2013 High\u2011Yield Review Target audience: MBBS doctors preparing for NEET PG \/ INI\u2011CET \/ CMS. Atrial fibrillation (AF) and ventricular fibrillation (VF) are commonly tested arrhythmias with entirely different clinical urgency. AF is usually compatible with life but… \" \/>\n<meta property=\"og:url\" content=\"https:\/\/atsixty.com\/index.php\/neet-pg\/atrial-fibrillation\/\" \/>\n<meta property=\"og:site_name\" content=\"atsixty\" \/>\n<meta property=\"article:published_time\" content=\"2025-12-16T18:00:13+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-06-18T04:39:50+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/atsixty.com\/wp-content\/uploads\/2025\/12\/atrial_ventricular_fibrillation_ecg.png\" \/>\n<meta name=\"author\" content=\"Avi\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Avi\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/atsixty.com\\\/index.php\\\/neet-pg\\\/atrial-fibrillation\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/atsixty.com\\\/index.php\\\/neet-pg\\\/atrial-fibrillation\\\/\"},\"author\":{\"name\":\"Avi\",\"@id\":\"https:\\\/\\\/atsixty.com\\\/#\\\/schema\\\/person\\\/cf65e7ac7d8226d95c0bdf1036f7951d\"},\"headline\":\"Atrial Fibrillation\",\"datePublished\":\"2025-12-16T18:00:13+00:00\",\"dateModified\":\"2026-06-18T04:39:50+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/atsixty.com\\\/index.php\\\/neet-pg\\\/atrial-fibrillation\\\/\"},\"wordCount\":425,\"publisher\":{\"@id\":\"https:\\\/\\\/atsixty.com\\\/#\\\/schema\\\/person\\\/cf65e7ac7d8226d95c0bdf1036f7951d\"},\"image\":{\"@id\":\"https:\\\/\\\/atsixty.com\\\/index.php\\\/neet-pg\\\/atrial-fibrillation\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/atsixty.com\\\/wp-content\\\/uploads\\\/2025\\\/12\\\/atrial_ventricular_fibrillation_ecg.png\",\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/atsixty.com\\\/index.php\\\/neet-pg\\\/atrial-fibrillation\\\/\",\"url\":\"https:\\\/\\\/atsixty.com\\\/index.php\\\/neet-pg\\\/atrial-fibrillation\\\/\",\"name\":\"Atrial Fibrillation - 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Atrial fibrillation (AF) and ventricular fibrillation (VF) are commonly tested arrhythmias with entirely different clinical urgency. 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{"id":26014,"date":"2025-12-16T18:00:13","date_gmt":"2025-12-16T18:00:13","guid":{"rendered":"https:\/\/atsixty.com\/?p=26014"},"modified":"2026-06-18T10:09:50","modified_gmt":"2026-06-18T04:39:50","slug":"atrial-fibrillation","status":"publish","type":"post","link":"https:\/\/atsixty.com\/index.php\/uncategorized\/atrial-fibrillation\/","title":{"rendered":"Atrial Fibrillation"},"content":{"rendered":"\n\n\n\n\n \n \n Atrial vs Ventricular Fibrillation \u2013 High\u2011Yield Review for NEET PG | atsixty.com<\/title>\n <meta name=\"description\" content=\"Concise, exam\u2011oriented comparison of atrial fibrillation and ventricular fibrillation for MBBS doctors and NEET PG aspirants. Definitions, ECG clues, causes, management and key differences, MCQ.\" \/>\n <link rel=\"canonical\" href=\"https:\/\/atsixty.com\/atrial-vs-ventricular-fibrillation-neet-pg\" \/>  <meta name=\"robots\" content=\"index, follow\" \/>\n <meta name=\"author\" content=\"atsixty.com\" \/>\n <meta name=\"keywords\" content=\"atrial fibrillation, ventricular fibrillation, AF vs VF, ECG AF VF, NEET PG cardiology, arrhythmia MCQs, INI-CET cardiology\" \/>  <meta property=\"og:type\" content=\"article\" \/>\n <meta property=\"og:title\" content=\"Atrial vs Ventricular Fibrillation \u2013 High-Yield Review for NEET PG\" \/>\n <meta property=\"og:description\" content=\"Exam-focused comparison of AF and VF with ECG clues, causes, management and key differences for NEET PG and INI-CET.\" \/>\n <meta property=\"og:url\" content=\"https:\/\/atsixty.com\/atrial-vs-ventricular-fibrillation-neet-pg\" \/>\n <meta property=\"og:site_name\" content=\"atsixty.com\" \/>\n <meta property=\"og:image\" content=\"https:\/\/atsixty.com\/wp-content\/uploads\/2025\/12\/atrial_ventricular_fibrillation_ecg.png\" \/>  <meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n <meta name=\"twitter:title\" content=\"Atrial vs Ventricular Fibrillation \u2013 High-Yield Review\" \/>\n <meta name=\"twitter:description\" content=\"Concise AF vs VF review with ECG patterns and management pearls for NEET PG aspirants.\" \/>\n <meta name=\"twitter:image\" content=\"https:\/\/atsixty.com\/wp-content\/uploads\/2025\/12\/atrial_ventricular_fibrillation_ecg.png\" \/><\/head>\n<body>\n<article style=\"max-width:760px;margin:28px auto;font-family:system-ui,Segoe UI,Roboto,Arial;line-height:1.55;color:#111;\"><h1>Atrial Fibrillation vs Ventricular Fibrillation \u2013 High\u2011Yield Review<\/h1>\n<p><em>Target audience:<\/em> MBBS doctors preparing for NEET PG \/ INI\u2011CET \/ CMS.<\/p><p>Atrial fibrillation (AF) and ventricular fibrillation (VF) are commonly tested arrhythmias with entirely different clinical urgency. AF is usually compatible with life but carries long\u2011term thromboembolic risk, whereas VF is immediately fatal unless treated within minutes. This short note focuses only on exam\u2011relevant and bedside\u2011relevant facts. <a href=\"#test-yourself\">Jump to Test Yourself (MCQs)<\/a><\/p>\n <figure>\n<img decoding=\"async\" src=\"https:\/\/atsixty.com\/wp-content\/uploads\/2025\/12\/atrial_ventricular_fibrillation_ecg.png\" alt=\"Side\u2011by\u2011side ECG comparison of atrial fibrillation and ventricular fibrillation\" loading=\"lazy\" style=\"width:100%;height:auto\" \/>\n <figcaption>ECG comparison: atrial fibrillation (left) vs ventricular fibrillation (right).<\/figcaption>\n<\/figure>\n<h2>Atrial Fibrillation (AF)<\/h2>\n<ul>\n <li><strong>Definition:<\/strong> Chaotic atrial electrical activity causing loss of coordinated atrial contraction and an <strong>irregularly irregular<\/strong> ventricular rhythm.<\/li>\n <li><strong>Common causes:<\/strong> Hypertension, coronary artery disease, rheumatic mitral stenosis (classic), hyperthyroidism, alcohol (\"holiday heart\"), post\u2011cardiac surgery.<\/li>\n <li><strong>ECG hallmarks:<\/strong> Absence of P waves, presence of fibrillatory (f) waves, irregular RR intervals, usually narrow QRS.<\/li>\n <li><strong>Hemodynamic effect:<\/strong> Loss of atrial kick \u2192 reduced cardiac output, more significant in elderly and diastolic dysfunction.<\/li>\n <li><strong>Major complication:<\/strong> Thromboembolism, especially ischemic stroke due to clot formation in the left atrial appendage.<\/li>\n <li><strong>Management principles:<\/strong>\n <ul>\n <li>Rate control: \u03b2\u2011blockers, diltiazem, verapamil; digoxin preferred in heart failure.<\/li>\n <li>Rhythm control: amiodarone or electrical cardioversion in selected patients.<\/li>\n <li>Anticoagulation guided by <strong>CHA\u2082DS\u2082\u2011VASc<\/strong> score.<\/li>\n <li>Definitive option: catheter ablation (pulmonary vein isolation).<\/li>\n <\/ul>\n <\/li>\n<\/ul><h2>Ventricular Fibrillation (VF)<\/h2>\n<ul>\n <li><strong>Definition:<\/strong> Rapid, disorganized ventricular electrical activity resulting in <strong>no effective cardiac output<\/strong>.<\/li>\n <li><strong>Most common cause:<\/strong> Acute myocardial infarction.<\/li>\n <li><strong>Other causes:<\/strong> Hypoxia, acidosis, hypokalemia, hypomagnesemia, drug toxicity, cardiomyopathy.<\/li>\n <li><strong>ECG features:<\/strong> Completely chaotic waveform with no identifiable P waves, QRS complexes or T waves.<\/li>\n <li><strong>Clinical presentation:<\/strong> Sudden cardiac arrest \u2013 patient is pulseless and unconscious.<\/li>\n <li><strong>Management:<\/strong>\n <ul>\n <li><strong>Immediate defibrillation<\/strong> \u2013 single most important life\u2011saving step.<\/li>\n <li>High\u2011quality CPR.<\/li>\n <li>Epinephrine and amiodarone.<\/li>\n <li>Post\u2011ROSC: identify reversible causes and consider ICD for secondary prevention.<\/li>\n <\/ul>\n <\/li>\n<\/ul><h2>AF vs VF \u2013 Key Exam Differences<\/h2>\n<table border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse;width:100%\">\n <tr><th>Feature<\/th><th>Atrial Fibrillation<\/th><th>Ventricular Fibrillation<\/th><\/tr>\n <tr><td>Chamber involved<\/td><td>Atria<\/td><td>Ventricles<\/td><\/tr>\n <tr><td>Pulse<\/td><td>Present, irregular<\/td><td><strong>Absent<\/strong><\/td><\/tr>\n <tr><td>Immediate risk<\/td><td>Stroke<\/td><td><strong>Sudden death<\/strong><\/td><\/tr>\n <tr><td>ECG<\/td><td>No P waves, irregularly irregular<\/td><td>Chaotic baseline<\/td><\/tr>\n <tr><td>First\u2011line action<\/td><td>Rate control + anticoagulation<\/td><td><strong>Defibrillation<\/strong><\/td><\/tr>\n<\/table><h2>High\u2011Yield Clinical Pearls<\/h2>\n<ul>\n <li>AF is never an indication for emergency defibrillation unless associated with instability.<\/li>\n <li>VF should never be treated with drugs before attempting defibrillation.<\/li>\n <li>Always think of AF when the pulse is irregularly irregular.<\/li>\n<\/ul><p><strong>Take\u2011home message:<\/strong> AF is a chronic arrhythmia with thromboembolic implications; VF is an electrical catastrophe requiring instant shock. <em>Confusing the two in exams or emergencies can be fatal.<\/em><\/p><p style=\"font-size:0.9em;color:#555\">\u00a9 atsixty.com \u2013 concise medical notes for postgraduate entrance preparation.<\/p><\/article>\n<\/body>\n<\/html>\n\n\n\n<hr>\n\n<h2 id=\"test-yourself\">Test Yourself: Atrial vs Ventricular Fibrillation<\/h2>\n<p><em>Quick revision MCQs for NEET PG \/ INI-CET<\/em><\/p>\n\n <div id=\"avinquiz-container-1\">\n <div style=\"background:#f0f6fc;padding:15px;margin-bottom:20px;border-radius:5px;border-left:4px solid #2271b1;\">\n <h2 style=\"margin:0 0 5px;color:#2271b1;\">Atrial Fibrillation<\/h2>\n <p style=\"margin:0;color:#666;\">Questions: 10<\/p>\n <\/div>\n\n <form id=\"avinquiz-form-1\">\n <input type=\"hidden\" name=\"quiz_id\" value=\"1\">\n <input type=\"hidden\" name=\"quiz_name\" value=\"Atrial Fibrillation\">\n <input type=\"hidden\" name=\"start_time\" id=\"avinquiz-start-time\" value=\"\">\n <div style=\"background:#f9f9f9;padding:20px;margin-bottom:20px;border-radius:5px;border-left:4px solid #0073aa;\">\n <h3 style=\"margin-top:0;color:#0073aa;\">Question 1<\/h3>\n <div style=\"line-height:1.8;margin:15px 0;\">\n A chronic alcoholic develops a paroxysm of palpitations after alcohol binge. Which of the following Arrhythmia is most likely?<br \/>\r\n1. Ventricular fibrillation <br \/>\r\n2. Ventricular premature complex <br \/>\r\n3. Atrial flutter <br \/>\r\n4. Atrial fibrillation <\/div>\n <div style=\"margin-top:15px;\">\n <label style=\"font-weight:bold;\">\n Your Answer (0\u20135): <\/label>\n \n <input type=\"text\"\n name=\"answer_1\"\n id=\"mc_1\"\n data-type=\"multiple_choice\"\n maxlength=\"1\"\n inputmode=\"numeric\"\n style=\"width:60px;padding:10px;font-size:18px;margin-left:10px;border:2px solid #ddd;border-radius:4px;text-align:center;\"\n onkeypress=\"return \/[0-5]\/.test(event.key)\"\n oninput=\"this.value=this.value.replace(\/[^0-5]\/g,'').slice(0,1)\">\n <\/div>\n <\/div>\n <div style=\"background:#f9f9f9;padding:20px;margin-bottom:20px;border-radius:5px;border-left:4px solid #0073aa;\">\n <h3 style=\"margin-top:0;color:#0073aa;\">Question 2<\/h3>\n <div style=\"line-height:1.8;margin:15px 0;\">\n A 62-year-old man with chronic alcohol use develops atrial fibrillation after binge drinking. Which statement regarding management is MOST accurate?<br \/>\r\n1. Anticoagulation is unnecessary as the episode is self-limiting<br \/>\r\n2. Beta-blockers are contraindicated in alcohol-related AF<br \/>\r\n3. The arrhythmia typically resolves within 24 hours with abstinence<br \/>\r\n4. Cardioversion should be performed immediately in all cases <\/div>\n <div style=\"margin-top:15px;\">\n <label style=\"font-weight:bold;\">\n Your Answer (0\u20135): <\/label>\n \n <input type=\"text\"\n name=\"answer_3\"\n id=\"mc_3\"\n data-type=\"multiple_choice\"\n maxlength=\"1\"\n inputmode=\"numeric\"\n style=\"width:60px;padding:10px;font-size:18px;margin-left:10px;border:2px solid #ddd;border-radius:4px;text-align:center;\"\n onkeypress=\"return \/[0-5]\/.test(event.key)\"\n oninput=\"this.value=this.value.replace(\/[^0-5]\/g,'').slice(0,1)\">\n <\/div>\n <\/div>\n <div style=\"background:#f9f9f9;padding:20px;margin-bottom:20px;border-radius:5px;border-left:4px solid #0073aa;\">\n <h3 style=\"margin-top:0;color:#0073aa;\">Question 3<\/h3>\n <div style=\"line-height:1.8;margin:15px 0;\">\n A patient develops atrial fibrillation 24 hours after heavy alcohol consumption. His CHA\u2082DS\u2082-VASc score is 3. Which statement is correct?<br \/>\r\n1. Anticoagulation is not needed for paroxysmal AF<br \/>\r\n2. The stroke risk should be assessed even though the episode may be transient<br \/>\r\n3. Aspirin alone is sufficient for stroke prevention<br \/>\r\n4. Anticoagulation can be deferred until AF becomes permanent <\/div>\n <div style=\"margin-top:15px;\">\n <label style=\"font-weight:bold;\">\n Your Answer (0\u20135): <\/label>\n \n <input type=\"text\"\n name=\"answer_4\"\n id=\"mc_4\"\n data-type=\"multiple_choice\"\n maxlength=\"1\"\n inputmode=\"numeric\"\n style=\"width:60px;padding:10px;font-size:18px;margin-left:10px;border:2px solid #ddd;border-radius:4px;text-align:center;\"\n onkeypress=\"return \/[0-5]\/.test(event.key)\"\n oninput=\"this.value=this.value.replace(\/[^0-5]\/g,'').slice(0,1)\">\n <\/div>\n <\/div>\n <div style=\"background:#f9f9f9;padding:20px;margin-bottom:20px;border-radius:5px;border-left:4px solid #0073aa;\">\n <h3 style=\"margin-top:0;color:#0073aa;\">Question 4<\/h3>\n <div style=\"line-height:1.8;margin:15px 0;\">\n A chronic alcoholic with new-onset AF has the following: Age 72, diabetes, hypertension, prior stroke. What is his CHA\u2082DS\u2082-VASc score?<br \/>\r\n1. 3<br \/>\r\n2. 4<br \/>\r\n3. 5<br \/>\r\n4. 6 <\/div>\n <div style=\"margin-top:15px;\">\n <label style=\"font-weight:bold;\">\n Your Answer (0\u20135): <\/label>\n \n <input type=\"text\"\n name=\"answer_7\"\n id=\"mc_7\"\n data-type=\"multiple_choice\"\n maxlength=\"1\"\n inputmode=\"numeric\"\n style=\"width:60px;padding:10px;font-size:18px;margin-left:10px;border:2px solid #ddd;border-radius:4px;text-align:center;\"\n onkeypress=\"return \/[0-5]\/.test(event.key)\"\n oninput=\"this.value=this.value.replace(\/[^0-5]\/g,'').slice(0,1)\">\n <\/div>\n <\/div>\n <div style=\"background:#f9f9f9;padding:20px;margin-bottom:20px;border-radius:5px;border-left:4px solid #0073aa;\">\n <h3 style=\"margin-top:0;color:#0073aa;\">Question 5<\/h3>\n <div style=\"line-height:1.8;margin:15px 0;\">\n Which diagnostic test is LEAST useful in the initial workup of suspected Holiday Heart Syndrome?<br \/>\r\n1.\tElectrocardiogram<br \/>\r\n2.\tSerum electrolytes (K\u207a, Mg\u00b2\u207a, Ca\u00b2\u207a)<br \/>\r\n3.\tCardiac MRI<br \/>\r\n4.\tThyroid function tests <\/div>\n <div style=\"margin-top:15px;\">\n <label style=\"font-weight:bold;\">\n Your Answer (0\u20135): <\/label>\n \n <input type=\"text\"\n name=\"answer_9\"\n id=\"mc_9\"\n data-type=\"multiple_choice\"\n maxlength=\"1\"\n inputmode=\"numeric\"\n style=\"width:60px;padding:10px;font-size:18px;margin-left:10px;border:2px solid #ddd;border-radius:4px;text-align:center;\"\n onkeypress=\"return \/[0-5]\/.test(event.key)\"\n oninput=\"this.value=this.value.replace(\/[^0-5]\/g,'').slice(0,1)\">\n <\/div>\n <\/div>\n <div style=\"background:#f9f9f9;padding:20px;margin-bottom:20px;border-radius:5px;border-left:4px solid #0073aa;\">\n <h3 style=\"margin-top:0;color:#0073aa;\">Question 6<\/h3>\n <div style=\"line-height:1.8;margin:15px 0;\">\n An elderly-man with history of Diabetes mellitus and Coronary Artery Disease comes for follow-up, with complaints of muscle pains. Which one of the following drugs could be the most likely cause? <br \/>\r\n1. Aspirin <br \/>\r\n2. Glimepiride <br \/>\r\n3. Enalapril <br \/>\r\n4. Atorvastatin <\/div>\n <div style=\"margin-top:15px;\">\n <label style=\"font-weight:bold;\">\n Your Answer (0\u20135): <\/label>\n \n <input type=\"text\"\n name=\"answer_10\"\n id=\"mc_10\"\n data-type=\"multiple_choice\"\n maxlength=\"1\"\n inputmode=\"numeric\"\n style=\"width:60px;padding:10px;font-size:18px;margin-left:10px;border:2px solid #ddd;border-radius:4px;text-align:center;\"\n onkeypress=\"return \/[0-5]\/.test(event.key)\"\n oninput=\"this.value=this.value.replace(\/[^0-5]\/g,'').slice(0,1)\">\n <\/div>\n <\/div>\n <div style=\"background:#f9f9f9;padding:20px;margin-bottom:20px;border-radius:5px;border-left:4px solid #0073aa;\">\n <h3 style=\"margin-top:0;color:#0073aa;\">Question 7<\/h3>\n <div style=\"line-height:1.8;margin:15px 0;\">\n A 68-year-old man with diabetes and CAD on atorvastatin 80 mg develops muscle pain. His creatine kinase is 450 IU\/L (normal <200). What is the MOST appropriate next step?<br \/>\r\n1. Immediately discontinue the statin permanently<br \/>\r\n2. Continue statin and recheck CK in 1 week<br \/>\r\n3. Switch to ezetimibe monotherapy<br \/>\r\n4. Reduce atorvastatin dose to 40 mg and monitor <\/div>\n <div style=\"margin-top:15px;\">\n <label style=\"font-weight:bold;\">\n Your Answer (0\u20135): <\/label>\n \n <input type=\"text\"\n name=\"answer_11\"\n id=\"mc_11\"\n data-type=\"multiple_choice\"\n maxlength=\"1\"\n inputmode=\"numeric\"\n style=\"width:60px;padding:10px;font-size:18px;margin-left:10px;border:2px solid #ddd;border-radius:4px;text-align:center;\"\n onkeypress=\"return \/[0-5]\/.test(event.key)\"\n oninput=\"this.value=this.value.replace(\/[^0-5]\/g,'').slice(0,1)\">\n <\/div>\n <\/div>\n <div style=\"background:#f9f9f9;padding:20px;margin-bottom:20px;border-radius:5px;border-left:4px solid #0073aa;\">\n <h3 style=\"margin-top:0;color:#0073aa;\">Question 8<\/h3>\n <div style=\"line-height:1.8;margin:15px 0;\">\n A patient with prior MI and diabetes has LDL of 95 mg\/dL on atorvastatin 20 mg but develops myalgia. What is the target LDL for this very high-risk patient?<br \/>\r\n1. <100 mg\/dL<br \/>\r\n2. <70 mg\/dL<br \/>\r\n3. <55 mg\/dL<br \/>\r\n4. <40 mg\/dL <\/div>\n <div style=\"margin-top:15px;\">\n <label style=\"font-weight:bold;\">\n Your Answer (0\u20135): <\/label>\n \n <input type=\"text\"\n name=\"answer_14\"\n id=\"mc_14\"\n data-type=\"multiple_choice\"\n maxlength=\"1\"\n inputmode=\"numeric\"\n style=\"width:60px;padding:10px;font-size:18px;margin-left:10px;border:2px solid #ddd;border-radius:4px;text-align:center;\"\n onkeypress=\"return \/[0-5]\/.test(event.key)\"\n oninput=\"this.value=this.value.replace(\/[^0-5]\/g,'').slice(0,1)\">\n <\/div>\n <\/div>\n <div style=\"background:#f9f9f9;padding:20px;margin-bottom:20px;border-radius:5px;border-left:4px solid #0073aa;\">\n <h3 style=\"margin-top:0;color:#0073aa;\">Question 9<\/h3>\n <div style=\"line-height:1.8;margin:15px 0;\">\n A patient develops muscle pain on atorvastatin. After stopping the statin for 3 weeks, symptoms resolve. What rechallenge strategy is MOST appropriate?<br \/>\r\n1. Resume atorvastatin 80 mg<br \/>\r\n2. Try pravastatin 40 mg (hydrophilic statin)<br \/>\r\n3. Never use any statin again<br \/>\r\n4. Wait 6 months before any rechallenge <\/div>\n <div style=\"margin-top:15px;\">\n <label style=\"font-weight:bold;\">\n Your Answer (0\u20135): <\/label>\n \n <input type=\"text\"\n name=\"answer_15\"\n id=\"mc_15\"\n data-type=\"multiple_choice\"\n maxlength=\"1\"\n inputmode=\"numeric\"\n style=\"width:60px;padding:10px;font-size:18px;margin-left:10px;border:2px solid #ddd;border-radius:4px;text-align:center;\"\n onkeypress=\"return \/[0-5]\/.test(event.key)\"\n oninput=\"this.value=this.value.replace(\/[^0-5]\/g,'').slice(0,1)\">\n <\/div>\n <\/div>\n <div style=\"background:#f9f9f9;padding:20px;margin-bottom:20px;border-radius:5px;border-left:4px solid #0073aa;\">\n <h3 style=\"margin-top:0;color:#0073aa;\">Question 10<\/h3>\n <div style=\"line-height:1.8;margin:15px 0;\">\n A 70-year-old on atorvastatin, amlodipine, and clarithromycin for pneumonia develops severe myalgia. What is the MOST likely explanation?<br \/>\r\n1. Pneumonia causes myalgia<br \/>\r\n2. Drug interaction between clarithromycin and atorvastatin<br \/>\r\n3. Amlodipine-induced myopathy<br \/>\r\n4. Age-related muscle weakness <\/div>\n <div style=\"margin-top:15px;\">\n <label style=\"font-weight:bold;\">\n Your Answer (0\u20135): <\/label>\n \n <input type=\"text\"\n name=\"answer_16\"\n id=\"mc_16\"\n data-type=\"multiple_choice\"\n maxlength=\"1\"\n inputmode=\"numeric\"\n style=\"width:60px;padding:10px;font-size:18px;margin-left:10px;border:2px solid #ddd;border-radius:4px;text-align:center;\"\n onkeypress=\"return \/[0-5]\/.test(event.key)\"\n oninput=\"this.value=this.value.replace(\/[^0-5]\/g,'').slice(0,1)\">\n <\/div>\n <\/div>\n \n <div style=\"text-align:center;margin-top:20px;\">\n <button type=\"submit\"\n style=\"background:#0073aa;color:white;padding:15px 40px;border:none;border-radius:5px;font-size:18px;cursor:pointer;font-weight:bold;\">\n Submit Answers\n <\/button>\n <\/div>\n <\/form>\n\n <div id=\"avinquiz-results-1\" style=\"display:none;margin-top:30px;\"><\/div>\n <\/div>\n\n <script>\n jQuery(document).ready(function($) {\n \/\/ Record quiz start time\n var avinquizStart = Date.now();\n document.getElementById('avinquiz-start-time').value = avinquizStart;\n\n $('#avinquiz-form-1').on('submit', function(e) {\n e.preventDefault();\n var elapsed = Math.round((Date.now() - avinquizStart) \/ 1000);\n var mins = Math.floor(elapsed \/ 60);\n var secs = elapsed % 60;\n var label = mins > 0 ? mins + 'm' + (secs > 0 ? ' ' + secs + 's' : '') : elapsed + 's';\n var formData = $(this).serialize() + '&action=avinquiz_submit&elapsed_label=' + encodeURIComponent(label);\n $.ajax({\n url: 'https:\/\/atsixty.com\/wp-admin\/admin-ajax.php',\n type: 'POST',\n data: formData,\n success: function(response) {\n $('#avinquiz-form-1').hide();\n $('#avinquiz-results-1').html(response).slideDown();\n $('html,body').animate({\n scrollTop: $('#avinquiz-results-1').offset().top - 100\n }, 500);\n }\n });\n });\n });\n <\/script>\n \n","protected":false},"excerpt":{"rendered":"<p>Atrial vs Ventricular Fibrillation \u2013 High\u2011Yield Review for NEET PG | atsixty.com Atrial Fibrillation vs Ventricular Fibrillation \u2013 High\u2011Yield Review Target audience: MBBS doctors preparing for NEET PG \/ INI\u2011CET \/ CMS. Atrial fibrillation (AF) and ventricular fibrillation (VF) are commonly tested arrhythmias with entirely different clinical urgency. AF is usually compatible with life but… <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"[\"title\",\"meta\",\"content\",\"tags\",\"comments\"]","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-26014","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n<title>Atrial Fibrillation - atsixty<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/atsixty.com\/index.php\/neet-pg\/atrial-fibrillation\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Atrial Fibrillation - atsixty\" \/>\n<meta property=\"og:description\" content=\"Atrial vs Ventricular Fibrillation \u2013 High\u2011Yield Review for NEET PG | atsixty.com Atrial Fibrillation vs Ventricular Fibrillation \u2013 High\u2011Yield Review Target audience: MBBS doctors preparing for NEET PG \/ INI\u2011CET \/ CMS. Atrial fibrillation (AF) and ventricular fibrillation (VF) are commonly tested arrhythmias with entirely different clinical urgency. 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Atrial fibrillation (AF) and ventricular fibrillation (VF) are commonly tested arrhythmias with entirely different clinical urgency. 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