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myocardial infarction on the ECG when preexisting left bundle branch block is present.",{"id":215,"name":216},5,"Ask Andrew",[218,229],{"type":219,"data":220},"video",{"readDurationInSeconds":221,"video":222},421,{"platform":223,"name":224,"url":225,"size":226},"Vimeo","How to diagnose myocardial infarction in the presence of left bundle branch block (LBBB) - Ask Andrew","https:\u002F\u002Fvimeo.com\u002F145370578",{"width":227,"height":228},480,270,{"type":230,"data":231},"free_text",{"readDurationInSeconds":232,"text":233},14.666666666666666,"\u003Cp>In this episode of Ask Andrew, you will learn how you can diagnose myocardial infarction on the ECG when preexisting left bundle branch block is present.\u003C\u002Fp>\u003Cp>You might also like these similar posts:\u003C\u002Fp>\u003Cul>\u003Cli>\u003Ca href=\"\u002Fmagazine\u002Fcardiac-magnetic-resonance-imaging-myocardial-infarction\">Cardiac magnetic resonance imaging in myocardial infarction\u003C\u002Fa>\u003C\u002Fli>\u003Cli>\u003Ca href=\"https:\u002F\u002Fwww.medmastery.com\u002Fmagazine\u002Fcommon-pacemaker-problems-part-1\">Common pacemaker problems (part 1): Failure to capture\u003C\u002Fa>\u003C\u002Fli>\u003Cli>\u003Ca href=\"https:\u002F\u002Fwww.medmastery.com\u002Fmagazine\u002Fcommon-pacemaker-problems-part-4-troubleshooting\">Common pacemaker problems (part 4): Troubleshooting\u003C\u002Fa>\u003C\u002Fli>\u003Cli>\u003Ca href=\"\u002Fmagazine\u002Fmodified-valsalva-maneuver-video-review\">The modified Valsalva maneuver—video review\u003C\u002Fa>\u003C\u002Fli>\u003Cli>\u003Ca href=\"\u002Fmagazine\u002Fspironolactone-and-drug-resistant-hypertension-video-review\">Spironolactone and drug-resistant hypertension—video review\u003C\u002Fa>\u003C\u002Fli>\u003C\u002Ful>",null,{"id":236,"name":237,"image":238,"profession":239,"relativeUrl":242,"specializations":243},1590,"Andrew R. Houghton, MD FRCP","https:\u002F\u002Fmedmastery-backend-prod-kjbeds.s3.eu-west-1.amazonaws.com\u002Fmedia\u002Fimages\u002F9c43cef8-716d-4d30-99af-035d10a4581d",{"name":240,"description":241},"Cardiologist","Cardiologist and cardiac imaging specialist at the United Lincolnshire Teaching Hospitals NHS Trust in the UK.","\u002Fteachers\u002Fandrew-r-houghton-md-frcp",[244,245,246,247],"Imaging","Ultrasound","Cardiology","Infectious diseases",24,"1m",[251,270,296],{"id":252,"title":253,"text":254,"image":255,"author":263,"path":266,"readDuration":248,"readDurationFormatted":249,"internal":267},80,"Ask Andrew: Determining the origin of ventricular ectopic beats on the ECG","In this episode of Ask Andrew, you will learn how to determine the origin of ventricular ectopic beats, how to tell if the ectopic originates in the apex, and more.",{"alt":256,"title":256,"size":257,"location":260},"",{"width":258,"height":259},220,219,{"bucket":261,"key":262},"public-drupal-medmastery-assets-production","\u002Fmigrated-images\u002Fmagazine_151203.png",{"id":236,"title":237,"relativeURL":242,"image":238,"professionLong":241,"profession":264,"weight":265},{"name":240},1,"\u002Fmagazine\u002Fdetermining-origin-ventricular-ectopic-beats-ecg-ask-andrew",{"created":268,"updated":269,"published":268},1449137029,1735918059,{"id":271,"title":272,"text":273,"image":274,"author":280,"path":289,"readDuration":290,"readDurationFormatted":291,"internal":292},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":275,"title":256,"size":276,"location":278},"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":277,"height":277},1200,{"bucket":261,"key":279},"\u002F2026-05\u002FC17(1)_magazine image_0.png",{"id":281,"title":282,"relativeURL":283,"image":284,"professionLong":285,"profession":286,"weight":288},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":287},"Internist",4,"\u002Fmagazine\u002Fexercise-stress-ecg-inoca",141,"3m",{"created":293,"updated":294,"published":295},1778115738,1778118425,1778118255,{"id":297,"title":298,"text":299,"image":300,"author":306,"path":308,"readDuration":309,"readDurationFormatted":310,"internal":311},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":301,"title":256,"size":302,"location":304},"Lipid panel blood sample tubes used to test for hyperlipidemia in a laboratory setting",{"width":303,"height":303},600,{"bucket":261,"key":305},"\u002F2026-04\u002FC121_magazine image.png",{"id":281,"title":282,"relativeURL":283,"image":284,"professionLong":285,"profession":307,"weight":288},{"name":287},"\u002Fmagazine\u002Ftest-for-hyperlipidemia",246,"5m",{"created":312,"updated":313,"published":314},1777403036,1777572381,1777412421,{"seo":316,"og":318},{"title":317,"description":213},"Ask Andrew: How to diagnose myocardial infarction in the presence | Medmastery",{"title":319,"description":213,"image":320},"Ask Andrew: How to diagnose myocardial infarction in the presence of left bundle branch block ( | Medmastery",{"alt":256,"title":256,"size":321,"location":322},{"width":258,"height":258},{"bucket":261,"key":323},"\u002Fmigrated-images\u002Fmagazine_151111.png",{"id":325,"created":326,"updated":327,"published":326},76,1447254445,1735916505]