Left Anterior Fascicular Block on EKG • Left axis deviation (LAD) (-45 degrees to -90 degrees) • QRS duration is < 120ms • Small Q waves with tall R waves in leads I and aVL • Small R waves with deep S waves in leads II, Ill, aVF By Usama Nasir MD @usamanasirmd via @Visualmedapp #LAFB #Left #Anterior #Fascicular #Block #diagnosis #cardiology #EKG #ECG #Electrocardiogram #labeled #clinical #labeled
