831 results
Limb Lead Reversal
In order to understand why the leads look the way they do, we must
As for the aVL/aVF ... remember that aVL ... /aVF/aVR are all ... Einthovens #Triangle #aVL ... #aVR #aVF
Myocardial infarction localization. A 12 lead EKG creates a 360 degree view of the electrical activity
perspective: II, III & aVL ... inferior leads), I & aVL ... as you can see aVR ... leads, again; all ... contiguous I, aVL
Left Ventricular Hypertrophy (LVH) Criteria
• Sokolow + Lyon 
 - S V1 + R V5 or
criteria - S V3 + R avl ... men - S V3 + R avl ... criteria - R avl
ECG of a 55-year-old man who presented to the ER with chest pain 
Computer interpretation: “Nonspecific
in II, III, & aVF ... Reciprocal STD in I & aVL ... Biphasic T-wave in aVL ... early Q’s in II & aVF
Knuckle Sign on ECG - Acute Pericarditis

Electrocardiogram of a 68-year-old woman two days after coronary artery
depression in aVR ... depression in I, II and aVL ... knuckle’ sign) in aVR
Left Anterior Fascicular Block on EKG
 • Left axis deviation (LAD) (-45 degrees to -90 degrees)
in leads I and aVL ... leads II, Ill, aVF
Normal Sinus Rhythm - ECG Diagnosis
Normal sinus rhythm (NSR) is an impulse that originates in the
leads I, II and aVF ... • inverted in aVR ... leads III and aVL
TypeA Aortic Dissection on POCUS Echocardiogram

80yo F presents with CP&SOB after syncope. BP 91/62, HR81, O2sat
afib, twi I & aVL
Causes of ST Segment Elevation - Differential Diagnosis Framework

STEMI:
 • Upsloping convex STE: "Pardee's sign" +
depression in aVR ... , not in aVL • ... depression in aVR ... , not in aVL, when ... lateral leads (I, aVL
De Winter's T Waves

Concerning for proximal LAD occlusion (Present in 2% of patients)
 • Upsloping ST-Depression
• STE in lead aVR ... ± aVL #DeWinters