289 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 ... Cardiology #ECG #EKG #LimbLeads ... #aVR #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
Pulsating Neck AV Fistula on Physical Exam
40 year old female patient, prior history of CKD on
Pulsating Neck AV ... Typically AV fistulas ... of congenital AVFs ... jugular #carotid #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 ... contiguous lead (aVR ... contiguous I, aVL
Anatomical Differential Diagnosis for Arrhythmias
 • SA node: Sinus bradycardia, Sick Sinus Syndrome (SSS)
 • AV
Syndrome (SSS) • AV ... Fibrillation (AF ... node: AV re-entrant ... tachycardia (AVRT), AV ... Fibrillation (V-Fib, VF
Left Anterior Fascicular Block on EKG
 • Left axis deviation (LAD) (-45 degrees to -90 degrees)
in leads I and aVL ... leads II, Ill, aVF
Approach to ECGs - VT vs. SVT - Wide Tachycardias
DDx = VT vs. SVT with BBB
All
is positive in aVR ... negative in I + aVF ... (> 160ms) - AV
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
EKG Interpretation Cheat Sheet
1) Rate 
 - Regular - Count-Off 
 - Irregular - Count number
interval < 120 ms = AV ... Dominant R wave in aVR ... • Lateral (I + aVL ... Inferior (II, III, aVF ... all leads except aVR
Algorithm for the Evaluation of Regular, Wide-Complex Tachycardia
1. aVR: Is the initial deflection in aVR positive?
Tachycardia 1. aVR ... deflection in aVR ... AV Dissociation: ... there evidence of AV