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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 ... - a sinus and ventricular
EKG Interpretation Cheat Sheet
1) Rate 
 - Regular - Count-Off 
 - Irregular - Count number
interval < 120 ms = AV ... • Lateral (I + aVL ... Inferior (II, III, aVF ... ) • Right ventricular ... Arrhythmogenic right ventricular
Anatomical Differential Diagnosis for Arrhythmias
 • SA node: Sinus bradycardia, Sick Sinus Syndrome (SSS)
 • AV
• Ventricles: Ventricular ... Tachy-arrhythmias (ventricular ... Ventricles: Premature Ventricular ... Contractions (PVC), Ventricular ... Torsades de Pointes), Ventricular
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
Mechanisms of acute right ventricular dysfunction/failure (RVD/RVF) #rightventricle #rvfailure #rvdysfunction
of acute right ventricular ... dysfunction/failure (RVD/RVF
Ventricular Tachycardia in Wide Complex Tachycardia - Telemetry Diagnosis
 • Lead V1 - LBBB Criteria
 •
Ventricular Tachycardia ... RWPT) • Lead aVR ... #Algorithm #Ventricular
Left Ventricular Hypertrophy (LVH) Criteria
• Sokolow + Lyon 
 - S V1 + R V5 or
Left Ventricular ... criteria - S V3 + R avl ... men - S V3 + R avl ... criteria - R avl ... Voltage #Left #Ventricular
Treatment of Stable Wide-Complex Tachycardia
Regular
 • If ventricular tachycardia or uncertain rhythm:
    -
Regular • If ventricular ... preexcitation with AF ... (AF + WPW) ... - Avoid AV nodal ... If polymorphic ventricular
Causes of Tachycardia - Differential Diagnosis Algorithm
Narrow Complex - Regular:
 • Sinus tachycardia
 • Atrial flutter
Atrial flutter • AV ... tachycardia • AV ... • Monomorphic ventricular ... • Polymorphic ventricular ... de pointes • Ventricular
Hallmark ECG features of Ventricular Tachycardia (VT)
AV indicates atrioventricular; LAD, left axis deviation; LBBB, left bundle
ECG features of Ventricular ... Tachycardia (VT) AV ... #Ventricular #Tachycardia