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Bradycardia - Differential Diagnosis Framework and Management
Narrow Complex Bradycardia:
 • Regular: Sinus Bradycardia, AFib w/ AV
w/ AV Block, Atrial ... Tachy w/ AV Block ... AV Block, Mobitz ... II AV Block Wide ... SVT WI Wide QRS, Ventricular
Approach to ECGs - Tachy/Bradyarrhythmias
Tachyarrhythmias - HR > 100
Wide
  (1) VT - DANGER
  (2)
abberancy - N B Afib ... - w/ variable block ... block 1º - long ... block (lower AV ... block - ventricular
Atrioventricular Blocks (AV blocks) - ECG Diagnosis Summary
First Degree AV Block
 • The P wave is
Diagnosis Summary ... High-grade AV Block ... • This is a clinically ... Paroxysmal AV Block ... #electrocardiogram
Atrioventricular (AV) Blocks

First Degree AV Block - "If your R is far from your P than
Degree AV Block ... Block - Mobitz ... until a P wave (ventricular ... cardiology #ecg #ekg #diagnosis ... #electrocardiogram
Hallmark ECG features of Ventricular Tachycardia (VT)
AV indicates atrioventricular; LAD, left axis deviation; LBBB, left bundle
Tachycardia (VT) AV ... bundle branch block ... bundle branch block ... VTach #ECG #EKG #Electrocardiogram ... #Diagnosis #Cardiology
Classic Digoxin-Associated Arrhythmias
 • Atrial fibrillation with an unusually slow ventricular response
 • Atrial Fibrillation with
Complete Heart Block ... Tachycardia with 2:1 AV ... Block • Bidirectional ... #Arrhythmias #diagnosis ... cardiology #ecg #ekg #electrocardiogram
Paroxysmal AV Block aka Ventricular Standstill
 • Abrupt and persistent AV block ( multiple P waves
Paroxysmal AV Block ... block ( multiple ... • Once the block ... #diagnosis #cardiology ... #ecg #ekg #electrocardiogram
Second degree AV Block type II (aka Mobitz II)
 • There is constant PR interval (normal
Block type II ( ... location of the block ... location of the block ... Second #Degree #AVBlock ... MobitzII #Type2 #diagnosis
Summary of Heart Blocks
1st Degree Heart Block:
 • Prolonged PR >200ms (5 small squares).
 • Narrow
1st Degree Heart Block ... Mobitz I Heart Block ... • Block in AV ... degrees #summary #Diagnosis ... #EKG #electrocardiogram
Paroxysmal AV Block on ECG
 - Characterized by an abrupt and persistent AV block in the
Paroxysmal AV Block ... escape, usually ventricular ... #Paroxysmal #AVBlock ... #diagnosis #cardiology ... #clinical