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Premature Ventricular Complexes (PVC's) - Summary Framework

Why PVCs?  Can be the first manifestation of cardiac
Complexes (PVC's ... Bundle branch block ... Presyncope PVC ... #Complexes #PVCs ... #PVC #diagnosis
Atrioventricular Blocks (AV blocks) - ECG Diagnosis Summary
First Degree AV Block
 • The P wave is
• The ventricular ... aka Ventricular ... PAC or PVC, acceleration ... escape, usually ventricular ... #AVBlock #cardiology
Paroxysmal AV Block aka Ventricular Standstill
 • Abrupt and persistent AV block ( multiple P waves
Paroxysmal AV Block ... persistent AV block ... PAC or PVC, acceleration ... • Once the block ... initiated, the block
Paroxysmal AV Block on ECG
 - Characterized by an abrupt and persistent AV block in the
Paroxysmal AV Block ... persistent AV block ... PAC or PVC, acceleration ... escape, usually ventricular ... #Paroxysmal #AVBlock
Cannon A Waves of Complete Heart Block on Physical Exam
A patient presented to clinic with lightheadedness
Heart Block on ... occurs during ventricular ... heart block (2) ... VT (3) PAC/PVCs ... heart block.
Anatomical Differential Diagnosis for Arrhythmias
 • SA node: Sinus bradycardia, Sick Sinus Syndrome (SSS)
 • AV
rhythm, Conduction blocks ... system: Conduction blocks ... • Ventricles: Ventricular ... Contractions (PACs ... Contractions (PVC
Atrioventricular (AV) Blocks

First Degree AV Block - "If your R is far from your P than
First Degree AV Block ... • Site of Block ... until a P wave (ventricular ... • Site of Block ... Heart Block
Summary of Heart Blocks
1st Degree Heart Block:
 • Prolonged PR >200ms (5 small squares).
 • Narrow
1st Degree Heart Block ... Mobitz I Heart Block ... Pacemaker 3rd Degree, Complete ... Heart Block: ... • Block in AV
The 3 Fates of a Premature Atrial Complex
 • PAC can be conducted with normal QRS
Premature Atrial Complex ... • PAC can be ... blocked or non-conducted ... #PACs #cardiology ... premature #atrial #complexes
Classic Digoxin-Associated Arrhythmias
 • Atrial fibrillation with an unusually slow ventricular response
 • Atrial Fibrillation with
unusually slow ventricular ... Fibrillation with Complete ... Heart Block and ... Tachycardia with 2:1 AV Block ... Bidirectional Ventricular