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Premature Ventricular Complexes (PVC's) - Summary Framework

Why PVCs?  Can be the first manifestation of cardiac
Premature Ventricular ... Bundle branch block ... capture of the atria ... arrhythmia • Atrial ... #Premature #Ventricular
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
Classic Digoxin-Associated Arrhythmias
 • Atrial fibrillation with an unusually slow ventricular response
 • Atrial Fibrillation with
unusually slow ventricular ... Complete Heart Block ... Tachycardia with 2:1 AV Block ... Bidirectional Ventricular ... cardiology #ecg #ekg #electrocardiogram
Summary of Heart Blocks
1st Degree Heart Block:
 • Prolonged PR >200ms (5 small squares).
 • Narrow
P and QRS • Atrial ... rate > Ventricular ... Regular ventricular ... infranodal level: Ventricular ... Diagnosis #EKG #electrocardiogram
Tachyarrhythmia Framework - Differential Diagnosis
 • Narrow QRS - Regular Rhythm: Sinus tachycardia, AVNRT, Orthodromic AVRT,
w/ variable AV block ... Regular Rhythm: Ventricular ... bundle branch block ... Rhythm: Polymorphic ventricular ... bundle branch block
Cannon A Waves of Complete Heart Block on Physical Exam
A patient presented to clinic with lightheadedness
Complete Heart Block ... in CVP due to atrial ... occurs during ventricular ... When the atrium ... (2) VT (3) PAC/PVCs
Causes of Palpitations
 • ARRHYTHMiA 
 • SINUS ARRYTHMIA 
 • ATRIAL FIBRILLATION 
 • ATRIAL
ARRYTHMIA • ATRIAL ... FLUTTER • HEART BLOCK ... • PREMATURE VENTRICULAR ... TACHYCARDIA • VENTRICULAR ... SODIUM CHANNEL BLOCKERS
The cardiac cycle describes each heart beat, incorporating relaxation and contraction. Phase one describes diastole and
see above that atrial ... are both low but atrial ... blood when the atria ... at the end of atrial ... Pressures #Phonogram #Electrocardiogram
The 3 Fates of a Premature Atrial Complex
 • PAC can be conducted with normal QRS
of a Premature Atrial ... • PAC can be blocked ... #PACs #cardiology ... diagnosis #ekg #ecg #electrocardiogram ... #premature #atrial
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 ... ecg #diagnosis #electrocardiogram