Dr. Arnel Carmona @ecgrhythms
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Internal Medicine (IMG) , lover of the squiggly lines and all simplistic learning https://twitter.com/ecgrhythms - blogger @ - https://www.ekgrhythm.com/
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The 3 Fates of a Premature Atrial Complex
 • PAC can be conducted with normal QRS
Premature Atrial Complex ... • PAC can be ... • PAC can be ... blocked or non-conducted ... premature #atrial #complexes
Premature atrial complex (PAC) - ECG Recognition
 • Prematurity and altered P wave morphology.
 • P
Premature atrial complex ... (PAC) - ECG Recognition ... • A PAC will ... premature junctional complex ... #atrial #complexes
Atrioventricular Blocks (AV blocks) - ECG Diagnosis Summary
First Degree AV Block
 • The P wave is
• The QRS complex ... may progress to complete ... aka Complete Heart ... rhythm with complete ... PAC or PVC, acceleration
Third Degree AV Block aka Complete Heart Block
 • In sinus rhythm with complete AV block,
Third Degree AV Block ... aka Complete Heart ... rhythm with complete ... #ThirdDegree #3rd ... #AVBlock #Complete
Premature Atrial Complexes and Bradycardia

ECG Tip: If there is a sudden onset of (V) bradycardia, check
Premature Atrial Complexes ... premature atrial complexes ... #PACs #bradycardia ... Premature #Atrial #Complexes
Ventricular Tachycardia in Wide Complex Tachycardia - Telemetry Diagnosis
 • Lead V1 - LBBB Criteria
 •
Tachycardia in Wide Complex ... aVR - Vereckie Algorithm ... #Algorithm #
Second degree AV Block type II (aka Mobitz II)
 • There is constant PR interval (normal
Second degree AV Block ... location of the block ... • The QRS complex ... location of the block
The 4 Variants of Sinus Arrhythmia
Phasic Sinus Arrhythmia:
 • The rate increases with respiration and decreases
encompassing a QRS complex ... intervening QRS complex ... presence of AV block
A Summary slide of Sinoatrial Rhythms 
 • Sinus Rhythm
 • Sinus Arrhythmia
Premature Atrial Complexes ... • Sinoatrial Blocks
High-grade AV Block aka Advanced AV Block
 • During sinus rhythm, when 2 or more P
High-grade AV Block ... aka Advanced AV Block ... high-grade AV block ... may progress to complete ... heart block.