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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Atrioventricular Blocks (AV blocks) - ECG Diagnosis Summary
First Degree AV Block
 • The P wave is
• The QRS complex ... • During sinus rhythm ... rhythm with complete ... slowing of sinus rhythm ... #AVBlock #cardiology
A Summary slide of Sinoatrial Rhythms 
 • Sinus Rhythm
 • Sinus Arrhythmia
of Sinoatrial Rhythms ... • Sinus Rhythm ... Premature Atrial Complexes ... • Sinoatrial Blocks ... #differential #
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 ... Second #Degree #AVBlock
High-grade AV Block aka Advanced AV Block
 • During sinus rhythm, when 2 or more P
High-grade AV Block ... aka Advanced AV Block ... • During sinus rhythm ... may progress to complete ... #Highgrade #AVBlock
Paroxysmal AV Block on ECG
 - Characterized by an abrupt and persistent AV block in the
Paroxysmal AV Block ... persistent AV block ... slowing of sinus rhythm ... - Once the block ... initiated, the block
Third Degree AV Block aka Complete Heart Block
 • In sinus rhythm with complete AV block,
Third Degree AV Block ... aka Complete Heart ... Block • In sinus ... rhythm with complete ... AV block, the PP
Paroxysmal AV Block aka Ventricular Standstill
 • Abrupt and persistent AV block ( multiple P waves
Paroxysmal AV Block ... persistent AV block ... slowing of sinus rhythm ... • Once the block ... initiated, the block
Second degree AV Block 2:1
 • During sinus rhythm, 2 to 1 AV block manifest as
Second degree AV Block ... • During sinus rhythm ... , 2 to 1 AV block ... • A 2:1 AV block ... #degree #2nd #AVBlock
The 4 Variants of Sinus Arrhythmia
Phasic Sinus Arrhythmia:
 • The rate increases with respiration and decreases
is gradual and rhythmic ... encompassing a QRS complex ... intervening QRS complex ... presence of AV block
Wide Complex Tachycardia - ECG Definition and Causes
 • Wide Complex Tachycardia (WCT) is a cardiac
Wide Complex Tachycardia ... Causes • Wide Complex ... ) is a cardiac rhythm ... electrocardiogram #definition #differential