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
Atrioventricular Blocks ... (AV blocks) - ECG ... First Degree AV Block ... bundle branch block ... There is "group-beating
Second Degree AV Block Type I aka Mobitz I / Wenckebach 
 • Normal P waves.
Second Degree AV Block ... There is "group-beating
Second degree AV Block type II (aka Mobitz II)
 • There is constant PR interval (normal
Second degree AV Block ... location of the block ... location of the block
Sinus pause/arrest vs Sinoatrial Block

#cardiology #diagnosis #ekg #ecg #electrocardiogram #sinuspause #sinoatrialblock
vs Sinoatrial Block
The 3 Fates of a Premature Atrial Complex
 • PAC can be conducted with normal QRS
• PAC can be blocked
The Sinoatrial Blocks

#cardiology #diagnosis #ekg #ecg #electrocardiogram #sinoatrial #blocks #heartblocks #comparison
The Sinoatrial Blocks ... electrocardiogram #sinoatrial #blocks
The 4 Variants of Sinus Arrhythmia
Phasic Sinus Arrhythmia:
 • The rate increases with respiration and decreases
presence of AV block
Paroxysmal AV Block on ECG
 - Characterized by an abrupt and persistent AV block in the
Paroxysmal AV Block ... persistent AV block ... : conducted or blocked ... rhythm - Once the block ... initiated, the block
Paroxysmal AV Block aka Ventricular Standstill
 • Abrupt and persistent AV block ( multiple P waves
Paroxysmal AV Block ... persistent AV block ... a conducted or blocked ... • 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 ... rhythm, 2 to 1 AV block ... second degree AV block ... • A 2:1 AV block ... nature of a AV block