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 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 ... Wandering Atrial Pacemaker ... cardiology #diagnosis #ekg
Atrioventricular Blocks (AV blocks) - ECG Diagnosis Summary
First Degree AV Block
 • The P wave is
(AV blocks) - ECG ... clinically concerning variant ... Block • In sinus ... by a junctional pacemaker ... an infra-Hisian pacemaker
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 ... Wandering Atrial Pacemaker ... cardiology #diagnosis #ekg
Premature atrial complex (PAC) - ECG Recognition
 • Prematurity and altered P wave morphology.
 • P
Premature atrial complex ... look like the sinus ... interval of > 0.12 seconds ... which will be 0.12 seconds ... cardiology #diagnosis #ekg
A Summary slide of Sinoatrial Rhythms 
 • Sinus Rhythm
 • Sinus Arrhythmia
Rhythm • Sinus ... Wandering Atrial Pacemaker ... Premature Atrial Complexes ... • Sinoatrial Blocks ... diagnosis #cardiology #ekg
Wandering atrial pacemaker - ECG Diagnosis
 • The change in P wave contour is gradual
 •
Wandering atrial pacemaker ... shifts back to the sinus ... • Variant of ... sinus arrhythmia ... cardiology #diagnosis #ekg
Second degree AV Block type II (aka Mobitz II)
 • There is constant PR interval (normal
Second degree AV ... Block type II ( ... • The QRS complex ... #Second #Degree ... #ekg #electrocardiogram
Third Degree AV Block aka Complete Heart Block
 • In sinus rhythm with complete AV block,
Third Degree AV Block ... Block • In sinus ... by a junctional pacemaker ... an infra-Hisian pacemaker ... #cardiology #ekg
High-grade AV Block aka Advanced AV Block
 • During sinus rhythm, when 2 or more P
• During sinus ... clinically concerning variant ... may progress to complete ... diagnosis #cardiology #ecg ... #ekg #electrocardiogram
Second degree AV Block 2:1
 • During sinus rhythm, 2 to 1 AV block manifest as
Second degree AV ... sinus rhythm, 2 ... #Second #degree ... AVBlock #2to1 #ecg ... #diagnosis #ekg