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
(AV blocks) - ECG ... Second Degree AV ... Block • In sinus ... #electrocardiogram ... #classification
Premature atrial complex (PAC) - ECG Recognition
 • Prematurity and altered P wave morphology.
 • P
(PAC) - ECG Recognition ... look like the sinus ... interval of > 0.12 seconds ... which will be 0.12 seconds ... #ecg #electrocardiogram
Second degree AV Block type II (aka Mobitz II)
 • There is constant PR interval (normal
Second degree AV ... constant PR interval (normal ... • The QRS complex ... #Second #Degree ... #ekg #electrocardiogram
The 4 Variants of Sinus Arrhythmia
Phasic Sinus Arrhythmia:
 • The rate increases with respiration and decreases
PR interval are normal ... encompassing a QRS complex ... intervening QRS complex ... presence of AV block ... #ecg #electrocardiogram
Second Degree AV Block Type I aka Mobitz I / Wenckebach 
 • Normal P waves.
Second Degree AV ... Block Type I aka ... Wenckebach • Normal ... The PRI (may be normal ... #ekg #electrocardiogram
The 3 Fates of a Premature Atrial Complex
 • PAC can be conducted with normal QRS
Premature Atrial Complex ... conducted with normal ... • PAC can be blocked ... #ecg #electrocardiogram ... premature #atrial #complexes
Ventriculophasic Sinus Arrhythmia - ECG Diagnosis
 • The P to P interval encompassing a QRS complex
Arrhythmia - ECG ... encompassing a QRS complex ... intervening QRS complex ... presence of AV block ... #ecg #electrocardiogram
Second degree AV Block 2:1
 • During sinus rhythm, 2 to 1 AV block manifest as
Second degree AV ... sinus rhythm, 2 ... AVBlock #2to1 #ecg ... #diagnosis #ekg ... #electrocardiogram
Paroxysmal AV Block on ECG
 - Characterized by an abrupt and persistent AV block in the
on ECG - Characterized ... presence of otherwise normal ... or slowing of sinus ... diagnosis #cardiology #ekg ... #ecg #electrocardiogram
The 4 Variants of Sinus Arrhythmia
Phasic Sinus Arrhythmia:
 • The rate increases with respiration and decreases
PR interval are normal ... encompassing a QRS complex ... intervening QRS complex ... presence of AV block ... #ecg #electrocardiogram