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
Diagnosis Summary ... Second Degree AV ... Second degree AV ... Block • In sinus ... cardiology #ekg #ecg #diagnosis
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
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 ... MobitzII #Type2 #diagnosis
The 4 Variants of Sinus Arrhythmia
Phasic Sinus Arrhythmia:
 • The rate increases with respiration and decreases
4 Variants of Sinus ... encompassing a QRS complex ... intervening QRS complex ... presence of AV block ... Arrhythmia #cardiology #diagnosis
Sinus pause/arrest vs Sinoatrial Block

#cardiology #diagnosis #ekg #ecg #electrocardiogram #sinuspause #sinoatrialblock
Sinus pause/arrest ... vs Sinoatrial Block ... #cardiology #diagnosis
Second degree AV Block 2:1
 • During sinus rhythm, 2 to 1 AV block manifest as
Second degree AV ... sinus rhythm, 2 ... is a subtype of second ... #Second #degree ... AVBlock #2to1 #ecg #diagnosis
The 3 Fates of a Premature Atrial Complex
 • PAC can be conducted with normal QRS
Premature Atrial Complex ... • PAC can be blocked ... PACs #cardiology #diagnosis ... premature #atrial #complexes
Second Degree AV Block Type I aka Mobitz I / Wenckebach 
 • Normal P waves.
Second Degree AV ... Block Type I aka ... usually on the second ... #Second #Degree ... Type1 #Wenckebach #diagnosis
The 4 Variants of Sinus Arrhythmia
Phasic Sinus Arrhythmia:
 • The rate increases with respiration and decreases
4 Variants of Sinus ... encompassing a QRS complex ... intervening QRS complex ... presence of AV block ... Arrhythmia #cardiology #diagnosis
A Summary slide of Sinoatrial Rhythms 
 • Sinus Rhythm
 • Sinus Arrhythmia
Sinoatrial Rhythms • Sinus ... Rhythm • Sinus ... Premature Atrial Complexes ... • Sinoatrial Blocks ... #differential #diagnosis