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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Premature atrial complex (PAC) - ECG Recognition
 • Prematurity and altered P wave morphology.
 • P
Premature atrial complex ... (PAC) - ECG Recognition ... interval of > 0.12 seconds ... which will be 0.12 seconds ... diagnosis #ekg #ecg #electrocardiogram
The 3 Fates of a Premature Atrial Complex
 • PAC can be conducted with normal QRS
Premature Atrial Complex ... • PAC can be ... blocked or non-conducted ... diagnosis #ekg #ecg #electrocardiogram ... premature #atrial #complexes
Atrioventricular Blocks (AV blocks) - ECG Diagnosis Summary
First Degree AV Block
 • The P wave is
Second Degree AV ... usually on the second ... Second degree AV ... PAC or PVC, acceleration ... ecg #diagnosis #electrocardiogram
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 ... cardiology #ecg #ekg #electrocardiogram
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 ... cardiology #ecg #ekg #electrocardiogram
Premature Atrial Complexes and Bradycardia

ECG Tip: If there is a sudden onset of (V) bradycardia, check
Premature Atrial Complexes ... premature atrial complexes ... #PACs #bradycardia ... Premature #Atrial #Complexes ... #electrocardiogram
Second degree AV Block 2:1
 • During sinus rhythm, 2 to 1 AV block manifest as
Second degree AV ... is a subtype of second ... could either be second ... #Second #degree ... diagnosis #ekg #electrocardiogram
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 ... diagnosis #ekg #ecg #electrocardiogram
Paroxysmal AV Block on ECG
 - Characterized by an abrupt and persistent AV block in the
Paroxysmal AV Block ... persistent AV block ... : conducted or blocked ... PAC or PVC, acceleration ... cardiology #ekg #ecg #electrocardiogram
Paroxysmal AV Block aka Ventricular Standstill
 • Abrupt and persistent AV block ( multiple P waves
Paroxysmal AV Block ... persistent AV block ... PAC or PVC, acceleration ... • Once the block ... cardiology #ecg #ekg #electrocardiogram