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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Normal Sinus Rhythm - ECG Diagnosis
Normal sinus rhythm (NSR) is an impulse that originates in the
Normal Sinus Rhythm ... Diagnosis Normal sinus ... originates in the sinus ... • inverted in aVR ... leads III and aVL
Premature atrial complex (PAC) - ECG Recognition
 • Prematurity and altered P wave morphology.
 • P
look like the sinus ... in II, Ill and aVF ... interval of > 0.12 seconds ... which will be 0.12 seconds
The 4 Variants of Sinus Arrhythmia
Phasic Sinus Arrhythmia:
 • The rate increases with respiration and decreases
4 Variants of Sinus ... Arrhythmia Phasic Sinus ... increases (II, Ill and aVF ... Non-phasic Sinus ... the presence of AV
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 ... Block • During sinus ... or slowing of sinus
Supraventricular Tachycardias - Pathophysiology
Conduction pathways through SA Node, Atrium, AV Node, Bundle of His, and Ventricle
Node, Atrium, AV ... Ventricle • Sinus ... Fibrillation • AV ... Tachycardia • AV
Ventricular Tachycardia in Wide Complex Tachycardia - Telemetry Diagnosis
 • Lead V1 - LBBB Criteria
 •
RWPT) • Lead aVR ... - Vereckie Algorithm ... #Algorithm #
Second degree AV Block type II (aka Mobitz II)
 • There is constant PR interval (normal
Second degree AV ... of the block (AV ... #Second #Degree
Second Degree AV Block Type I aka Mobitz I / Wenckebach 
 • Normal P waves.
Second Degree AV ... usually on the second ... #Second #Degree
Vereckie Algorithm - Lead aVR - Ventricular Tachycardia - Telemetry Diagnosis
WCT is VT IF:
 • Initial
Vereckie Algorithm ... - Lead aVR - Ventricular ... #Vereckie #Algorithm ... Tachycardia #WCT #VTach #avr
Second degree AV Block 2:1
 • During sinus rhythm, 2 to 1 AV block manifest as
Second degree AV ... 2:1 • During sinus ... is a subtype of second ... could either be second ... #Second #degree