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The 4 Variants of Sinus Arrhythmia
Phasic Sinus Arrhythmia:
 • The rate increases with respiration and decreases
The heart rate change ... the presence of AV ... Pacemaker: • The change ... Sinus #Arrhythmia #cardiology ... diagnosis #ekg #ecg #electrocardiogram
The 4 Variants of Sinus Arrhythmia
Phasic Sinus Arrhythmia:
 • The rate increases with respiration and decreases
The heart rate change ... the presence of AV ... Pacemaker: • The change ... Sinus #Arrhythmia #cardiology ... diagnosis #ekg #ecg #electrocardiogram
EKG Interpretation Cheat Sheet
1) Rate 
 - Regular - Count-Off 
 - Irregular - Count number
interval < 120 ms = AV ... progression ST ... Invert III normal variant ... Interpretation #ECG #Electrocardiogram ... #cardiology #diagnosis
Causes of ST Segment Elevation - Differential Diagnosis Framework

STEMI:
 • Upsloping convex STE: "Pardee's sign" +
Disorders: • Hyperkalemia ... • Hypercalcemia ... Elevation of Normal Variant ... dissection • Sodium-channel ... #ecg #ekg #electrocardiogram
Multifocal Atrial Rhythm vs Wandering Atrial Pacemaker
Mutifocal Atrial Rhythm / Multifocal Atrial Tachycardia:
Belong to a group
of a variable P-wave ... Atrial Pacemaker: VARIANT ... terminalis) or in AV ... The change occurs ... #ekg #ecg #electrocardiogram