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Atrioventricular Blocks (AV blocks) - ECG Diagnosis Summary
First Degree AV Block
 • The P wave is
BlockIn sinus ... AV block, the PP ... by a junctional pacemaker ... #AVBlock #cardiology ... electrocardiogram #classification
Third Degree AV Block aka Complete Heart Block
 • In sinus rhythm with complete AV block,
Third Degree AV Block ... BlockIn sinus ... AV block, the PP ... ThirdDegree #3rd #AVBlock ... #Complete #cardiology
Summary of Heart Blocks
1st Degree Heart Block:
 • Prolonged PR >200ms (5 small squares).
 • Narrow
1st Degree Heart Block ... 3rd Degree, Complete ... • Block in AV ... HeartBlocks #Types #Classification ... electrocardiogram #ecg #cardiology
Arrhythmias - Differential Diagnosis Algorithm

Bradyarrhythmia (<60 bpm)
 • Sinus Bradycardia
 • Sick Sinus Syndrome
 • SA
Differential Diagnosis Algorithm ... Syndrome • SA Block ... • AV Block (ISt ... de Pointes if in ... tachyarrhythmias #Cardiology
The 4 Variants of Sinus Arrhythmia
Phasic Sinus Arrhythmia:
 • The rate increases with respiration and decreases
normal • The PP ... arrhythmia is noted in ... presence of AV block ... • The change in ... Sinus #Arrhythmia #cardiology
The 4 Variants of Sinus Arrhythmia
Phasic Sinus Arrhythmia:
 • The rate increases with respiration and decreases
normal • The PP ... arrhythmia is noted in ... presence of AV block ... • The change in ... Sinus #Arrhythmia #cardiology
Causes of ST Segment Elevation - Differential Diagnosis Framework

STEMI:
 • Upsloping convex STE: "Pardee's sign" +
Pardee's sign" + PPD ... Bundle Branch Block ... or in-complete ... bundle-branch block ... differential #diagnosis #cardiology