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Sinus pause/arrest vs Sinoatrial Block

#cardiology #diagnosis #ekg #ecg #electrocardiogram #sinuspause #sinoatrialblock
Sinus pause/arrest ... vs Sinoatrial Block ... #cardiology ... diagnosis #ekg #ecg #electrocardiogram
Causes of Palpitations
 • ARRHYTHMiA 
 • SINUS ARRYTHMIA 
 • ATRIAL FIBRILLATION 
 • ATRIAL
Causes of Palpitations ... ARRHYTHMiA • SINUS ... FLUTTER • HEART BLOCK ... • PREMATURE VENTRICULAR ... NON-ARRHYTHMIC • SINUS
Approach to ECGs - Tachy/Bradyarrhythmias
Tachyarrhythmias - HR > 100
Wide
  (1) VT - DANGER
  (2)
DANGER (2) Sinus ... 200ms from longer pause ... - ventricular pacemaker ... EKG #diagnosis #electrocardiogram ... #cardiology #differential
Hallmark ECG features of Ventricular Tachycardia (VT)
AV indicates atrioventricular; LAD, left axis deviation; LBBB, left bundle
ECG features of Ventricular ... bundle branch block ... #Ventricular #Tachycardia ... VTach #ECG #EKG #Electrocardiogram ... #Diagnosis #Cardiology
Arrhythmias - Differential Diagnosis Algorithm

Bradyarrhythmia (<60 bpm)
 • Sinus Bradycardia
 • Sick Sinus Syndrome
 • SA
(<60 bpm) • Sinus ... Escape Rhythm • Ventricular ... • Premature ventricular ... tachyarrhythmias #Cardiology ... Diagnosis #Algorithm #causes
Classic Digoxin-Associated Arrhythmias
 • Atrial fibrillation with an unusually slow ventricular response
 • Atrial Fibrillation with
unusually slow ventricular ... Complete Heart Block ... Bidirectional Ventricular ... Arrhythmias #diagnosis #cardiology ... #ecg #ekg #electrocardiogram
Anatomical Differential Diagnosis for Arrhythmias
 • SA node: Sinus bradycardia, Sick Sinus Syndrome (SSS)
 • AV
Arrhythmias • SA node: Sinus ... bradycardia, Sick Sinus ... ) • SA node: Sinus ... Differential #Diagnosis #Causes ... #cardiology
Hypothermia on EKG
 • J (Osborn) waves
 • PR, QRS, and QT prolongation
 • Various bradyarrythmias
bradyarrythmias (e.g. sinus ... fib with slow ventricular ... waves #EKG #ECG #electrocardiogram ... #cardiology #diagnosis
Non-lschemic Causes of Cardiogenic Shock:

Beta-Blockers, Calcium Channel Blockers, Digoxin 

Myocarditis 

Cardiomyopathies (sarcoidosis, amyloidosis, Takatsubo, 
hemochromatosis) 

Valvular
Non-lschemic Causes ... Tachycardia, Ventricular ... nodal dysfunction, Sinus ... #Nonlschemic #Causes ... Differential #Diagnosis #Cardiology
Tachyarrhythmia Framework - Differential Diagnosis
 • Narrow QRS - Regular Rhythm: Sinus tachycardia, AVNRT, Orthodromic AVRT,
Regular Rhythm: Sinus ... w/ variable AV block ... Regular Rhythm: Ventricular ... Rhythm: Polymorphic ventricular ... Differential #Diagnosis #cardiology