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Sinus pause/arrest vs Sinoatrial Block

#cardiology #diagnosis #ekg #ecg #electrocardiogram #sinuspause #sinoatrialblock
Sinus pause/arrest ... vs Sinoatrial Block ... diagnosis #ekg #ecg #electrocardiogram
Approach to ECGs - Tachy/Bradyarrhythmias
Tachyarrhythmias - HR > 100
Wide
  (1) VT - DANGER
  (2)
DANGER (2) Sinus ... Regular (1) Sinus ... HR < 60 (1) Sinus ... EKG #diagnosis #electrocardiogram ... #cardiology #differential
Bradycardia - Differential Diagnosis Framework and Management
Narrow Complex Bradycardia:
 • Regular: Sinus Bradycardia, AFib w/ AV
Bradycardia - Differential ... : • Regular: Sinus ... • Irregular: Sinus ... Arrhythmia, Sinus ... #Bradycardia #Differential
The 4 Variants of Sinus Arrhythmia
Phasic Sinus Arrhythmia:
 • The rate increases with respiration and decreases
4 Variants of Sinus ... Arrhythmia Phasic Sinus ... Non-phasic Sinus ... presence of AV block ... diagnosis #ekg #ecg #electrocardiogram
Syncope - Differential Diagnosis Framework
Reflex Syncope:
• Vasovagal: Prolonged standing, Stress, Pain
• Situational: Coughing, Sneezing, Micturition, Defecation,
Syncope - Differential ... Bradyarrhythmias: Sinus ... bradycardia, Sinus ... pauses, AV block ... SCVMCMed #Syncope #Differential
Tachyarrhythmia Framework - Differential Diagnosis
 • Narrow QRS - Regular Rhythm: Sinus tachycardia, AVNRT, Orthodromic AVRT,
Tachyarrhythmia Framework - Differential ... Regular Rhythm: Sinus ... w/ variable AV block ... bundle branch block ... #tachycardia #Differential
Arrhythmias - Differential Diagnosis Algorithm

Bradyarrhythmia (<60 bpm)
 • Sinus Bradycardia
 • Sick Sinus Syndrome
 • SA
Arrhythmias - Differential ... (<60 bpm) • Sinus ... Bradycardia • Sick Sinus ... • AV Block (ISt ... tachyarrhythmias #Cardiology #Differential
Syncope - Differential Diagnosis
The percentage of syncopal events secondary to arrhythmias or structural disease is generally
Syncope - Differential ... Vasovagal • Carotid sinus ... • Brady (Sick sinus ... , AV block) • ... 2% #syncope #differential
Supraventricular Tachycardia (SVT) - Differential Diagnosis Framework and Management

Regular SVT: Sinus Tachycardia, AVNRT, AVRT, Atrial Flutter,
Tachycardia (SVT) - Differential ... Regular SVT: Sinus ... Fibrillation, MAT, Sinus ... AFIb w/ variable block ... Tachycardia #SVT #Differential
Shock - Differential Diagnosis by Classification
Reflex Syncope 
 - Vasovagal syncope
   • Prolonged standing
Shock - Differential ... Bradyarrhythmias • Sinus ... bradycardia • Sinus ... pauses • AV block ... #Syncope #Differential