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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) • ... differential #diagnosis #causes
Shock - Differential Diagnosis by Classification
Reflex Syncope 
 - Vasovagal syncope
   • Prolonged standing
Bradyarrhythmias • Sinus ... bradycardia • Sinus ... pauses • AV ... block - Tachyarrhythmias ... Classification #Table #Causes
Syncope - Differential Diagnosis Framework
Reflex Syncope:
• Vasovagal: Prolonged standing, Stress, Pain
• Situational: Coughing, Sneezing, Micturition, Defecation,
Syncope - Differential ... Post-exercise • Carotid sinus ... Bradyarrhythmias: Sinus ... bradycardia, Sinus ... pauses, AV block
Differences between Mobitz Type I and Type II Second-Degree AV Block

#Mobitz #Wenckebach #TypeI #TypeII #Type1 #Type2
Second-Degree AV Block ... #Type1 #Type2 #AVBlock ... SecondDegree #Cardiology #Comparison ... #Electrocardiogram
Sinus pause/arrest vs Sinoatrial Block

#cardiology #diagnosis #ekg #ecg #electrocardiogram #sinuspause #sinoatrialblock
Sinus pause/arrest ... vs Sinoatrial Block ... diagnosis #ekg #ecg #electrocardiogram
Pacemaker Placement Indications
Class I:
 • Third degree block
 • Advanced 2nd degree block
 • Symptomatic Mobitz
with syncope • ... RBBB/LBBB with syncope ... Class Ill: • Syncope ... unclear origin • Sinus ... • Reversible causes
Syncope is a sudden, transient loss of consciousness, which is thought to be secondary to cerebral
frequently benign causes ... responses or carotid sinus ... life-threatening causes ... In many cases, syncope ... depends on the cause
Bradycardias Comparison Table
 - SINUS BRADYCARDIA 
 - JUNCTIONAL BRADYCARDIA 
 - 1st DEGREE AV BLOCK
Bradycardias Comparison ... Table - SINUS ... 1st DEGREE AV BLOCK ... 2nd DEGREE AV BLOCK ... Bradycardia #Common #Comparison
The 4 Variants of Sinus Arrhythmia
Phasic Sinus Arrhythmia:
 • The rate increases with respiration and decreases
4 Variants of Sinus ... Arrhythmia Phasic Sinus ... presence of AV block ... diagnosis #ekg #ecg #electrocardiogram ... variants #clinical #comparison
Syncope - Differential Diagnosis Algorithm
Neurocardiogenic:
 • Vasovagal
 • Orthostatic Hypotension
 • Autonomic Neuropathy
 • Situational (micturition,
Syncope - Differential ... : • Sick Sinus ... /3rd degree AV Block ... Tachy-Brady Syndrome #Syncope ... Diagnosis #Algorithm #causes