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Visual Guide to AV Nodal Reentrant Tachycardia (AVNRT) - Pathophysiology
 - Dual AV nodal physiology is
Visual Guide to AV ... Nodal Reentrant ... Pathophysiology - Dual AV ... - In most case ... ECG usually shows
Causes of Tachycardia - Differential Diagnosis Algorithm
Narrow Complex - Regular:
 • Sinus tachycardia
 • Atrial flutter
Causes of Tachycardia ... Atrial flutter • AV ... nodal reentrant ... tachycardia • AV ... reentrant tachycardia
AVJ Impulse/Rhythm Disturbance in one slide
 • Impulse/Rhythms Originating in the AV Junction
 • Reentrant (reciprocal
Originating in the AV ... Junction • Reentrant ... cardiology #diagnosis #ekg ... #ecg #electrocardiogram
Anatomical Differential Diagnosis for Arrhythmias
 • SA node: Sinus bradycardia, Sick Sinus Syndrome (SSS)
 • AV
Syndrome (SSS) • AV ... node: AV re-entrant ... tachycardia (AVRT), AV ... nodal re-entrant ... Differential #Diagnosis #Causes
Eosinophils (Eos) and hypereosinophilia (HE)
Caused by eosinophilopoietic cytokines
Common causes:
 - Drug reaction
 - Helminth infection
 -
cytokines Common causes ... : - Drug reaction ... infection - Allergic reaction ... disease Rare causes ... Lymphoid variant (e.g
Digoxin effect on Electrocardiogram (EKG)
Digoxin is a cardiac glycoside from the foxglove leaf
Mechanism
 - Inhibits Na-K
Electrocardiogram (EKG ... - Decreases AV ... nodal conduction Uses ... Digoxin effect on ECG ... Cardiology #Digitalis #ECG
Approach to ECGs - Tachy/Bradyarrhythmias
Tachyarrhythmias - HR > 100
Wide
  (1) VT - DANGER
  (2)
Approach to ECGs ... rhythms (5) AV ... 200ms from longer pause ... block (lower AV ... bradyarrhythmia #ECG
Diagnostic Framework for Hemolysis - Intravascular vs Extravascular Causes
Intravascular Hemolysis:
 • Mechanical Trauma (Microangiopathic hemolytic anemia):
Extravascular Causes ... Other: Transfusion reaction ... (usually IgG) (e.g ... - Transfusion reaction ... Extravascular #Causes
Classification of Jaundice
Unconjugated hyperbilirubinemia (predominantly indirect bilirubin)
 • Increased bilirubin production (eg, hemolytic anemias, hemolytic reactions,
anemias, hemolytic reactions ... syndrome, drug reactions ... cholestasis, and some cases ... miscellaneous causes ... #differential #causes
Shock - Differential Diagnosis by Classification
Reflex Syncope 
 - Vasovagal syncope
   • Prolonged standing
bradycardia • Sinus pauses ... • AV block ... Medication side effect (e.g ... Medication side effect (e.g ... Classification #Table #Causes