8 results
Supraventricular Tachycardias - Pathophysiology
Conduction pathways through SA Node, Atrium, AV Node, Bundle of His, and Ventricle
Pathophysiology Conduction pathways ... through SA Node ... Pathophysiology #SVT ... cardiology #conduction #pathways ... #avnrt
Stimulated
SA node
AV node -
Un-stimulated
#PQ
(mV) 0
ECG (lead II)
QRS
#QRS
#SA node
#AV node
#Bundle of His
Bundle branches
#Purkinje fibers
#QRS
#ST
Stimulated SA node ... Un-stimulated #PQ ... ) QRS #QRS #SA ... fibers #QRS #ST
Arrhythmias - Differential Diagnosis Algorithm

Bradyarrhythmia (<60 bpm)
 • Sinus Bradycardia
 • Sick Sinus Syndrome
 • SA
Differential Diagnosis Algorithm ... Sinus Syndrome • SA ... Aflutter • AVNRT ... • AVRT (ie ... Differential #Diagnosis #Algorithm
Anatomical Differential Diagnosis for Arrhythmias
 • SA node: Sinus bradycardia, Sick Sinus Syndrome (SSS)
 • AV
Arrhythmias • SA ... > 100 bpm) • SA ... re-entrant tachycardia (AVRT ... re-entrant tachycardia (AVNRT ... , Polymorphic VT
Syncope - Differential Diagnosis Algorithm
Neurocardiogenic:
 • Vasovagal
 • Orthostatic Hypotension
 • Autonomic Neuropathy
 • Situational (micturition,
Differential Diagnosis Algorithm ... Tachyarrhythmia: • VT ... AFlutter • AVNRT ... Sinus Syndrome (SA ... Differential #Diagnosis #Algorithm
Visual Guide to AV Nodal Reentrant Tachycardia (AVNRT) - Pathophysiology
 - Dual AV nodal physiology is
Reentrant Tachycardia (AVNRT ... substrate for AVNRT ... trigger the typical AVNRT ... what known as AVNRT ... Pathophysiology #cardiology #SVT
Tachycardia - Differential Diagnosis and Management - Narrow vs Wide, Regular vs Irregular
Narrow - Regular:
Use P
deflection not AVRT ... /AVNRT. ... • SVT. 140-280 ... • DDx: SVT + ... #wide #narrow #algorithm
Essential Thrombocythemia (ET)
ET is a chronic myeloproliferative neoplasm. Most cases are related to mutations that affect
JAK-STAT signaling pathway ... MI, stroke, DVT/ ... • Treatment algorithms