12 results
Supraventricular Tachycardias - Pathophysiology
Conduction pathways through SA Node, Atrium, AV Node, Bundle of His, and Ventricle
Pathophysiology Conduction ... pathways through ... SA Node, Atrium ... Pathophysiology #SVT ... #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 ... with conduction ... with conduction ... Differential #Diagnosis #Algorithm
Cardiac conducting system 
 - Sinoatrial (SA) node normally generates the action potential, i.e. the electrical
Cardiac conducting ... - Sinoatrial (SA ... - The SA node ... through internodal pathways ... #Pathways
Anatomical Differential Diagnosis for Arrhythmias
 • SA node: Sinus bradycardia, Sick Sinus Syndrome (SSS)
 • AV
Arrhythmias • SA ... escape rhythm, Conduction ... His-purkinje system: Conduction ... > 100 bpm) • SA ... , Polymorphic VT
Causes of Tachycardia - Differential Diagnosis Algorithm
Narrow Complex - Regular:
 • Sinus tachycardia
 • Atrial flutter
Differential Diagnosis Algorithm ... with variable conduction ... QRS • Regular SVT ... • Irregular SVT ... Differential #Diagnosis #Algorithm
Wide Complex Tachycardia - ECG Definition and Causes
 • Wide Complex Tachycardia (WCT) is a cardiac
Ventricular Tachycardia (VT ... Supraventricular tachycardia (SVT ... anterograde accessory pathway ... conduction (~1-
Visual Guide to AV Nodal Reentrant Tachycardia (AVNRT) - Pathophysiology
 - Dual AV nodal physiology is
- Normal conduction ... place via fast pathway ... from the slow pathway ... time the fast pathway ... Pathophysiology #cardiology #SVT
Arrhythmias - Differential Diagnosis Algorithm
May present as: palpitations, dizziness, syncope, chest discomfort
Cardiac Causes:
 - Structural
Differential Diagnosis Algorithm ... - Electrical Conduction ... • Accessory pathway ... Differential #Diagnosis #Algorithm
Syncope - Differential Diagnosis Algorithm
Neurocardiogenic:
 • Vasovagal
 • Orthostatic Hypotension
 • Autonomic Neuropathy
 • Situational (micturition,
Differential Diagnosis Algorithm ... Tachyarrhythmia: • VT ... Sinus Syndrome (SA ... Differential #Diagnosis #Algorithm