148 results
Arrhythmias - Differential Diagnosis Algorithm

Bradyarrhythmia (<60 bpm)
 • Sinus Bradycardia
 • Sick Sinus Syndrome
 • SA
• Sick Sinus Syndrome ... • Sinus Tachycardia ... Ectopic Atrial Tachycardia ... Aflutter • AVNRT ... • AVRT (ie
Palpitations - Differential Diagnosis Framework

What?
• It is an unpleasant awareness or sensation that the heart is
syndrome (sick ... sinus syndrome) ... Arrhythmias: • SVT ... vagal maneuvers: SVT-AVNRT ... bending over: AVNRT
Tachycardia - Differential Diagnosis Framework
Narrow-Complex:
 • Regular: Sinus Tachycardia, Junctional Tachycardia, Atrial Tachycardia, Atrial Flutter, AVRT
WPW), AVnRT (ie ... SVT) • Irregular ... , Antidromic AVRT ... , SVT w/aberrancy ... Any irregular SVT
Narrow Complex Tachycardias (Simplified)

Irregular Narrow Complex Tachycardia:
 1. Atrial fibrillation
	- Usually the correct answer
 2. Multifocal
Narrow Complex Tachycardias ... Sinus tachycardia ... "PSVT" (atrioventricular ... retrograde) - AVNRT ... , AVRT, Junctional
Supraventricular Tachycardias - Pathophysiology
Conduction pathways through SA Node, Atrium, AV Node, Bundle of His, and Ventricle
Supraventricular Tachycardias ... • Atrial Tachycardia ... Nodal Reentry Tachycardia ... Pathophysiology #SVT ... conduction #pathways #avnrt
Tachyarrhythmia Framework - Differential Diagnosis
 • Narrow QRS - Regular Rhythm: Sinus tachycardia, AVNRT, Orthodromic AVRT,
, AVNRT, Orthodromic ... AVRT, Atrial Tachycardia ... , SVT with bundle ... block, Antidromic AVRT ... , Pre-excited SVT
Supraventricular Tachycardia (SVT) - Differential Diagnosis Framework and Management

Regular SVT: Sinus Tachycardia, AVNRT, AVRT, Atrial Flutter,
(SVT) - Differential ... Management Regular SVT ... , AVNRT, AVRT, Atrial ... Junctional Irregular SVT ... #SVT #Differential
Anatomical Differential Diagnosis for Arrhythmias
 • SA node: Sinus bradycardia, Sick Sinus Syndrome (SSS)
 • AV
bradycardia, Sick Sinus Syndrome ... (AVRT), AV nodal ... (AVNRT) • Ventricles ... VT, Polymorphic ... VT (i.e.
Lead AVR on ECG
1. Acute myocardial infarction: ST elevation > 1.5 mm in aVR, indicative of
(AVRT) in WPW: ... ddx: AVNRT, AVRT ... , atrial tachycardia ... suggestive more of AVRT ... tachycardia (SVT
Tachycardia - Differential Diagnosis Table - Wide vs Narrow, Regular vs Irregular

Regular Rhythm - Narrow Complex
Tachycardia - Differential ... : • ST vs SVT ... (AVNRT, OAVRT, AFIutter ... • HyperK vs VT ... > SVT+conduction