18 results
Narrow Complex Tachycardias (Simplified)

Irregular Narrow Complex Tachycardia:
 1. Atrial fibrillation
	- Usually the correct answer
 2. Multifocal
retrograde) - AVNRT ... , AVRT, Junctional ... differential #diagnosis #causes
Syncope - Differential Diagnosis Algorithm
Neurocardiogenic:
 • Vasovagal
 • Orthostatic Hypotension
 • Autonomic Neuropathy
 • Situational (micturition,
Differential Diagnosis Algorithm ... AFlutter • AVNRT ... /AVRT - Bradyarrhythmia ... Differential #Diagnosis #Algorithm ... #causes
Arrhythmias - Differential Diagnosis Algorithm

Bradyarrhythmia (<60 bpm)
 • Sinus Bradycardia
 • Sick Sinus Syndrome
 • SA
Differential Diagnosis Algorithm ... Aflutter • AVNRT ... • AVRT (ie ... Differential #Diagnosis #Algorithm ... #causes
Treatment of Stable Narrow-Complex Tachycardia
Regular Rhythm:
 • Attempt vagal maneuvers
 • Give adenosine 6 milligrams IV
Converts - Probably AVnRT ... or AVRT - Observe ... Treat underlying cause ... Treat underlying cause ... management #cardiology #algorithm
Anatomical Differential Diagnosis for Arrhythmias
 • SA node: Sinus bradycardia, Sick Sinus Syndrome (SSS)
 • AV
re-entrant tachycardia (AVRT ... re-entrant tachycardia (AVNRT ... Differential #Diagnosis #Causes
Cannon A waves during AVNRT on Physical Exam
In AVNRT, the atria and ventricles contract nearly simultaneously
A waves during AVNRT ... Physical Exam In AVNRT ... minute=rate of AVNRT ... as Typical AVNRT ... Cannon #Awaves #AVNRT
Tachycardia - Differential Diagnosis and Management - Narrow vs Wide, Regular vs Irregular
Narrow - Regular:
Use P
deflection not AVRT ... /AVNRT. ... #wide #narrow #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 ... #Tachycardia #AVNRT
Tachycardia - Differential Diagnosis Table - Wide vs Narrow, Regular vs Irregular

Regular Rhythm - Narrow Complex
• ST vs SVT (AVNRT ... , OAVRT, AFIutter ... whether AF is cause ... Tx: Underlying cause ... Narrow #Irregular #causes
Palpitations - Differential Diagnosis Framework

What?
• It is an unpleasant awareness or sensation that the heart is
• Bradycardia caused ... NON-CARDIAC CAUSES ... maneuvers: SVT-AVNRT ... or AVRT • Standing ... bending over: AVNRT