19 results
Narrow Complex Tachycardias (Simplified)

Irregular Narrow Complex Tachycardia:
 1. Atrial fibrillation
	- Usually the correct answer
 2. Multifocal
A regular rhythm ... retrograde) - AVNRT ... , AVRT, Junctional ... differential #diagnosis #causes ... #cardiology
Supraventricular Tachycardia (SVT) - Differential Diagnosis Framework and Management

Regular SVT: Sinus Tachycardia, AVNRT, AVRT, Atrial Flutter,
Management Regular ... Sinus Tachycardia, AVNRT ... , AVRT, Atrial Flutter ... Modified Valsalva Maneuver ... Diagnosis #Management #cardiology
Cannon A Waves in AVNRT on Neck Physical Exam

69 year old female patient comes with a
Cannon A Waves in AVNRT ... ... regular cannon ... a waves in AVNRT ... #Neck #PhysicalExam ... #JVP #Cardiology
Tachycardia - Differential Diagnosis Table - Wide vs Narrow, Regular vs Irregular

Regular Rhythm - Narrow Complex
• ST vs SVT (AVNRT ... • Tx: Vagal maneuvers ... whether AF is cause ... Tx: Underlying cause ... #cardiology
Cannon A waves during AVNRT on Physical Exam
In AVNRT, the atria and ventricles contract nearly simultaneously
simultaneously at regular ... This tracing plus regular ... to diagnose the case ... #PhysicalExam # ... JVP #Cardiology
Treatment of Stable Narrow-Complex Tachycardia
Regular Rhythm:
 • Attempt vagal maneuvers
 • Give adenosine 6 milligrams IV
Narrow-Complex Tachycardia Regular ... Attempt vagal maneuvers ... Converts - Probably AVnRT ... Treat underlying cause ... Treatment #management #cardiology
Cardiac Maneuvers and Effects on Murmurs

Valsalva Standing - Decr BIood Return to LV
Laying Down, Squatting, Straight
Cardiac Maneuvers ... Afterload Post PVC ... ) #Cardiac #Maneuvers ... Effects #Murmurs #Cardiology ... #PhysicalExam
Arrhythmias - Differential Diagnosis Algorithm

Bradyarrhythmia (<60 bpm)
 • Sinus Bradycardia
 • Sick Sinus Syndrome
 • SA
Aflutter • AVNRT ... • AVRT (ie ... Wide Complex - Regular ... tachyarrhythmias #Cardiology ... Diagnosis #Algorithm #causes
Anatomical Differential Diagnosis for Arrhythmias
 • SA node: Sinus bradycardia, Sick Sinus Syndrome (SSS)
 • AV
re-entrant tachycardia (AVRT ... re-entrant tachycardia (AVNRT ... Contractions (PVC ... Differential #Diagnosis #Causes ... #cardiology
Visual Guide to AV Nodal Reentrant Tachycardia (AVNRT) - Pathophysiology
 - Dual AV nodal physiology is
substrate for AVNRT ... - Once the PAC ... - In most case ... usually shows: regular ... Pathophysiology #cardiology