26 results
Tachycardia - Differential Diagnosis Framework
Narrow-Complex:
 • Regular: Sinus Tachycardia, Junctional Tachycardia, Atrial Tachycardia, Atrial Flutter, AVRT
Atrial Flutter, AVRT ... WPW), AVnRT (ie ... Tachycardia, Antidromic AVRT ... Diagnosis #cardiology #wide ... #narrow #irregular
Tachyarrhythmia Framework - Differential Diagnosis
 • Narrow QRS - Regular Rhythm: Sinus tachycardia, AVNRT, Orthodromic AVRT,
Sinus tachycardia, AVNRT ... , Orthodromic AVRT ... tachycardia • Narrow ... tachycardia • Wide ... block, Antidromic AVRT
Lead AVR on ECG
1. Acute myocardial infarction: ST elevation > 1.5 mm in aVR, indicative of
in narrow cornplex ... tachycardia • Narrow ... tachycardia ddx: AVNRT ... suggestive more of AVRT ... tachycardia (SVT) in wide
Tachycardia - Differential Diagnosis and Management - Narrow vs Wide, Regular vs Irregular
Narrow - Regular:
Use P
and Management - Narrow ... vs Wide, Regular ... deflection not AVRT ... /AVNRT. ... #narrow #algorithm
Narrow Complex Tachycardias (Simplified)

Irregular Narrow Complex Tachycardia:
 1. Atrial fibrillation
	- Usually the correct answer
 2. Multifocal
Narrow Complex Tachycardias ... ) Irregular Narrow ... retrograde) - AVNRT ... , AVRT, Junctional ... NarrowComplex #Narrow
Arrhythmias - Differential Diagnosis Algorithm

Bradyarrhythmia (<60 bpm)
 • Sinus Bradycardia
 • Sick Sinus Syndrome
 • SA
Differential Diagnosis Algorithm ... (>100 bpm) - Narrow ... Aflutter • AVNRT ... • AVRT (ie ... WPW) - Narrow
Lead aVR on EKG
Lead aVR can provide some unique insight into 5 different conditions:

 - Acute
Lead aVR on EKG ... Lead aVR can provide ... TCA-like overdose - AVRT ... in narrow complex ... with aberrancy in wide
Wolff-Parkinson-White (WPW)
- Orthodromic AVRT: Narrow complex, most common 
- Antidromic AVRT: wide complex because goes through
- Orthodromic AVRT ... : Narrow complex ... - Antidromic AVRT ... : wide complex because
Tachycardia - Differential Diagnosis Table - Wide vs Narrow, Regular vs Irregular

Regular Rhythm - Narrow Complex
Diagnosis Table - Wide ... vs Narrow, Regular ... Regular Rhythm - Narrow ... • ST vs SVT (AVNRT ... , OAVRT, AFIutter
Treatment of Stable Narrow-Complex Tachycardia
Regular Rhythm:
 • Attempt vagal maneuvers
 • Give adenosine 6 milligrams IV
Treatment of Stable Narrow-Complex ... Converts - Probably AVnRT ... or AVRT - Observe ... management #cardiology #algorithm