34 results
Supraventricular Tachycardias - Pathophysiology
Conduction pathways through SA Node, Atrium, AV Node, Bundle of His, and Ventricle
, AV Node, Bundle ... • Atrial Tachycardia ... AV Reentry Tachycardia ... Pathophysiology #SVT ... #diagnosis #cardiology
Tachyarrhythmia Framework - Differential Diagnosis
 • Narrow QRS - Regular Rhythm: Sinus tachycardia, AVNRT, Orthodromic AVRT,
- Differential Diagnosis ... , Atrial Tachycardia ... , SVT with bundle ... , Pre-excited SVT ... #cardiology
Lead AVR on ECG
1. Acute myocardial infarction: ST elevation > 1.5 mm in aVR, indicative of
Subepicardial atrial ... , atrial tachycardia ... tachycardia (SVT ... #electrocardiogram ... #diagnosis #ekg
Tachycardia - Differential Diagnosis Framework
Narrow-Complex:
 • Regular: Sinus Tachycardia, Junctional Tachycardia, Atrial Tachycardia, Atrial Flutter, AVRT
Diagnosis Framework ... , Atrial Tachycardia ... , AVRT (ie. ... , Antidromic AVRT ... #cardiology #wide
Algorithm for the Evaluation of Regular, Wide-Complex Tachycardia
1. aVR: Is the initial deflection in aVR positive?
1. aVR: Is the ... Bundle-branch morphology ... twitter.com/thame #WideComplex ... Interpretation #ECG #EKG #Electrocardiogram ... #Diagnosis #Cardiology
Lead aVR on EKG
Lead aVR can provide some unique insight into 5 different conditions:

 - Acute
narrow complex tachycardias ... from SVT with aberrancy ... using the Vereckei criteria ... ) #Diagnosis # ... Cardiology #EKG
Anatomical Differential Diagnosis for Arrhythmias
 • SA node: Sinus bradycardia, Sick Sinus Syndrome (SSS)
 • AV
Anatomical Differential Diagnosis ... (AVRT), AV nodal ... VT (i.e. ... #Differential #Diagnosis ... #Causes #cardiology
Narrow Complex Tachycardias (Simplified)

Irregular Narrow Complex Tachycardia:
 1. Atrial fibrillation
	- Usually the correct answer
 2. Multifocal
Atrial fibrillation ... "PSVT" (atrioventricular ... retrograde) - AVNRT, AVRT ... #differential #diagnosis ... #causes #cardiology
Causes of Tachycardia - Differential Diagnosis Algorithm
Narrow Complex - Regular:
 • Sinus tachycardia
 • Atrial flutter
- Differential Diagnosis ... AV reentrant tachycardia ... • Atrial tachycardia ... #Differential #Diagnosis ... Algorithm #Causes #cardiology
Arrhythmias - Differential Diagnosis Algorithm

Bradyarrhythmia (<60 bpm)
 • Sinus Bradycardia
 • Sick Sinus Syndrome
 • SA
- Differential Diagnosis ... • Premature atrial ... Tachycardia - ... tachyarrhythmias #Cardiology ... #Differential #Diagnosis