22 results
Tachycardia - Differential Diagnosis and Management - Narrow vs Wide, Regular vs Irregular
Narrow - Regular:
Use P
- Differential Diagnosis ... /AVNRT. ... • Atrial Flutter ... #Management #cardiology ... #wide #narrow #algorithm
Typical (Counterclockwise) and Reverse Typical (Clockwise) Atrial Flutter on EKG
Typical (Counterclockwise) Atrial Flutter
 • Inferior leads:
Flutter on EKG ... Flutter • Inferior ... #ecg #ekg #electrocardiogram ... #cardiology #clinical ... #diagnosis #comparison
Supraventricular Tachycardias - Pathophysiology
Conduction pathways through SA Node, Atrium, AV Node, Bundle of His, and Ventricle
Tachycardias - Pathophysiology ... FlutterAtrial ... #SVT #diagnosis ... #cardiology #conduction ... #pathways #avnrt
Arrhythmias - Differential Diagnosis Algorithm

Bradyarrhythmia (<60 bpm)
 • Sinus Bradycardia
 • Sick Sinus Syndrome
 • SA
- Differential Diagnosis ... Algorithm Bradyarrhythmia ... • AVNRT ... #Differential #Diagnosis ... #Algorithm #causes
Narrow Complex Tachycardias (Simplified)

Irregular Narrow Complex Tachycardia:
 1. Atrial fibrillation
	- Usually the correct answer
 2. Multifocal
3 different P wave ... Atrial flutter ... retrograde) - AVNRT ... #differential #diagnosis ... #causes #cardiology
Anatomical Differential Diagnosis for Arrhythmias
 • SA node: Sinus bradycardia, Sick Sinus Syndrome (SSS)
 • AV
Anatomical Differential Diagnosis ... Flutter (AFL), ... re-entrant tachycardia (AVNRT ... #Differential #Diagnosis ... #Causes #cardiology
Causes of Tachycardia - Differential Diagnosis Algorithm
Narrow Complex - Regular:
 • Sinus tachycardia
 • Atrial flutter
Causes of Tachycardia ... Algorithm Narrow ... flutter • AV ... #Algorithm #Causes ... #cardiology
Cannon A Waves
 • Caused by atrial contracting against a closed tricuspid valve
 • Atrioventricular dissociation
Caused by atrial ... activation from SVT ... (e.g., junctional ... 2LmUODZ #Cannon #AWaves ... #diagnosis #cardiology
Lead AVR on ECG
1. Acute myocardial infarction: ST elevation > 1.5 mm in aVR, indicative of
Subepicardial atrial ... aVR • Classic EKG ... tachycardia ddx: AVNRT ... , AVRT, atrial tachycardia ... #cardiology
Treatment of Stable Narrow-Complex Tachycardia
Regular Rhythm:
 • Attempt vagal maneuvers
 • Give adenosine 6 milligrams IV
Converts - Probably AVnRT ... flutter, ectopic ... Treat underlying cause ... flutter or MAT ... #algorithm