21 results
Supraventricular Tachycardias - Pathophysiology
Conduction pathways through SA Node, Atrium, AV Node, Bundle of His, and Ventricle
Tachycardia • Atrial ... Tachycardia • Atrial ... Flutter • Atrial ... Fibrillation ... SVT #diagnosis #cardiology
Tachyarrhythmia Framework - Differential Diagnosis
 • Narrow QRS - Regular Rhythm: Sinus tachycardia, AVNRT, Orthodromic AVRT,
Sinus tachycardia, AVNRT ... fibrillation, Atrial ... fibrillation with ... with variable AV ... #Diagnosis #cardiology
Anatomical Differential Diagnosis for Arrhythmias
 • SA node: Sinus bradycardia, Sick Sinus Syndrome (SSS)
 • AV
: Premature Atrial ... Flutter (AFL), Atrial ... FAT), Multifocal Atrial ... #Diagnosis #Causes ... #cardiology
Narrow Complex Tachycardias (Simplified)

Irregular Narrow Complex Tachycardia:
 1. Atrial fibrillation
	- Usually the correct answer
 2. Multifocal
Atrial fibrillation ... Multifocal Atrial ... Atrial flutter ... (Ectopic) Atrial ... #cardiology
Cannon A Waves
 • Caused by atrial contracting against a closed tricuspid valve
 • Atrioventricular dissociation
Caused by atrial ... , it indicates AV ... dissociation + retrograde atrial ... 2LmUODZ #Cannon #AWaves ... #diagnosis #cardiology
Treatment of Stable Narrow-Complex Tachycardia
Regular Rhythm:
 • Attempt vagal maneuvers
 • Give adenosine 6 milligrams IV
convert - Possible atrial ... flutter, ectopic atrial ... Rhythm: • Probable atrial ... fibrillation or ... possible atrial
Visual Guide to AV Nodal Reentrant Tachycardia (AVNRT) - Pathophysiology
 - Dual AV nodal physiology is
) - Pathophysiology ... - Premature atrial ... - In most case ... ECG usually shows ... #cardiology #SVT
Digoxin effect on Electrocardiogram (EKG)
Digoxin is a cardiac glycoside from the foxglove leaf
Mechanism
 - Inhibits Na-K
- Decreases AV ... : - Atrial fibrillation ... and atrial flutter ... or biphasic T waves ... #Cardiology #Digitalis
Causes of Tachycardia - Differential Diagnosis Algorithm
Narrow Complex - Regular:
 • Sinus tachycardia
 • Atrial flutter
tachycardia • Atrial ... tachycardia • Atrial ... Irregular: • Atrial ... • Multifocal atrial ... #cardiology
Arrhythmias - Differential Diagnosis Algorithm

Bradyarrhythmia (<60 bpm)
 • Sinus Bradycardia
 • Sick Sinus Syndrome
 • SA
• Premature atrial ... Monofocal Ectopic Atrial ... Aflutter • AVNRT ... • Multifocal Atrial ... tachyarrhythmias #Cardiology