9 results
Causes of Tachycardia - Differential Diagnosis Algorithm
Narrow Complex - Regular:
 • Sinus tachycardia
 • Atrial flutter
Causes of Tachycardia ... fibrillation • Multifocal ... • Atrial flutter ... Diagnosis #Algorithm #Causes ... #cardiology
Narrow Complex Tachycardias (Simplified)

Irregular Narrow Complex Tachycardia:
 1. Atrial fibrillation
	- Usually the correct answer
 2. Multifocal
Narrow Complex Tachycardias ... Multifocal Atrial ... Atrial flutter ... differential #diagnosis #causes ... #cardiology
Arrhythmias - Differential Diagnosis Algorithm

Bradyarrhythmia (<60 bpm)
 • Sinus Bradycardia
 • Sick Sinus Syndrome
 • SA
• Premature atrial ... Tachycardia • Aflutter ... Conduction • Multifocal ... tachyarrhythmias #Cardiology ... Diagnosis #Algorithm #causes
Digoxin effect on Electrocardiogram (EKG)
Digoxin is a cardiac glycoside from the foxglove leaf
Mechanism
 - Inhibits Na-K
Digoxin effect on Electrocardiogram ... nodal conduction Uses ... and atrial flutter ... Digoxin effect on ECG ... #EKG #Cardiology
Approach to ECGs - Tachy/Bradyarrhythmias
Tachyarrhythmias - HR > 100
Wide
  (1) VT - DANGER
  (2)
block (3) Multifocal ... 200ms from longer pause ... bradyarrhythmia #ECG ... #electrocardiogram ... #cardiology #differential
EKG in Acute Pulmonary Embolism
The sensitivity and specificity for EKG findings in acute PE are low.
EKG
evaluating for other causes ... also a result of atrial ... Incomplete or Complete ... in relation to ECG ... #electrocardiogram
Treatment of Stable Narrow-Complex Tachycardia
Regular Rhythm:
 • Attempt vagal maneuvers
 • Give adenosine 6 milligrams IV
Stable Narrow-Complex ... flutter, ectopic ... Treat underlying cause ... Treat underlying cause ... Treatment #management #cardiology
EKG Interpretation Cheat Sheet
1) Rate 
 - Regular - Count-Off 
 - Irregular - Count number
(e.g. ectopic atrial ... P-Wave Morphology = multifocal ... Flutter PR Interval ... Interpretation #ECG ... #Electrocardiogram
Palpitations - Differential Diagnosis Framework

What?
• It is an unpleasant awareness or sensation that the heart is
exam • 12-lead ECG ... flutter, or atrial ... fibrillation/flutter ... sinus syndrome) • Multifocal ... #Palpitations #Cardiology