22 results
Digoxin effect on Electrocardiogram (EKG)
Digoxin is a cardiac glycoside from the foxglove leaf
Mechanism
 - Inhibits Na-K
nodal conduction Uses ... and atrial flutter ... Digoxin effect on ECG ... biphasic T waves - Short ... #Cardiology #Digitalis
Causes of Tachycardia - Differential Diagnosis Algorithm
Narrow Complex - Regular:
 • Sinus tachycardia
 • Atrial flutter
Causes of Tachycardia ... - Differential ... Diagnosis Algorithm ... #Diagnosis #Algorithm ... #Causes #cardiology
Arrhythmias - Differential Diagnosis Algorithm

Bradyarrhythmia (<60 bpm)
 • Sinus Bradycardia
 • Sick Sinus Syndrome
 • SA
Arrhythmias - Differential ... Diagnosis Algorithm ... #Differential # ... Diagnosis #Algorithm ... #causes
Anatomical Differential Diagnosis for Arrhythmias
 • SA node: Sinus bradycardia, Sick Sinus Syndrome (SSS)
 • AV
Anatomical Differential ... Diagnosis for Arrhythmias ... Flutter (AFL), ... #Diagnosis #Causes ... #cardiology
Approach to ECGs - Tachy/Bradyarrhythmias
Tachyarrhythmias - HR > 100
Wide
  (1) VT - DANGER
  (2)
200ms from longer pause ... bradyarrhythmia #ECG ... #EKG #diagnosis ... 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 ... Wave in V1 • Shift ... in relation to ECG ... Embolism #AcutePE #diagnosis
Narrow Complex Tachycardias (Simplified)

Irregular Narrow Complex Tachycardia:
 1. Atrial fibrillation
	- Usually the correct answer
 2. Multifocal
Atrial fibrillation ... Atrial flutter ... #Tachycardias #differential ... #diagnosis #causes ... #cardiology
Causes of Palpitations
 • ARRHYTHMiA 
 • SINUS ARRYTHMIA 
 • ATRIAL FIBRILLATION 
 • ATRIAL
Causes of Palpitations ... FLUTTER • HEART ... #Palpitations #Causes ... #Differential # ... Diagnosis #Cardiology
EKG Interpretation Cheat Sheet
1) Rate 
 - Regular - Count-Off 
 - Irregular - Count number
(e.g. ectopic atrial ... Flutter PR Interval ... de pointes • Short ... Electrocardiogram #cardiology ... #diagnosis #system
Palpitations - Differential Diagnosis Framework

What?
• It is an unpleasant awareness or sensation that the heart is
Palpitations - Differential ... Diagnosis Framework ... exam • 12-lead ECG ... flutter, or atrial ... #Differential #