85 results
Supraventricular Tachycardias - Pathophysiology
Conduction pathways through SA Node, Atrium, AV Node, Bundle of His, and Ventricle
Tachycardias - Pathophysiology ... , AV Node, Bundle ... Fibrillation • AV ... Tachycardia • AV ... #Tachycardias #Pathophysiology
Approach to ECGs - Tachy/Bradyarrhythmias
Tachyarrhythmias - HR > 100
Wide
  (1) VT - DANGER
  (2)
(3) SVTs - atrial ... (3) Multifocal atrial ... 200ms from longer pause ... 2º - Mobitz I ... II / Mobitz - ,
Anatomical Differential Diagnosis for Arrhythmias
 • SA node: Sinus bradycardia, Sick Sinus Syndrome (SSS)
 • AV
Syndrome (SSS) • AV ... Tachycardia (MAT) • AV ... node: AV re-entrant ... tachycardia (AVRT), AV ... Differential #Diagnosis #Causes
Causes of Tachycardia - Differential Diagnosis Algorithm
Narrow Complex - Regular:
 • Sinus tachycardia
 • Atrial flutter
Causes of Tachycardia ... Differential Diagnosis Algorithm ... flutter • AV ... tachycardia • AV ... #Causes #cardiology
Bradycardia - Differential Diagnosis Framework and Management
Narrow Complex Bradycardia:
 • Regular: Sinus Bradycardia, AFib w/ AV
Block, Atrial Tachy ... Block, Mobitz I ... AV Block, Mobitz ... II AV Block Wide ... SVT w/ Wide QRS, Mobitz
Visual Guide to AV Nodal Reentrant Tachycardia (AVNRT) - Pathophysiology
 - Dual AV nodal physiology is
Tachycardia (AVNRT) - Pathophysiology ... - Premature atrial ... depolarizes the atria ... - In most case ... Tachycardia #AVNRT #Pathophysiology
Atrioventricular (AV) Blocks

First Degree AV Block - "If your R is far from your P than
First Degree AV ... Block - Mobitz ... Block - Mobitz ... not you have a Mobitz ... independently of the atria
Pacemaker Placement Indications
Class I:
 • Third degree block
 • Advanced 2nd degree block
 • Symptomatic Mobitz
• Symptomatic Mobitz ... I or II • Mobitz ... • First degree AV ... • Reversible causes ... of AV block -
Arrhythmias - Differential Diagnosis Algorithm

Bradyarrhythmia (<60 bpm)
 • Sinus Bradycardia
 • Sick Sinus Syndrome
 • SA
Differential Diagnosis Algorithm ... • SA Block • AV ... with Variable AV ... Differential #Diagnosis #Algorithm ... #causes
Treatment of Stable Narrow-Complex Tachycardia
Regular Rhythm:
 • Attempt vagal maneuvers
 • Give adenosine 6 milligrams IV
Control rate with AV ... flutter, ectopic atrial ... Treat underlying cause ... Treat underlying cause ... management #cardiology #algorithm