13 results
Supraventricular Tachycardias - Pathophysiology
Conduction pathways through SA Node, Atrium, AV Node, Bundle of His, and Ventricle
Pathophysiology Conduction ... pathways through SA ... SVT #diagnosis #cardiology ... #conduction #pathways
Arrhythmias - Differential Diagnosis Algorithm

Bradyarrhythmia (<60 bpm)
 • Sinus Bradycardia
 • Sick Sinus Syndrome
 • SA
Differential Diagnosis Algorithm ... Sinus Syndrome • SA ... rhythm SVT with conduction ... tachyarrhythmias #Cardiology ... Differential #Diagnosis #Algorithm
Anatomical Differential Diagnosis for Arrhythmias
 • SA node: Sinus bradycardia, Sick Sinus Syndrome (SSS)
 • AV
Arrhythmias • SA ... escape rhythm, Conduction ... His-purkinje system: Conduction ... > 100 bpm) • SA ... Diagnosis #Causes #cardiology
Cardiac conducting system 
 - Sinoatrial (SA) node normally generates the action potential, i.e. the electrical
Cardiac conducting ... - Sinoatrial (SA ... - The SA node ... #Anatomy #Cardiology ... Cardiac #Heart #Conduction
Antiarrhythmics - Vaughan Williams Classification:
CLASS 1 - Sodium Channel Blockers:
 • MOA: Block fast Na+ channels
reduce speed of ion conduction ... current) causing ↓SA ... to ↑ ERP (slow conduction ... inotropy) ACCP Cardiology ... pathophysiology #cardiology
Syncope - Differential Diagnosis Algorithm
Neurocardiogenic:
 • Vasovagal
 • Orthostatic Hypotension
 • Autonomic Neuropathy
 • Situational (micturition,
Differential Diagnosis Algorithm ... Sinus Syndrome (SA ... Syndrome #Syncope #Cardiology ... Differential #Diagnosis #Algorithm
Antiarrhythmics Pharmacology Summary
Cardiac Conduction Phases:
Phase 0 - Ventricular Depolarization:
 • Na+ channels open leading to a
Summary Cardiac Conduction ... current) causing ↓SA ... to ↑ ERP (slow conduction ... inotropy) ACCP Cardiology ... pathophysiology #phases #cardiology
Arrhythmias - Differential Diagnosis Algorithm
May present as: palpitations, dizziness, syncope, chest discomfort
Cardiac Causes:
 - Structural
Differential Diagnosis Algorithm ... - Electrical Conduction ... #Arrhythmias #Cardiology ... Differential #Diagnosis #Algorithm
Causes of Tachycardia - Differential Diagnosis Algorithm
Narrow Complex - Regular:
 • Sinus tachycardia
 • Atrial flutter
Differential Diagnosis Algorithm ... with variable conduction ... Differential #Diagnosis #Algorithm ... #Causes #cardiology
Perhaps quite too often, the knee-jerk reaction to an elevated Troponin is to call our friends
our friends from Cardiology ... Consider Sepsis, a condition ... Cardiology cannot ... similar where Cardiology ... #diagnosis #algorithm