8 results
Pacemaker Placement Indications
Class I:
 • Third degree block
 • Advanced 2nd degree block
 • Symptomatic Mobitz
Pacemaker Placement ... Class Ill: • Syncope ... arrest, prolonged PR ... • Reversible causes ... BrighamMedRes #Pacemaker
Shock - Differential Diagnosis by Classification
Reflex Syncope 
 - Vasovagal syncope
   • Prolonged standing
Differential Diagnosis by Classification ... bradycardia • Sinus pauses ... • AV block ... Differential #Diagnosis #Classification ... #Table #Causes
Syncope - Differential Diagnosis Algorithm
Neurocardiogenic:
 • Vasovagal
 • Orthostatic Hypotension
 • Autonomic Neuropathy
 • Situational (micturition,
Syncope - Differential ... Diagnosis Algorithm ... /3rd degree AV Block ... • Pacemaker ... #causes
Antiarrhythmics - Vaughan Williams Classification:
CLASS 1 - Sodium Channel Blockers:
 • MOA: Block fast Na+ channels
Vaughan Williams Classification ... depolarization • ↑ PR ... velocity) - ↑ PR ... #Pharmacology #Classification ... #Classes #pathophysiology
Antiarrhythmics Pharmacology Summary
Cardiac Conduction Phases:
Phase 0 - Ventricular Depolarization:
 • Na+ channels open leading to a
Vaughan Williams Classification ... depolarization • ↑ PR ... velocity) - ↑ PR ... #Pharmacology #Classification ... #Classes #pathophysiology
Causes of Syncope - Differential Diagnosis Algorithm
Cardiac - Arrhythmia:
 • Tachyarrhythmia
 • Bradyarrhythmia
 • Supraventricular Tachycardia
Causes of Syncope ... Differential Diagnosis Algorithm ... Atrioventricular Block ... Differential #Diagnosis #Algorithm ... #Causes
Palpitations - Differential Diagnosis Framework

What?
• It is an unpleasant awareness or sensation that the heart is
twitching CARDIAC CAUSES ... Nonarrhythmic Cardiac Causes ... valve prolapse • Pacemaker-mediated ... NON-CARDIAC CAUSES ... consciousness • Near-syncope
This infographic provides a mnemonic tool called “WOBBLER” for assessing an ECG (electrocardiogram) in cases of
electrocardiogram) in cases ... evaluate potential causes ... ECG Section: P, PR ... pathway that can cause ... • ECG Section: PR