159 results
Bradycardia Diagnostic and Management Algorithm

CONSIDER ETIOLOGY (not inclusive): 
 - STRUCTURAL: sick sinus, AV block, ischemia,
sick sinus, AV block ... Hypothyroidism - TOX: beta-blockers ... LIFE THREATENING CAUSES ... TREATMENT - Drugs (beta-blockers ... #Differential
Antiarrhythmics - Vaughan Williams Classification:
CLASS 1 - Sodium Channel Blockers:
 • MOA: Block fast Na+ channels
: • MOA: Block ... 2 - Beta Blockers ... : • MOA: Block ... primarily) and block ... : • MOA: Block
Summary of Heart Blocks
1st Degree Heart Block:
 • Prolonged PR >200ms (5 small squares).
 • Narrow
Summary of Heart Blocks ... 1st Degree Heart Block ... Mobitz I Heart Block ... HeartBlocks #Types #Classification ... electrocardiogram #ecg
Atrioventricular Blocks (AV blocks) - ECG Diagnosis Summary
First Degree AV Block
 • The P wave is
Atrioventricular Blocks ... (AV blocks) - ECG ... group-beating" on the ECG ... #ecg #diagnosis ... electrocardiogram #classification
Beta Blocker Side Effects / Toxicity
Cardiac Side Effects:
 • Sinus bradycardia, AV block, Heart failure exacerbation,
Beta Blocker Side ... bradycardia, AV block ... exacerbation, Beta ... blocker withdrawal ... syndrome (e.g.
Deep T Wave Inversions - Differential
Normal variants 
  A. Juvenile T wave pattern
Wave Inversions - Differential ... bundle branch blocks ... bundle branch block ... #Diagnosis #Causes ... #Cardiology #ECG
Antiarrhythmics Pharmacology Summary
Cardiac Conduction Phases:
Phase 0 - Ventricular Depolarization:
 • Na+ channels open leading to a
: • MOA: Block ... 2 - Beta Blockers ... : • MOA: Block ... primarily) and block ... : • MOA: Block
Mobitz Type I (Wenckebach Phenomenon) 2nd Degree AV Block on EKG
 • P-R interval gradually increases
2nd Degree AV Block ... till a dropped beat ... to 6:5 in this ECG ... Second #Degree #AV #Block ... #ECG #Electrocardiogram
Common sodium channel blockers which cause QRS widening.

Anticonvulsants: 
 - Carbamazepine 
Antidysrhythmics:  
 - Group
sodium channel blockers ... - Amantadine Beta ... QRS #widening #ECG ... Toxicology #Diagnosis #Differential ... #Drugs #Classes
Antiarrhythmic Medications - Vaughan Williams Classification - Summary Table
Class I agents - Sodium Channel Blockers⠀
Class II
Vaughan Williams Classification ... Sodium Channel Blockers ... are beta blockers ... Calcium Channels Blockers ... #Medications #Classification