57 results
Antiarrhythmics Pharmacology Summary
Cardiac Conduction Phases:
Phase 0 - Ventricular Depolarization:
 • Na+ channels open leading to a
Delays ventricular repolarization ... - Ventricular Repolarization ... Vaughan Williams Classification ... #Pharmacology #Classification ... #Classes #pathophysiology
Antiarrhythmics - Vaughan Williams Classification:
CLASS 1 - Sodium Channel Blockers:
 • MOA: Block fast Na+ channels
Vaughan Williams Classification ... interval (delays time repolarization ... prolong AV node repolarization ... #Pharmacology #Classification ... #Classes #pathophysiology
Hyperkalemia shortens repolarization; changes in the T wave provide the earliest clues to hyperpotassemia.
 - At
Hyperkalemia shortens ... repolarization; ... changes in the ... causes peaked T ... #Progression #Table
Antiarrhythmics - Vaughan Williams Classification
Class I (Ia, Ib, Ic) - Na+ Channel Blockade
 • Slows depolarization
Vaughan Williams Classification ... Ib, Ic) - Na+ Channel ... Class III - K+ Channel ... VaughanWilliams #Classification ... #Classes #cardiology
Bradycardia Diagnostic and Management Algorithm

CONSIDER ETIOLOGY (not inclusive): 
 - STRUCTURAL: sick sinus, AV block, ischemia,
Diagnostic and Management ... Algorithm CONSIDER ... digoxin, calcium channel ... LIFE THREATENING CAUSES ... Electrolytes (hyperkalemia
Classification, Differential Diagnosis, and Features of Hyponatremia According to Volume Status 

Hypervolemic hypernatremia 
 - CHF
Classification, ... Glucocorticoid deficit - Hypokalemia ... #Hyponatremia #Classification ... Differential #Diagnosis #Table ... #Causes
Ventricular Tachycardia - Management Algorithm
Wide Complex Tachycardia: Rate > 100, QRS > 120
DDx: Ventricular tachycardia, SVT
Tachycardia - Management ... Algorithm Wide ... aberrancy, SVT iso Na channel ... blocker, Hyperkalemia ... #Algorithm #cardiology
Emergency Management of Hyperkalemia in Adults
Assess Patient - Airway Breathing Circulation Disability Exposure (ABCDE) Approach
 •
Emergency Management ... of Hyperkalemia ... mmol/L - Consider cause ... Prevention - Consider cause ... #management #algorithm
Hypokalemia Differential Diagnosis Algorithm

Low intake 
• poor oral intake 

Renal loss 
• Medication 
• Hypomagnesemia 
•
Hypokalemia Differential ... Diagnosis Algorithm ... amzn.to/2LmUODZ #Hypokalemia ... Differential #Diagnosis #Algorithm ... #Causes #Classification
Hypomagnesemia - Etiologies by Mechanism

Decreased GI Uptake 
 - Poor dietary intake (particularly common in alcoholics)
abnormalities - Hypercalcemia ... - Hypokalemia ... Low #Magnesium #Table ... #Classification ... #Causes #Workup