27 results
Antiarrhythmic Drugs

CLASS IA
 • Procainamide, Quinidine, Disopyramide
CLASS 1B
 • Lidocaine, Mexiletine
CLASS 2
 • Propranolol, Esmolol
CLASS 4
Antiarrhythmic Drugs ... Adenosine, Magnesium, Potassium ... #Antiarrhythmic ... Medications #Classes #Classification
Antiarrhythmic Medications - Vaughan Williams Classification - Summary Table
Class I agents - Sodium Channel Blockers⠀
Class II
Antiarrhythmic Medications ... Vaughan Williams Classification ... Class III agents - Potassium ... EricsMedicalLectures/ #Antiarrhythmic ... #Medications #Classification
Hypokalemia - Differential Diagnosis Algorithm

Transcellular Shift:
 • Alkalosis
 • ↑ beta-2 adrenergic simulation 
 • Erythropoiesis
- Differential Diagnosis ... Transcellular Shift ... Transcellular shifts ... #Differential #Diagnosis ... nephrology #low #potassium
Causes of Hyperkalemia - Differential Diagnosis Algorithm
 • Increased Intake
 • Reduced Excretion (IV potassium with
- Differential Diagnosis ... Excretion (IV potassium ... Transcellular Shift ... #Differential #Diagnosis
Causes of Hypokalemia - Differential Diagnosis Algorithm
Increased Loss 
 - Increased GI Loss
 - Increased Urinary
- Differential Diagnosis ... Transcellular Shift ... #Differential #Diagnosis ... Algorithm #causes #potassium
Causes of Hyperkalemia

Hyperkalemia is caused by excess potassium intake, impaired potassium excretion, or transcellular shifts. The
caused by excess potassium ... intake, impaired potassium ... transcellular shifts ... adapt to excess potassium ... dysfunction is common #Diagnosis
Antiarrhythmics - Vaughan Williams Classification:
CLASS 1 - Sodium Channel Blockers:
 • MOA: Block fast Na+ channels
Antiarrhythmics ... Vaughan Williams Classification ... repolarization CLASS 3 - Potassium ... accpcardprn #Antiarrhythmics ... #Pharmacology #Classification
Mechanisms of Drug-Induced Hyperkalemia 
 • Direct renin inhibitor (Aliskiren)
 • Renin release inhibition (NSAIDs, Beta-Blockers)
• Increased EC shift ... #differential #diagnosis ... #pharmacology #potassium
Hypokalemia Differential Diagnosis Algorithm

Low intake 
• poor oral intake 

Renal loss 
• Medication 
• Hypomagnesemia 
•
Hypokalemia Differential Diagnosis ... Transcellular shift ... #Differential #Diagnosis ... Algorithm #Causes #Classification
Hyperkalemia - Management Algorithm
 • IV calcium
 • IV insulin and glucose and/or salbutamolt
 • Consider
Dialysis Serum potassium ... blocks, QRS axis shift ... #hyperkalemia #potassium ... #high #diagnosis