45 results
Antiarrhythmic Drugs

CLASS IA
 • Procainamide, Quinidine, Disopyramide
CLASS 1B
 • Lidocaine, Mexiletine
CLASS 2
 • Propranolol, Esmolol
CLASS 4
Antiarrhythmic Drugs CLASS ... Disopyramide CLASS ... Adenosine, Magnesium, Potassium ... #Medications #Classes ... Classification #Pharmacology
Hypokalemia - Differential Diagnosis
Poor Intake 
 - Starvation
 - Anorexia
GI Losses 
 - Vomiting / NG
- Anorexia GI Losses ... Ureterosigmoidostomy Urinary Losses ... - Hypokalemic periodic ... Diagnosis #Low #Potassium ... Classification #Causes
Causes of Hypokalemia - Differential Diagnosis Algorithm
Increased Loss 
 - Increased GI Loss
 - Increased Urinary
Causes of Hypokalemia ... Diagnosis #Algorithm #causes ... #potassium #low ... #pathophysiology
Here’s a review of the Renin-Angiotensin-Aldosterone system (RAAS)

This is a very common pathway that clinicians should
with excreting potassium ... sodium, which causes ... inhibiting drug classes ... will increase potassium ... ReninAngiotensinAldosteroneSystem #RAAS #Pharmacology
Digoxin Pharmacology and Pathophysiology
1) Na/K ATPase Pump - Digoxin works by directly binding to and inhibiting
Digoxin Pharmacology ... and Pathophysiology ... intracellular calcium causes ... CaitEKulig #Digoxin #Pharmacology ... #Pathophysiology
Hypokalemia Evaluation Algorithm

Before evaluating hypokalemia, life threatening complications such as arrhythmias and paralysis should be looked
life threatening complications ... treated with IV potassium ... wasting from other causes ... suggests extra-renal causes ... #differential #potassium
Drugs affecting the cardiac action potential. The sharp rise in voltage ("0") corresponds to the influx
repolarizing eflux of potassium ... #Pathophys #Pharmacology ... Antiarrhythmics #Classes
Hyperkalemia Differential Diagnosis Algorithm
R/O Pseudo-hyperkalemia:
 • Possible Lab error! Alwavs Repeat Blood sample!
 • Leukocytosis, Thrombocytosis:
Diagnosis #Algorithm #causes ... #potassium #high ... #pathophysiology
Hyperkalemia - Differential Diagnosis Framework

PseudoHyperkalemia:
 • Lab error
 • Traumatic venipuncture
 • Hemolysis, thrombocytosis, leukocytosis
 •
• Recent IV potassium ... - Hyperkalemia Periodic ... Seaweed, Nuts, molasses ... differential #diagnosis #causes ... #potassium #high
Antiarrhythmics - Vaughan Williams Classification:
CLASS 1 - Sodium Channel Blockers:
 • MOA: Block fast Na+ channels
Classification: CLASS ... 3 - Potassium Channel ... Vaughan #Williams #Pharmacology ... Classification #Classes ... #pathophysiology