29 results
Mechanisms of Drug-Induced Hyperkalemia 
 • Direct renin inhibitor (Aliskiren)
 • Renin release inhibition (NSAIDs, Beta-Blockers)
• Increased EC shift ... Benyzlpenicillin, blood ... #hyperkalemia #differential ... #pharmacology # ... potassium #medications
Causes of Hypokalemia - Differential Diagnosis Algorithm
Increased Loss 
 - Increased GI Loss
 - Increased Urinary
Hypokalemia - Differential ... Transcellular Shift ... #Hypokalemia #Differential ... Algorithm #causes #potassium ... #low #pathophysiology
Hyperkalemia Treatment Options
Stabilize cardiac membrane:
 • IV Calcium (peaks 5-10 minutes)
Decrease potassium concentration:
 • IV Fluids
Shift
minutes) Decrease potassium ... • IV Fluids Shift ... potassium intracellularly ... peaks 1-2h) • Blood ... #Hyperkalemia #management
Oxyhemoglobin Dissociation Curve 

Left Shift - decreased unloading of O2 at tissue level (i.e.  increased
Curve Left Shift ... • stored red blood ... Dissociation #Curve #Pathophysiology ... #Left #Right #Shift ... #Differential #
Hyperkalemia - Management Algorithm
 • IV calcium
 • IV insulin and glucose and/or salbutamolt
 • Consider
Hyperkalemia - Management ... • Consider K+ binder ... Dialysis Serum potassium ... blocks, QRS axis shift ... #hyperkalemia #potassium
Hyperkalemia Differential Diagnosis Algorithm
R/O Pseudo-hyperkalemia:
 • Possible Lab error! Alwavs Repeat Blood sample!
 • Leukocytosis, Thrombocytosis:
Hyperkalemia Differential ... Alwavs Repeat Blood ... while drawing blood ... Algorithm #causes #potassium ... #high #pathophysiology
Potassium Binders for Management of Hyperkalemia
 • SPS - Sodium polystyrene sulfonate
 • Patiromer (veltassa)
 •
Potassium Binders ... for Management ... cyclosilicate #Potassium ... #Binders #Management ... Hyperkalemia #treatment #pharmacology
Digoxin Pharmacology and Pathophysiology
1) Na/K ATPase Pump - Digoxin works by directly binding to and inhibiting
Digoxin Pharmacology ... and Pathophysiology ... Because digoxin binds ... CaitEKulig #Digoxin #Pharmacology ... #Pathophysiology
Lactated Ringers (LR) vs Normal Saline (NS) - Comparison

Composition of LR:
 • Sodium 130 mEq/L
 •
130 mEq/L • Potassium ... Can give with blood ... - Citrate in blood ... transcellular shift ... NS #comparison #pharmacology
Hyperkalemia - Differential Diagnosis Framework

PseudoHyperkalemia:
 • Lab error
 • Traumatic venipuncture
 • Hemolysis, thrombocytosis, leukocytosis
 •
Hyperkalemia - Differential ... Crush injury • Blood ... • Recent IV potassium ... Intracellular Shift ... Blood transfusion