9 results
Mechanisms of Drug-Induced Hyperkalemia 
 • Direct renin inhibitor (Aliskiren)
 • Renin release inhibition (NSAIDs, Beta-Blockers)
of Drug-Induced Hyperkalemia ... inhibition (NSAIDs, Beta-Blockers ... MunerMohamed1 #hyperkalemia ... differential #diagnosis #pathophysiology ... #pharmacology #potassium
Drugs that Impair Renal Potassium Excretion 

Decreased ENaC channel function: Amiloride, Triamterene, Pentamidine
Decreased Aldosterone Synthesis: Heparin,
that Impair Renal Potassium ... Release: NSAIDs, Beta-Blockers ... happypillsrx/ #Hyperkalemia ... #Pathophysiology ... Pharmacology #Impaired #Potassium
Antiarrhythmics - Vaughan Williams Classification:
CLASS 1 - Sodium Channel Blockers:
 • MOA: Block fast Na+ channels
Vaughan Williams Classification ... duration CLASS 2 - Beta ... repolarization CLASS 3 - Potassium ... alpha & beta adrenergic ... #Classes #pathophysiology
Antiarrhythmics Pharmacology Summary
Cardiac Conduction Phases:
Phase 0 - Ventricular Depolarization:
 • Na+ channels open leading to a
Vaughan Williams Classification ... duration CLASS 2 - Beta ... repolarization CLASS 3 - Potassium ... alpha & beta adrenergic ... #Classes #pathophysiology
Causes of Hypokalemia - Differential Diagnosis Algorithm
Increased Loss 
 - Increased GI Loss
 - Increased Urinary
Causes of Hypokalemia ... Differential Diagnosis Algorithm ... cells: Insulin, Beta-Agonist ... #causes #potassium ... #low #pathophysiology
Digoxin Pharmacology and Pathophysiology
1) Na/K ATPase Pump - Digoxin works by directly binding to and inhibiting
Pharmacology and Pathophysiology ... - When digoxin blocks ... 4 and phase O of ... - Hyperkalemia ( ... Since digoxin blocks
Emergent Hyperkalemia Treatment Algorithm
ECG changes, weakness, K+ >6.5 Or renal insufficiency with K >5.5 with cellular
Emergent Hyperkalemia ... Treatment Algorithm ... bradycardia, AV blocks ... treatment Remove potassium ... #Treatment #Algorithm
Causes of Hyperkalemia
l. Pseudohyperkalemia
  A Cellular efflux; thrombocytosis, erythrocytosis, leukocytosis, in vitro hemolysis
  B.
Beta-Adrenergic ... angiotensin receptor blockers ... inhibitors, ß-blockers ... Diagnosis #High #Potassium ... #Classification
Pragmatic diagnostic algorithm for hypokalemia. 
***Typical presentations: 
 • Vomiting: urine Na/Cl > 1.6, low urine
Pragmatic diagnostic algorithm ... correcting serum potassium ... angiotensin receptor blockers ... continued in most cases ... #differential #algorithm