11 results
Antiarrhythmic Medications - Vaughan Williams Classification - Summary Table
Class I agents - Sodium Channel Blockers⠀
Class II
Vaughan Williams Classification ... - Summary Table ... are beta blockers ... #Medications #Classification ... #Summary #Table
Antiarrhythmics - Vaughan Williams Classification:
CLASS 1 - Sodium Channel Blockers:
 • MOA: Block fast Na+ channels
Vaughan Williams Classification ... 2 - Beta Blockers ... of phase 4 to slow ... alpha & beta adrenergic ... #Pharmacology #Classification
Causes of Hyperkalemia - Reduced Excretion - Differential Diagnosis Algorithm

Reduced flow through distal nephron - TTKG
Differential Diagnosis Algorithm ... Aldosterone • ENaC blockers ... nephropathy • Beta ... #Hyperkalemia #IntercellularShift ... Differential #Diagnosis #Algorithm
Antiarrhythmics Pharmacology Summary
Cardiac Conduction Phases:
Phase 0 - Ventricular Depolarization:
 • Na+ channels open leading to a
open leading to slow ... Vaughan Williams Classification ... 2 - Beta Blockers ... alpha & beta adrenergic ... #Pharmacology #Classification
The Diagnostic Approach to Hyperkalemia
Drugs
 - Amiloride
 - Spironolactone
 - Triamterene
 - Trimethoprim
 - Pentamidine
 -
inhibitors Other causes ... Ketoconazole Low ... - NSAlDs - Beta-Blockers ... #Hyperkalemia #Algorithm ... #differential #causes
Causes of Hypomagnesemia - Differential Diagnosis Algorithm
GI LOSS - FeMg < 2-2.5% or 24h Urine Mg
Differential Diagnosis Algorithm ... Na-KATPase, EGFR,HNF-1beta ... Hypomagnesemia #Magnesium ... #Low #Causes #Differential ... #Diagnosis #Algorithm
Hypomagnesemia - Etiologies by Mechanism

Decreased GI Uptake 
 - Poor dietary intake (particularly common in alcoholics)
Excessive GI losses ... Differential #Diagnosis #Low ... #Magnesium #Table ... #Classification ... #Causes #Workup
Causes of Hyperkalemia - Intercellular Shift - Differential Diagnosis Algorithm
Transcellular Shift - Appropriate renal excretion (GFR,
Differential Diagnosis Algorithm ... , TTKG, distal flow ... Resistance • Beta ... #Hyperkalemia #IntercellularShift ... Differential #Diagnosis #Algorithm
Causes of Hypokalemia - Differential Diagnosis Algorithm
Decreased intake (rare cause in isolation)
GI loss - Urine loss
Differential Diagnosis Algorithm ... • Insulin • Beta ... Gittelman's syndrome • Magnesium ... Differential #Diagnosis #Algorithm ... #Causes
Causes of Hyperkalemia
l. Pseudohyperkalemia
  A Cellular efflux; thrombocytosis, erythrocytosis, leukocytosis, in vitro hemolysis
  B.
Causes of Hyperkalemia ... Beta-Adrenergic ... Drug-associated: heparin, low-molecular-weight ... High #Potassium #Classification ... #Causes