145 results
Antiarrhythmic Medications - Vaughan Williams Classification - Summary Table
Class I agents - Sodium Channel Blockers⠀
Class II
Antiarrhythmic Medications ... - Vaughan Williams ... Class III agents - Potassium ... EricsMedicalLectures/ #Antiarrhythmic
Hyperkalemia: Diagnostic algorithm
Decreased renal potassium excretion
 • Acute renal failure
 • Chronic renal failure
 • Drugs
Increased
Hyperkalemia: Diagnostic ... potassium excretion ... • Acute renal ... #Hyperkalemia #Diagnosis ... #algorithm #nephrology
Antiarrhythmics - Vaughan Williams Classification:
CLASS 1 - Sodium Channel Blockers:
 • MOA: Block fast Na+ channels
Antiarrhythmics ... - Vaughan Williams ... repolarization CLASS 3 - Potassium ... accpcardprn #Antiarrhythmics ... #Vaughan #Williams
Hypokalemia - Differential Diagnosis Algorithm

Transcellular Shift:
 • Alkalosis
 • ↑ beta-2 adrenergic simulation 
 • Erythropoiesis
- Differential Diagnosis ... Medications Renal ... Losses Non-renal ... #Algorithm #nephrology ... #low #potassium
Hyperkalemia Treatment Options
Stabilize cardiac membrane:
 • IV Calcium (peaks 5-10 minutes)
Decrease potassium concentration:
 • IV Fluids
Shift
minutes) Decrease potassium ... Fluids Shift potassium ... Sodium bicarbonate Potassium ... (if preserved renal ... #nephrology
Hypokalemia Differential Diagnosis Algorithm using Urine Potassium to Creatinine Ratio

#Hypokalemia #Differential #Diagnosis #Algorithm #Potassium #Creatinine #Ratio
Hypokalemia Differential Diagnosis ... Algorithm using Urine Potassium ... #Differential #Diagnosis ... #Algorithm #Potassium ... Creatinine #Ratio #nephrology
Hypokalemia - Differential Diagnosis Algorithm
Extra-renal Losses:
 • Normal Acid-Base: Low intake
 • Metabolic acidosis: Gl tract
- Differential Diagnosis ... Algorithm Extra-renal ... loss (Diarrhea) Renal ... Algorithm #causes #potassium ... #low #nephrology
Causes of Hyperkalemia

Hyperkalemia is caused by excess potassium intake, impaired potassium excretion, or transcellular shifts. The
caused by excess potassium ... intake, impaired potassium ... with impaired renal ... and underlying renal ... dysfunction is common #Diagnosis
Causes of Hyperkalemia - Differential Diagnosis Algorithm
 • Increased Intake
 • Reduced Excretion (IV potassium with
- Differential Diagnosis ... Excretion (IV potassium ... #Hyperkalemia #Nephrology ... #Differential #Diagnosis
Causes of Hypokalemia - Differential Diagnosis Algorithm
Defining the cause of hypokalemia starts by measuring urinary K
- Differential Diagnosis ... hypokalemia • Renal ... #differential #diagnosis ... algorithm #causes #nephrology ... #potassium