152 results
Hyperkalemia: Diagnostic algorithm
Decreased renal potassium excretion
 • Acute renal failure
 • Chronic renal failure
 • Drugs
Increased
Decreased renal potassium ... Drugs Increased potassium ... (oral/iv) • Potassium-rich ... Hyporeninemic, hypoaldosteronism ... High: • Primary hypoaldosteronism
Causes of Hypokalemia - Differential Diagnosis Algorithm
Defining the cause of hypokalemia starts by measuring urinary K
secondary or primary hyperaldosteronism ... syndrome • Primary Hyperaldosteronism ... • Secondary Hyperaldosteronism ... tumor • Pseudo-hyperaldosteronism ... causes #nephrology #potassium
Hypokalemia Differential Diagnosis Algorithm
Hypertensive:
 • High Al, Low R - Primary aldosteronism
 • High Al, High
R - Secondary Hyperaldosteronism ... Low R - Pseudo-hyperaldosteronism ... #causes #low #potassium
Causes of Metabolic Alkalosis - Differential Diagnosis
Chloride depletion syndromes
 • Gastrointestinal losses
    -
syndromes • Primary hyperaldosteronism ... syndrome • Severe potassium ... depletion (serum potassium
Hyperkalemia - Differential Diagnosis Framework

PseudoHyperkalemia:
 • Lab error
 • Traumatic venipuncture
 • Hemolysis, thrombocytosis, leukocytosis
 •
• Recent IV potassium ... Addison’s disease/Hypoaldosteronism ... hyporeninemic hypoaldosteronism ... diagnosis #causes #potassium
Hyperkalemia - Differential Diagnosis Framework

PseudoHyperkalemia:
 • Lab error
 • Traumatic venipuncture
 • Hemolysis, thrombocytosis, leukocytosis
 •
• Recent IV potassium ... Addison’s disease/Hypoaldosteronism ... hyporeninemic hypoaldosteronism ... diagnosis #causes #potassium
Hypokalemia - Differential Diagnosis Algorithm
Extra-renal Losses:
 • Normal Acid-Base: Low intake
 • Metabolic acidosis: Gl tract
tumor, Primary hyperaldosteronism ... Algorithm #causes #potassium
Algorithm for patients with hypokalemia on the basis of the potassium-to-creatinine ratio in the urine
Urine K+
the basis of the potassium-to-creatinine ... Glucocorticoid suppressible hyperaldosteronism ... hypokalemia #urine #potassium
Causes of Metabolic Alkalosis: Differential Diagnosis
ECF volume contracted: urine chloride concentration <20 meq/L
 • Gastric alkalosis:
/L • Primary hyperaldosteronism ... glucocorticoid-sensitive hyperaldosteronism ... other • Severe potassium
Causes of Hyperkalemia - Differential Diagnosis Framework
 • Cellular Shift:
   - Exercise
Excretion: - Hypoaldosteronism ... Diagnosis #Causes #potassium