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diagnosis differential algorithm hypokalemia management hyperkalemia kidney clinical low pocus workup metabolic high hyponatremia acute aki pathophysiology treatment urine alkalosis
Causes of Hyperkalemia Hyperkalemia is caused by excess potassium intake, impaired potassium excretion, or transcellular shifts. The
Causes of Hyperkalemia ... by excess potassium ... transcellular shifts ... with impaired renal ... and underlying renal
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 Hypokalemia - Differential Diagnosis Algorithm Transcellular Shift: • Alkalosis • ↑ beta-2 adrenergic simulation • Erythropoiesis
Transcellular Shift ... Medications Renal ... Losses Non-renal ... Diagnosis #Algorithm #nephrology ... #low #potassium
Causes of Hyperkalemia - Differential Diagnosis Algorithm • Increased Intake • Reduced Excretion (IV potassium with
Causes of Hyperkalemia ... Excretion (IV potassium ... Transcellular Shift ... #Hyperkalemia #Nephrology ... Diagnosis #Algorithm #Causes
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 ... (if preserved renal ... #nephrology
Hyperkalemia: Diagnostic algorithm Decreased renal potassium excretion • Acute renal failure • Chronic renal failure • Drugs Increased
algorithm Decreased renal ... potassium excretion ... • Acute renal ... failure • Chronic renal ... Diagnosis #algorithm #nephrology
Approach to Hypomagnesemia Fractional excretion of magnesium = (urine magnesium x serum creatinine)/ [0.7 (serum magnesium
intake, Gl loss, shift ... cells FEMg >4% = renal ... magnesium loss if renal ... differential #diagnosis #causes ... #nephrology #magnesium
Causes of Hypokalemia - Differential Diagnosis Algorithm Increased Loss - Increased GI Loss - Increased Urinary
Causes of Hypokalemia ... Transcellular Shift ... Diagnosis #Algorithm #causes ... #potassium #low
Causes of Hypokalemia - Differential Diagnosis Algorithm Defining the cause of hypokalemia starts by measuring urinary K
Causes of Hypokalemia ... Defining the cause ... gastrointestinal K loss • Renal ... hypokalemia • Renal ... #nephrology #potassium
Hyperkalemia - Differential Diagnosis Framework PseudoHyperkalemia: • Lab error • Traumatic venipuncture • Hemolysis, thrombocytosis, leukocytosis •
• Recent IV potassium ... Intracellular Shift ... differential #diagnosis #causes ... #potassium #high ... #nephrology
Causes of Solid or Cystic Renal Mass - Differential Diagnosis Algorithm Solid Renal Mass: • Benign <3
Causes of Solid ... or Cystic Renal ... Algorithm Solid Renal ... Cystic #RenalMass #Nephrology ... Diagnosis #Algorithm #Causes
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