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diagnosis differential algorithm management hyperkalemia hypokalemia low pathophysiology metabolic treatment workup kidney syndrome alkalosis neurology urine urology clinical complications cystic
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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 Hyperkalemia: Diagnostic algorithm Decreased renal potassium excretion • Acute renal failure • Chronic renal failure • Drugs Increased
• Acute renal ... diet • Blood ... Normal, Renin High ... hypoplasia Aldosterone high ... Diagnosis #algorithm #nephrology
Hypokalemia - Differential Diagnosis Algorithm Transcellular Shift: • Alkalosis • ↑ beta-2 adrenergic simulation • Erythropoiesis
Transcellular Shift ... Medications Renal ... Losses Non-renal ... Diagnosis #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 ... • IV Fluids Shift ... (if preserved renal ... peaks 1-2h) • Blood ... #nephrology
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 - Differential Diagnosis Framework PseudoHyperkalemia: • Lab error • Traumatic venipuncture • Hemolysis, thrombocytosis, leukocytosis •
phlebotomy High ... Intracellular Shift ... differential #diagnosis #causes ... #potassium #high ... #nephrology
Hyperkalemia - Differential Diagnosis Framework PseudoHyperkalemia: • Lab error • Traumatic venipuncture • Hemolysis, thrombocytosis, leukocytosis •
phlebotomy High ... Intracellular Shift ... differential #diagnosis #causes ... #potassium #high ... #nephrology
Hypokalemia Evaluation Algorithm Before evaluating hypokalemia, life threatening complications such as arrhythmias and paralysis should be looked
suggests extra-renal ... causes • Laxative ... urinary losses: • High ... Blood Pressure: ... #nephrology #low
Hypokalemia - Differential Diagnosis Algorithm Extra-renal Losses: • Normal Acid-Base: Low intake • Metabolic acidosis: Gl tract
Algorithm Extra-renal ... Syndrome • HTN, High ... Diagnosis #Algorithm #causes ... #potassium #low ... #nephrology
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 ... creatinine) • Cell shift ... effective arterial blood ... hypokalemia #urine #potassium ... algorithm #diagnosis #nephrology
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