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Hyperkalemia - Differential Diagnosis Framework

PseudoHyperkalemia:
 • Lab error
 • Traumatic venipuncture
 • Hemolysis, thrombocytosis, leukocytosis
 •
Hyperkalemia - Differential ... Suspicion for Hyperkalemia ... injury • Blood transfusion ... Hemolysis - Transfusion ... Blood transfusion
Hyperkalemia - Differential Diagnosis Framework

PseudoHyperkalemia:
 • Lab error
 • Traumatic venipuncture
 • Hemolysis, thrombocytosis, leukocytosis
 •
Hyperkalemia - Differential ... Suspicion for Hyperkalemia ... injury • Blood transfusion ... Hemolysis - Transfusion ... Blood transfusion
Blood Product Transfusions One Pager Summary
Type and screen - determines blood type and detects in recipient
Blood Product Transfusions ... Transfusion Thresholds ... Non-Hemolytic Transfusion ... - Transfusion ... Hypocalcemia, Hyperkalemia
Causes of HyperKalemia - Differential Diagnosis
Increased extracellular K+:
 • Tissue injury
 • Hemolysis
 • Rhabdomyolysis
 •
Causes of HyperKalemia ... intake • Blood transfusion ... MCW_Nephrology #HyperKalemia
Hyperkalemia: Diagnostic algorithm
Decreased renal potassium excretion
 • Acute renal failure
 • Chronic renal failure
 • Drugs
Increased
Hyperkalemia: Diagnostic ... diet • Blood transfusion ... • Type 1 #Hyperkalemia
Blood Transfusion Reactions

Immune Mediated:
 • Febrile Non-Hemolytic Transfusion Reaction (FNHTR): Most common immune reaction to transfusion.
Blood Transfusion ... Non-Hemolytic Transfusion ... immune reaction to transfusion ... • Transfusion ... Hypocalcemia, Hyperkalemia
Causes of Hyperkalemia
Pseudohyperkalemia
 - Tourniquet use
 - Hemolysis (in vitro)
 - Leukocytosis
 - Thrombocytosis
Intra- to extracellular
Causes of Hyperkalemia ... intoxication - Hyperkalemic ... Potassium-containing drugs - Transfusion ... acidosis) #Hyperkalemia
Hyperkalemia - Diagnosis and Management - GrepMed Handbook

S/Sx: Most pts asymptomatic. Weakness, cramping, nausea, paresthesias, palpitations,
Hyperkalemia - Diagnosis ... ischemia, hemolysis, transfusions ... - Diuresis (hypervolemia ... management of hyperkalemia ... #Hyperkalemia
Leukostasis vs Tumor Lysis Syndrome
Leukostasis:
 • Pathophysiology: Large, immature blasts and high WBC count cause hyperviscosity
Diuretics, PRBC transfusion ... hydration - Hyperkalemia
Major Clinical Trials and Evidence Summary for Transfusion Thresholds in Critical Care

TRICC - NEJM 1999 -
Evidence Summary for Transfusion ... show that PRBC transfusions ... Unnecessary transfusions ... Transfusions should ... Transfusions are