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Phosphate Disorders

Quiz by Heather Powell

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12 questions
Show answers
  • Q1
    Which of the following is NOT associated with the development of hyperphosphatemia?
    Acidosis
    Hypoparathyroidism
    Hypothyroidism
    Rhabdomyolysis
    30s
  • Q2
    True or False: Acute hyperphosphatemia presents as renal osteodystrophy due to PTH overproduction.
    False
    True
    30s
  • Q3
    Which of the following are the criteria for administration of IV calcium for hyperphosphatemia?
    Phos > 8 AND symptomatic
    Phos > 6.0 and corrected calcium < 8
    Phos >4.5 AND symptomatic
    Phos > 7 AND corrected calcium < 7.5 AND symptomatic
    30s
  • Q4
    Which of the following is the first intervention for hyperphosphatemia?
    Non-elemental phosphate binder
    IV calcium
    Calcium-containing phosphate binder
    Dietary phosphate restriction
    30s
  • Q5
    Which of the following foods is low in dietary phosphate?
    Meats
    Dairy
    Dried beans
    Leafy greens
    30s
  • Q6
    True or False: Phosphate binders must be dosed with meals because they bind dietary phosphate and prevent phosphate absorption while promoting fecal phosphate excretion.
    False
    True
    30s
  • Q7
    What is an appropriate starting dose of calcium carbonate for hyperphosphatemia?
    500 mg PO TID
    500 mg elemental PO TID with meals
    800 mg PO TID
    169 mg elemental PO TID with meals
    30s
  • Q8
    All of the following cause hypophosphatemia due to poor GI absorption except:
    Chronic Diarrhea
    Alcohol abuse
    Phosphate binder overuse
    Refeeding syndrome
    30s
  • Q9
    Which of the following medications is NOT known to cause hypophosphatemia due to reduced renal tubular reabsorption?
    Prednisone
    Lithium
    Sodium bicarbonate
    Mannitol
    30s
  • Q10
    Which of the following is an appropriate treatment option for hypophosphatemia due to hyperparathyroidism?
    PO phosphate
    Calcitonin
    IV phosphate
    Cinacalcet
    30s
  • Q11
    When should IV phosphate be given?
    Phos 1.6-2.5 and symptomatic
    Phos <1.6 mg/dL or symptomatic
    Phos 1.6-2.5 and asymptomatic
    30s
  • Q12
    Phosphate dosing should be reduced by ________% with AKI or CrCl < _______ ml/min
    50, 60
    50, 30
    25, 30
    25, 60
    30s

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