Werkblad Laboratoriumwaarden en elektrolyten met antwoorden

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Naam: ____________________   Datum: ____________

1.Makkelijk

Why is prealbumin (transthyretin) sometimes used to follow a patient's nutritional status instead of albumin?

  1. AIt has a short half-life, so it changes within days
  2. BIt is measured in urine, so no blood test is needed
  3. CIt has a long half-life, so it changes over months
  4. DIt is not affected by inflammation or liver disease
2.Makkelijk

What is a "critical value" (panic value) in laboratory reporting?

  1. AA result so abnormal that it may threaten life and needs prompt action
  2. BA result that is normal but differs from the patient's last value
  3. CAny result that is slightly outside the laboratory reference range
  4. DA result that the laboratory could not measure because of a bad sample
3.Makkelijk

Where is urea, measured as blood urea nitrogen (BUN), made?

  1. AIn the kidneys, from the breakdown of glucose
  2. BIn the bone marrow, from old red blood cells
  3. CIn the liver, from the breakdown of protein
  4. DIn the muscles, from the breakdown of creatine
4.Gemiddeld

A patient takes valproate (valproic acid) for epilepsy. Which tests are monitored regularly?

  1. ALiver function tests and platelet count
  2. BSerum lithium and urine specific gravity
  3. CTroponin and B-type natriuretic peptide
  4. DThyroid function and serum calcium
5.Gemiddeld

A patient with chronic kidney disease receives an erythropoiesis-stimulating agent such as epoetin alfa. Which assessments are most important?

  1. ASerum glucose and ketones
  2. BLiver enzymes and bilirubin
  3. CSerum amylase and lipase
  4. DHemoglobin and blood pressure
6.Gemiddeld

How often is the INR usually checked when warfarin is first started?

  1. AOnly if bleeding occurs at home
  2. BOnce a year, at a routine visit
  3. CEvery few days, until it is stable
  4. DEvery hour, during the first week
7.Moeilijk

A trauma patient receives many units of blood quickly and then develops muscle twitching and low blood pressure. Which laboratory value is most likely to explain this?

  1. AA low serum glucose
  2. BA high serum magnesium
  3. CA low ionized calcium
  4. DA high serum sodium
8.Moeilijk

Two sets of blood cultures were taken from separate sites. Only one bottle in one set grows coagulase-negative staphylococci, and the patient has no line or implant. What is the most likely interpretation?

  1. AProbable skin contamination of the sample
  2. BInfection with a resistant organism such as MRSA
  3. CProof that the patient has infective endocarditis
  4. DCertain bloodstream infection needing treatment

Antwoordenblad

  1. 1. A · It has a short half-life, so it changes within days
  2. 2. A · A result so abnormal that it may threaten life and needs prompt action
  3. 3. C · In the liver, from the breakdown of protein
  4. 4. A · Liver function tests and platelet count
  5. 5. D · Hemoglobin and blood pressure
  6. 6. C · Every few days, until it is stable
  7. 7. C · A low ionized calcium
  8. 8. A · Probable skin contamination of the sample

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