Lab values & electrolytes worksheet with answers

Free printable Lab values & electrolytes worksheet: 8 problems from easy to exam level, with an answer key. Print it or save it as a PDF.

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Name: ____________________   Date: ____________

1.Easy

A serum potassium of 5.9 mEq/L is called:

  1. AHyperkalemia
  2. BHypercalcemia
  3. CHypernatremia
  4. DHypokalemia
2.Easy

What is the main effect of parathyroid hormone (PTH) on serum calcium?

  1. AIt lowers serum calcium
  2. BIt only changes urine calcium
  3. CIt raises serum calcium
  4. DIt has no effect on calcium
3.Easy

Which ECG change is typical of hypokalemia?

  1. ADelta waves and a short PR interval
  2. BTall, peaked T waves and a wide QRS
  3. CFlattened T waves and prominent U waves
  4. DST elevation in two or more neighboring leads
4.Medium

A patient receiving chemotherapy has an ANC of 300/µL and a new temperature of 38.3 °C (100.9 °F). What should the nurse do first?

  1. AEncourage oral fluids and record the fever in the chart
  2. BRemove extra blankets and offer a tepid sponge bath
  3. CGive acetaminophen (paracetamol) and recheck the temperature in 4 hours
  4. DReport it at once so cultures and antibiotics start quickly
5.Medium

A patient taking warfarin for atrial fibrillation has an INR of 5.2 and no bleeding. What is the nurse’s best action?

  1. AHold the warfarin dose and inform the prescriber
  2. BGive the usual dose and recheck in a month
  3. CAdvise the patient to stop eating green vegetables from today
  4. DGive a double dose
6.Medium

A patient takes low-dose methotrexate weekly for rheumatoid arthritis. Which laboratory tests are monitored regularly?

  1. ASerum amylase, lipase and blood ketones
  2. BSerum lithium, sodium and urine specific gravity
  3. CComplete blood count, liver tests and kidney function
  4. DTroponin, creatine kinase and myoglobin
7.Hard

A young man has a swollen knee after minor trauma. His aPTT is prolonged, but his PT/INR and platelet count are normal. Which condition fits best?

  1. AImmune thrombocytopenia (ITP)
  2. BDisseminated intravascular coagulation
  3. CVitamin K deficiency from poor diet
  4. DHemophilia A (factor VIII deficiency)
8.Hard

A patient's results: sodium 140 mEq/L, chloride 100 mEq/L, bicarbonate 12 mEq/L. What is the anion gap, and what does it suggest?

  1. A52 mEq/L, a very high anion gap
  2. B12 mEq/L, a normal anion gap
  3. C28 mEq/L, a high anion gap
  4. D40 mEq/L, a high anion gap

Answer key

  1. 1. A · Hyperkalemia
  2. 2. C · It raises serum calcium
  3. 3. C · Flattened T waves and prominent U waves
  4. 4. D · Report it at once so cultures and antibiotics start quickly
  5. 5. A · Hold the warfarin dose and inform the prescriber
  6. 6. C · Complete blood count, liver tests and kidney function
  7. 7. D · Hemophilia A (factor VIII deficiency)
  8. 8. C · 28 mEq/L, a high anion gap

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