Lab values & electrolytes worksheet with answers

Which drug commonly causes a low serum potassium?

1. AFurosemide
2. BAmiloride
3. CSpironolactone
4. DLisinopril

Uric acid in the blood is a breakdown product of:

1. AGlucose
2. BFats
3. CHemoglobin
4. DPurines

In many US nursing references, what is the commonly cited therapeutic range for serum lithium in maintenance therapy?

1. AAbout 3.5–5.0 mEq/L
2. BAbout 2.0–3.0 mEq/L
3. CAbout 10–20 mEq/L
4. DAbout 0.6–1.2 mEq/L

Which factor is most likely to raise a patient’s lithium level?

1. AEating more salt than usual for several days
2. BTaking each dose with a meal instead of before
3. CDrinking more fluid than usual in hot weather
4. DDehydration or a sudden drop in sodium intake

A nurse completed the hepatitis B vaccine series. Which result shows protective immunity?

1. AA positive IgM anti-HBc
2. BA positive HBsAg test
3. CA raised ALT level
4. DAnti-HBs of 10 mIU/mL or more

A patient has weight loss, tremor and heat intolerance. Which thyroid test pattern fits Graves disease?

1. AHigh TSH with a low free T₄
2. BLow TSH with a high free T₄
3. CHigh TSH with a normal free T₄
4. DNormal TSH with a low free T₄

A patient on digoxin has a calcium of 12.1 mg/dL (3.0 mmol/L) and new nausea and a slow pulse. Why is the calcium result important?

1. AHigh calcium makes the kidneys clear digoxin faster
2. BHigh calcium only matters if the potassium is also high
3. CHigh calcium increases the risk of digoxin toxicity
4. DHigh calcium blocks digoxin, so the drug stops working

The nurse teaches a patient who is starting warfarin. Which statement shows a need for further teaching?

1. A"If I miss a dose, I will take two tablets the next day"
2. B"I will have my INR checked as often as I am told to"
3. C"I will keep my intake of green leafy vegetables about the same"
4. D"I will tell my dentist and pharmacist that I take warfarin"