Lab values & electrolytes worksheet with answers

Which findings are typical of a low serum magnesium?

1. ATremor, hyperreflexia and cardiac arrhythmias
2. BJaundice, itching and pale stools
3. CPolyuria, extreme thirst and pale urine
4. DLoss of reflexes, flushing and slow breathing

What is the typical range of urine pH?

1. AAbout 7.35–7.45
2. BAbout 9.0–11.0
3. CAbout 1.0–2.0
4. DAbout 4.5–8.0

When is a vancomycin trough level drawn?

1. AJust before the next dose, usually within 30 minutes of it
2. BImmediately after the infusion has finished running
3. CAt any convenient time of day, regardless of when the dose is due
4. DTwo hours after the start of the infusion

A patient has macrocytic anemia with numbness and tingling of the feet and poor balance. Which deficiency is most likely?

1. AFolate (folic acid)
2. BVitamin B₁₂
3. CIron (low ferritin)
4. DVitamin C (ascorbic acid)

A patient has a sodium of 124 mEq/L, a headache and new confusion. Which nursing measure is most appropriate?

1. APut seizure precautions in place and monitor neurological status
2. BEncourage the patient to drink plenty of plain water
3. CKeep the patient flat and limit neurological checks to once a shift
4. DGive the next dose of the prescribed thiazide diuretic early

Before giving prescribed IV potassium chloride, which assessment is most important?

1. AUrine output and kidney function
2. BSkin turgor on the forearm
3. CHearing in both ears
4. DPupil size and reaction to light

A patient with kidney stones and fatigue has a calcium of 11.6 mg/dL (2.9 mmol/L), a high parathyroid hormone (PTH) and a low phosphate. Which condition is most likely?

1. APrimary hyperparathyroidism
2. BVitamin D deficiency
3. CHypoparathyroidism
4. DCancer-related hypercalcemia

A patient with chronic kidney disease stage 4 has a high phosphate, a low-normal calcium and a very high parathyroid hormone (PTH). What does this show?

1. AHypoparathyroidism after neck surgery
2. BVitamin D toxicity from supplements
3. CSecondary hyperparathyroidism from CKD
4. DPrimary hyperparathyroidism from a tumor