The healthcare provider prescribes magnesium hydroxide 4800...

The healthcare provider prescribes magnesium hydroxide 4800 mg by mouth at bedtime for a client with constipation. The bottle is labeled 'Magnesium Hydroxide Saline Laxative, USP 400 mg per 5 mL.' How many ounces should the nurse instruct the client to take with each dose? (Enter numerical value only.)

Correct Answer: 0.41

Rationale: Volume: 4800 mg / (400 mg / 5 mL) = 12 mL. Convert to ounces: 12 Ã— 0.033814 = 0.405768 oz, rounded to 0.41 oz.

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A 4-year-old is admitted with croup and receives a prescription for a single dose of dexamethasone 0.6 mg/kg IM. The child weighs 35 pounds. How many mg should the nurse administer? (Enter numerical value only. If rounding is required, round to the nearest whole number.)

Correct Answer: 10

Rationale: Convert weight: 35 pounds Ã— 0.454 kg/pound = 15.89 kg (rounded to 16 kg). The dose is 0.6 mg/kg, so 16 Ã— 0.6 = 9.6 mg, rounded to 10 mg.

The healthcare provider prescribes metoclopramide 7.5 mg/mL IM every 3 hours PRN vomiting for a client who is receiving chemotherapy. The nurse prepares an injection using a 2 ml. prefilled syringe cartridge labeled, 'metoclopramide 5 mg/mL.' How many mL should the nurse administer? (Enter numeric value only. If rounding is required, round to the nearest tenth.)

Correct Answer: 1.5

Rationale: Volume = 7.5 mg / 5 mg/mL = 1.5 mL.

A client who weighs 60 kg receives a prescription for dalteparin 200 units/kg subcutaneously once a day for a month. The medication is available in 25,000 units/mL vial. How many mL should the nurse administer? (Enter numerical value. If rounding is required, round to the nearest tenth.)

Correct Answer: 0.5

Rationale: Dose: 200 units/kg Ã— 60 = 12000 units. Volume: 12000 / 25000 = 0.48 mL, rounded to 0.5 mL.

Filgrastim 5 mcg/kg/day subcutaneous is prescribed for a child with cancer who weighs 88 pounds. The medication is labeled 300 mcg/mL. How many mL should the nurse administer daily to this child? (Enter the numerical value only. If rounding is required, round to the nearest tenth.)

Correct Answer: 0.7

Rationale: Weight: 88 Ã— 0.454 = 39.952 kg. Dose: 5 mcg/kg/day Ã— 39.952 = 199.76 mcg/day. Volume: 199.76 / 300 = 0.66587 mL, rounded to 0.7 mL.

The nurse is initiating a 500 mL IV of normal saline at 60 mL/hour for a client with heart failure. How many hours should the IV infuse? (Enter numeric value only. If rounding is required, round to the nearest tenth.)

Correct Answer: 8.3

Rationale: Duration = 500 mL / 60 mL/hour = 8.333 hours, rounded to 8.3.