The healthcare provider prescribes cefazolin 800 mg IM every...

The healthcare provider prescribes cefazolin 800 mg IM every six hours. The available vial is labeled, 'Cefazolin 1 gram,' and the instructions for reconstitution state, For IM use add 2.5 mL sterile water for injection to provide a total volume of 3.0 mL'. After reconstitution, the solution contains how many mg/mL? (Enter numeric value only. If rounding is required, round to the nearest whole number.)

Correct Answer: 333

Rationale: Concentration: 1000 mg / 3 mL = 333.333 mg/mL, rounded to 333.

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The healthcare provider prescribes ceftazidime 30 mg/kg/day for an infant weighing 3,500 grams. What dose should the nurse administer daily to this infant? (Enter numeric value only.)

Correct Answer: 105

Rationale: Weight: 3500 g = 3.5 kg. Dose: 30 mg/kg/day Ã— 3.5 = 105 mg/day.

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.

The healthcare provider prescribes amoxicillin 500 mg every 8 hours for a child who weighs 88 pounds. The recommended maximum safe dose is 50 mg/kg/24 hour. The available suspension is labeled, Amoxicillin Suspension 250 mg/5 mL. Based on this child weight, how many mL should the nurse administer ? (Enter numerical value only. (If rounding is required, round to the whole number.))

Correct Answer: 3

Rationale: Weight: 88 Ã— 0.454 = 39.952 kg. Max safe dose: 50 mg/kg/day Ã— 39.952 = 1997.6 mg/day. Per dose (3 doses/day): 1997.6 / 3 = 665.87 mg. Volume: 665.87 / (250 mg / 5 mL) = 2.6635 mL, rounded to 3 mL.

The healthcare provider prescribes filgrastim 5 mog/kg/day subcutaneously for a client who weighs 132 pounds and has just completed chemotherapy. The medication is available in 480 mcg/0.8 mL. How many mL should the nurse administer? (Enter numerical value only. If rounding is required, round to the nearest tenth.)

Correct Answer: 0.5

Rationale: Weight: 132 / 2.2 = 60 kg. Dose: 5 mcg/kg/day Ã— 60 = 300 mcg/day. Concentration: 480 mcg / 0.8 mL = 600 mcg/mL. Volume: 300 / 600 = 0.5 mL. [Note: Document states 500.0 mL, likely a typo; correct calculation yields 0.5 mL.]

The healthcare provider prescribes enoxaparin 1 mg/kg subcutaneously every 12 hours for a client who weighs 132 pounds. The medication is available in 60 mg/0.6 mL prefilled syringe. How many mL should the nurse administer per day? (Enter numerical value only.)

Correct Answer: 1.2

Rationale: Weight: 132 Ã— 0.454 = 59.928 kg. Dose: 1 mg/kg Ã— 59.928 = 59.928 mg. Volume per dose: (59.928 Ã— 0.6) / 60 = 0.59928 mL. Daily volume: 0.59928 Ã— 2 = 1.19856 mL, rounded to 1.20 mL.