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The primary healthcare provider (PHCP) prescribes lidocaine at 2 mg/min. The medication label reads lidocaine 1 gram in 500 mL of 0.9% saline. How many mL per hour will the nurse administer to the client? Fill in the blank.
Correct Answer: 60 mL/hr
Rationale: Convert: 1 g = 1000 mg, so 1000 mg/500 mL = 2 mg/mL. Flow rate: (2 mg/min ÷ 2 mg/mL) × 60 min/hr = 60 mL/hr.
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The primary healthcare provider (PHCP) prescribes magnesium sulfate at 2 grams/hour. The nurse has magnesium sulfate 20 grams in 500 mL of 0.9% saline on hand. How many mL per hour will the nurse administer? Fill in the blank.
Correct Answer: 50 mL/hr
Rationale: Calculate: (2 g/hr ÷ 20 g) × 500 mL = 50 mL/hr.
The primary healthcare provider (PHCP) prescribes cefdinir 25 mg/kg/day in divided doses every six hours. The infant weighs 8 kg (17.6 lbs). How many milligrams should the nurse administer per dose? Fill in the blank. Round your answer to a whole number.
Correct Answer: 50 mg
Rationale: Calculate daily dose: 25 mg/kg × 8 kg = 200 mg. Four doses per day: 200 mg ÷ 4 = 50 mg per dose.
The primary healthcare provider orders methylprednisolone 1.6 mg/kg for a child weighing 30.4 kg (66.8 lbs). The label on the medication reads 500 mg/4 mL. How many milliliters (mL) should the nurse administer? Fill in the blank. Round your answer using 1 decimal place.
Correct Answer: 0.4 mL
Rationale: Calculate dose: 1.6 mg/kg × 30.4 kg = 48.64 mg. Convert: (48.64 mg ÷ 500 mg) × 4 mL = 0.39 mL, rounded to 0.4 mL.
The primary healthcare provider (PHCP) prescribes one liter of 0.9% saline to infuse over 6 hours. How many mL per hour will the nurse administer to the client? Fill in the blank. Round your answer to the nearest whole number.
Correct Answer: 167 mL/hr
Rationale: Convert 1 liter to 1000 mL. Divide by 6 hours: 1000 mL ÷ 6 hr = 166.67 mL/hr, rounded to 167 mL/hr.
The primary healthcare provider (PHCP) prescribes 500 mg of intravenous (IV) metronidazole to be administered over thirty minutes. The pharmacy supplies the medication in a bag labeled 500 mg of metronidazole in 100 mL of 0.9% saline. How many mL/hour should the nurse administer to the client? Fill in the blank.
Correct Answer: 200 mL/hr
Rationale: Convert 30 minutes to 0.5 hours. Flow rate: 100 mL ÷ 0.5 hr = 200 mL/hr.