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A child with a seizure disorder receives a prescription for phenytoin 20 mg by mouth every 8 hours. The suspension is available in 125 mg/5 mL. How many mL should the nurse administer?(Enter the numerical value only. If rounding is required, round to the nearest tenth.)
Correct Answer: 0.8
Rationale: To find the answer, we can use the following formula: (mL to be administered) = (mg prescribed) / (mg per mL). Substituting the given values, we get: (mL to be administered) = (20) / (125 / 5). Simplifying, we get: (mL to be administered) = (20) x (5 / 125). (mL to be administered) = 0.8. Therefore, the nurse should administer 0.8 mL of phenytoin suspension to the child.
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A child is to receive vancomycin 40 mg/kg intravenously one hour before a scheduled procedure. The child weighs 44 pounds. How many mg of the medication should the nurse administer? (Enter numeric value only.)
Correct Answer: 800
Rationale: To find the answer, we can use the following steps: Convert the child's weight from pounds to kilograms by dividing by 2.2. Multiply the weight in kilograms by the dosage in mg/kg. Round the result to the nearest whole number. Using these steps, we get: (weight in kg) = (44) / (2.2) = 20. (dose in mg) = (40) x (20) = 800. (rounded dose in mg) = 800. Therefore, the nurse should administer 800 mg of vancomycin to the child.
A client is brought to the emergency center for fluid replacement after running a marathon, and the healthcare provider prescribes a 500 mL bolus of 0.9% normal saline to be administered over 4 hours. The infusion set delivers 10 gtt/mL, so the nurse should regulate the infusion to deliver how many gtt/minute? (Enter numerical value only. If rounding is required, round to the nearest whole number.)
Correct Answer: 21
Rationale: To find the answer, we can use the following formula: (gtt/min) = (mL/hour) x (gtt/mL) / 60. Substituting the given values, we get: (gtt/min) = (500 / 4) x (10) / 60. Simplifying, we get: (gtt/min) = 125 x 10 / 60. (gtt/min) = 20.833. (rounded gtt/min) = 21. Therefore, the nurse should regulate the infusion to deliver 21 gtt/minute of 0.9% normal saline.
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 required, round to the nearest tenth.)
Correct Answer: 0.7
Rationale: To find the answer, we can use the following steps: Convert the child's weight from pounds to kilograms by dividing by 2.2. Calculate the dose of filgrastim in mcg by multiplying the weight in kg by the dosage in mcg/kg/day. Divide the dose in mcg by the concentration of filgrastim in mcg/mL. Round the result to the nearest tenth. Using these steps, we get: (weight in kg) = (88) / (2.2) = 40 kg. (dose in mcg) = (5) x (40) = 200 mcg. (volume in mL) = (200) / (300) = 0.667 mL. (rounded volume in mL) = 0.7 mL. Therefore, the nurse should administer 0.7 mL of filgrastim to this child daily.
The nurse plans to provide the next shift with the IV fluid balance for a client who had a 440 mL secondary infusion that was started 2 hours ago at a rate of 85 mL/hour via an infusion pump. What is the remaining volume to be infused? (Enter numeric value only.)
Correct Answer: 270
Rationale: To find the answer, we can use the following formula: (remaining volume) = (initial volume) - (infused volume). Substituting the given values, we get: (remaining volume) = (440) - ((85 x 2)). Simplifying, we get: (remaining volume) = (440) - (170). (remaining volume) = 270. Therefore, the remaining volume to be infused is 270 mL.
A patient who weighs 91 kg receives a prescription for a continuous infusion of dopamine at 3 mcg/kg/min. The solution is labeled, “Dopamine 400 mg in 5% Dextrose injection 250 mL.†How many mL/hour should the nurse program the infusion pump to deliver?(Enter numeric value only. If rounding is required, round to the nearest tenth.)
Correct Answer: 10.2
Rationale: To determine the infusion rate in mL/hour for the dopamine solution: Calculate the total dose per minute: 3 mcg/kg/min × 91 kg = 273 mcg/min. Convert mcg/min to mcg/hour: 273 mcg/min × 60 min/hour = 16,380 mcg/hour. Convert mcg to mg: 16,380 mcg ÷ 1,000 = 16.38 mg/hour. Determine the concentration of the solution: 400 mg ÷ 250 mL = 1.6 mg/mL. Calculate the mL/hour required: 16.38 mg/hour ÷ 1.6 mg/mL = 10.2375 mL/hour. Rounded to the nearest tenth: 10.2 mL/hour.