A nurse is set to administer darbepoetin at a dosage of 0.45 mcg/kg subcutaneously once weekly to a patient who weighs 198 lbs.
The available darbepoetin is 300 mcg/mL. What volume (in mL) should the nurse administer? (Round the answer to the nearest tenth.
Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["0.1"]
Step 1 is 198 lbs ÷ 2.2 = 90 kg
Step 2 is 90 kg × 0.45 mcg = 40.5 mcg
Step 3 is 40.5 mcg ÷ (300 mcg ÷ 1 mL) = 0.135 mL
Answer: 0.1 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["83"]
Explanation
Step 1: Convert 1g of cefazolin to mg. We know that 1g = 1000mg. So, 1g of cefazolin is 1000mg.
Step 2: Calculate the total volume of the solution. We have 1000mg of cefazolin in 250mL of 0.9% sodium chloride. So, the total volume of the solution is 250mL.
Step 3: Calculate the time for the infusion. We are told that the infusion should be over 30 minutes. So, the time for the infusion is 30 minutes.
Step 4: Calculate the drop factor. We are told that the drop factor on the manual IV tubing is 10 gtt/mL. So, the drop factor is 10 gtt/mL.
Step 5: Calculate the flow rate. The flow rate is calculated by dividing the total volume of the solution by the time for the infusion, and then multiplying by the drop factor. So, the flow rate is (250mL ÷ 30min) × 10 gtt/mL.
Step 6: Round the answer to the nearest whole number. The calculated flow rate is 83.33 gtt/min. When rounded to the nearest whole number, the flow rate is 83 gtt/min.
Correct Answer is ["25"]
Explanation
Step 1: Calculate the total volume of the IV solution. The available clindamycin is 1,200 mg in dextrose 5% in water 100 mL. So, the total volume is 100 mL.
Step 2: Calculate the time for the IV bolus. The medication will be given over 1 hour. So, the time is 60 minutes.
Step 3: Calculate the flow rate in mL/min. The flow rate is the total volume divided by the time. So, the flow rate is 100 mL ÷ 60 min = 1.67 mL/min.
Step 4: Calculate the flow rate in gtt/min. The drop factor on the manual IV tubing is 15 gtt/mL. So, the flow rate in gtt/min is 1.67 mL/min × 15 gtt/mL = 25 gtt/min. Therefore, the nurse should set the flow rate to deliver 25 gtt/min.
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