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A nurse is preparing to administer fentanyl 0.5 mcg/kg via IV bolus to a client who weighs 187 lb. Available is fentanyl 50 mcg/mL. How many 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.)
A nurse is preparing to administer fentanyl 0.5 mcg/kg via IV bolus to a client who weighs 187 lb. Available is fentanyl 50 mcg/mL. How many 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 ["0.9"]
To calculate the dose of fentanyl for a client who weighs 187 lb, the nurse needs to convert the weight to kilograms and multiply it by the prescribed dose of 0.5 mcg/kg.
One kilogram is equal to 2.2 lb, so the client's weight in kilograms is 187 / 2.2 = 85 kg.
The dose of fentanyl in micrograms is 85 x 0.5 = 42.5 mcg.
The nurse then needs to divide the dose in micrograms by the concentration of fentanyl in the available solution, which is 50 mcg/mL.
The volume of fentanyl in milliliters is 42.5 / 50 = 0.85 mL.
The nurse should round the answer to the nearest tenth, so the final answer is 0.9 mL.
The nurse should administer 0.9 mL of fentanyl via IV bolus to the client.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["0.75"]
Explanation
To calculate the dosage of heparin, the nurse needs to use the following formula: D/H x V = A, where D is the desired dose, H is the dose on hand, V is the volume on hand, and A is the amount to administer.
In this case, D is 7,500 units, H is 10,000 units, and V is 1 mL. Plugging these values into the formula, we get:
7,500/10,000 x 1 = 0.75
Therefore, the nurse should administer 0.75 mL of heparin.
Correct Answer is ["1.2"]
Explanation
To calculate the dose of phenobarbital for this client, the nurse needs to convert the client's weight from pounds to kilograms.
One kilogram is equal to 2.2 pounds, so the nurse can divide 165 by 2.2 to get 75 kg.
Next, the nurse needs to multiply the client's weight by the prescribed dose of 2 mg/kg/day to get the total daily dose of phenobarbital.
This is 75 x 2 = 150 mg/day.
Since the dose is divided in 2 equal doses, the nurse needs to divide 150 by 2 to get the amount of phenobarbital per dose. This is 75 mg/dose.
Finally, the nurse needs to use the available concentration of phenobarbital to determine how many mL to administer per dose.
Calculate the volume of phenobarbital to administer: 75mg ÷ 65 mg/mL = 1.15 mL
Therefore, the nurse should administer 1.15 mL of phenobarbital per dose. Rounded off is 1.2ml.
Therefore, the nurse should administer 1.2 mL of phenobarbital per dose.
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