A nurse is preparing to administer fentanyl 50 mcg IM to a client. Available is fentanyl 0.05 mg/mL. How many ml should the nurse administer per dose?
(Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["1"]
To answer this question, you need to convert the dosage of fentanyl from micrograms (mcg) to milligrams (mg). One milligram is equal to 1000 micrograms, so 50 mcg is equal to 0.05 mg. Then, you need to use the formula D/H x Q, where D is the desired dose, H is the dose on hand, and Q is the quantity. In this case, D is 0.05 mg, H is 0.05 mg/mL, and Q is the volume in milliliters. Plugging these values into the formula, you get:
0.05 mg / 0.05 mg/mL x Q
Q = 1 mL
Therefore, the nurse should administer 1 mL of fentanyl per dose.
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Related Questions
Correct Answer is ["1.9"]
Explanation
To calculate the dose of dexamethasone, we need to convert the client's weight from pounds to kilograms. One pound is equal to 0.454 kg, so 132 lb is equal to 132 x 0.454 = 59.928 kg. The prescribed dose is 0.5 mg/kg/day, so the daily dose is 0.5 x 59.928 = 29.964 mg. This dose is divided equally every 6 hours, so the dose per administration is 29.964 / 4 = 7.491 mg. The concentration of the drug is 4 mg/mL, so the volume per administration is 7.491 / 4 = 1.873 mL. Rounded to the nearest tenth, the nurse should administer 1.9 mL per dose.
Correct Answer is B
Explanation
A. The medication is for IV administration: This cannot be assumed unless the label specifically states “for intravenous use.” Phenytoin comes in multiple formulations (oral suspension, tablets, IV), so route must be verified.
B. The total amount available per container is 4 mL: This is label-specific information. If the label indicates that each vial contains 4 mL, this is a factual and critical point to ensure accurate dosing.
C. The nurse should avoid shaking the medication: While some medications (e.g., suspensions) should not be shaken vigorously, phenytoin IV solution is not a suspension, and this instruction may not apply to all forms.
D. The medication should not be stored below 30°C (86°F): This is incorrect. Phenytoin should be stored at controlled room temperature, typically 20°C to 25°C (68°F to 77°F), and protected from excessive heat or cold.
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