Difficulty: Medium
Average Score: 69%
Simulated
A nurse is preparing to administer methylnaltrexone 12 mg subcutaneously to a client who has opioid-induced constipation. Available is methylnaltrexone 8 mg/0.4 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.)
Correct answer
A
Rationale
To calculate the amount of methylnaltrexone needed, divide the desired dose (12 mg) by the available concentration (8 mg/0.4 mL): 12 mg ├À 8 mg/0.4 mL = 1.5 mL. The answer must be rounded to the nearest tenth, making it 1.5 mL, which is equivalent to 0.5 mL. Therefore, the nurse should administer 0.6 mL. Choices B, C, and D are incorrect as they do not reflect the correct calculation. Choice E, F, and G are not applicable.