Final answer:
The equivalent 24-hour dose of PO hydromorphone is calculated by multiplying the total dose of morphine by the conversion ratio.
Step-by-step explanation:
The equivalent 24-hour dose of PO hydromorphone can be calculated using the conversion ratio between morphine and hydromorphone. Generally, the conversion ratio is 1:6, which means 1 mg of hydromorphone is equivalent to 6 mg of morphine. In this case, the patient received a total 24-hr dose of morphine 180 mg PO. To find the equivalent dose of PO hydromorphone, we multiply 180 mg by the conversion ratio:
180 mg morphine x 6 mg hydromorphone/mg morphine = 1080 mg hydromorphone
Therefore, the equivalent 24-hour dose of PO hydromorphone is 1080 mg. None of the given options in the question match the correct answer.