42 使用病人自控式止痛劑(Patient-controlled analgesia, PCA)時,若病人需要由 morphine 轉換為hydromorphone,應如何轉換?
(A) Morphine 10 mg/hour=hydromorphone 1 mg/hour
(B) Morphine 20 mg/hour=hydromorphone 1 mg/hour
(C) Morphine 10 mg/hour=hydromorphone 2 mg/hour
(D) Morphine 1 mg/hour=hydromorphone 10 mg/hour