Intravenous vs Oral Analgesia in Cancer Patients With Severe Pain After Successful Titration

Intravenous PCA with hydromorphone after successful titration of 24 hours. the PCA setting: 1) continuous dose = 0; 2) bolus dose = 10-20% of the total dosage of hydromorphone in the previous 24 hours: 3) lockout time = 10 minutes; 4) evaluate once every 24 hours

Intravenous PCA with hydromorphone after successful titration of 24 hours. the PCA setting: 1) continuous dose (dose/hours) = the total dosage of hydromorphone in the previous 24 hours/24; 2) bolus dose = 10-20% of the total dosage of hydromorphone in the previous 24 hours; 3) lockout time = 10 minutes; 4) evaluate once every 24 hours

"Swift to sustained-release morphine orally as background dose with immediate release morphine orally for breakthrough pain after successful titration of 24 hours.~Administration of morphine orally 1) Sustained-release morphine orally (dose/12 hours) = the total equianalgesic of the previous 24 hours/2×75% for d1; the total equianalgesic of the previous 24 hours/2 for day 2 and day 3; 2) Immediate release morphine orally = 10-20% of the total equianalgesic of the previous 24 hours; 3) Evaluate once every 24 hours"