Epidural Administration of Morphine for Cancer Pain via Portal System

경막외 Port 및 주입기를 이용한 지속적 모르핀 투여에 의한 암성 통증 조절

Background: Efficacy of spinal opioids for the treatment of intractable cancer pain has been reported by several authors. The epidural route seems to be a more reliable and effective method of pain control as compared to the intrathecal route which can lead to opioids by portal system. Methods: Medical records were reviewed of 18 patients who had been treated with epidural morphine via an implanted port-A-Cath from Mar. 1991 to Sep. 1994. Results: Patients were treated for a mean of 92 days. There were wide variation of dose requirements. The minimum daily dose ranged from 2 to 10mg, and maximum daily dose from 3 to 30 mg. Verbal rating scale were below moderate until 100th days after posrtal implantation. When 3 patients suffered from aggravated pain associated with vertebral metastasis. Five of 11 patients who were administered medication longer than 50 days reguired increased doses ranging from 3 mg to 25 mg which were higher as compared to initial doses. These patients also experienced pain due to vertebral metastasis. There were no report of epidural scarring, respiratory depression, epidural infections, meningitis, or catheter blockade. Conclusion: Continuous epidural morphine administration via Port-A-Cath is an effective method with minimal complication.