Pancreatic cancer survivorship: Intrathecal drug delivery system for pain management

Abstract

14100 Background: Pancreatic cancer is predominantly unresectable at diagnosis and is most frequently fatal. Nationally the average survivorship is 10 months. Among pancreatic cancer patients, pain is associated with decreased survival rates. Quality of life and survivorship are the principal outcome measures for these patients. Successful pain management may be a significant predictor of prolonged survivorship. No study has demonstrated an impact on survivorship secondary to the treatment of pancreatic cancer pain and the use of Intrathecal Drug Delivery Systems (IDDS). Methods: A retrospective chart review identified all pancreatic cancer patients treated at a cancer pain treatment center between January 2002 and June 2005. 43 patients had known dates of diagnosis and known dates of death. The Arizona Department of Health Services Cancer Registry provided similar information for pancreatic cancer patients residing in Maricopa County for that time period. 713 Maricopa county residents had known dates of diagnosis and known dates of death. Results: Among the Maricopa County pancreatic cancer patients, the mean survivorship was 5 months. Among the treatement center patients who did not receive the IDDS for pain, 10 (23.3%), the mean survivorship was 10.8 months. Among the pancreatic cancer patients receiving IDDS for pain management, 33 (76.7%), the mean survivorship was 14.2 months. Mean survivorship among the treatment center patients receiving IDDS for pain management is nearly 3 times greater than the general survivorship of pancreatic cancer patients in Maricopa County. Among the treatement center patients the mean survivorship is nearly 50% greater for patients receiving IDDS versus those that did not. Conclusions: The implantable IDDS for pain management among pancreatic cancer patients may be a significant predictor of increased survivorship. A larger sample size may be needed to detect significant differences in survivorship. Controlled studies examining survivorship as the primary outcome for patients with unresectable pancreatic cancer by evaluating the implantable IDDS as compared to usual care modalities such as comprehensive medical management (CMM) or neurolytic celiac plexus block (NCPB) for pain management are warranted. No significant financial relationships to disclose.