Journal
PANCREAS
Volume 47, Issue 7, Pages 837-842Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/MPA.0000000000001094
Keywords
opioid analgesics; palliative care; pancreas
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Objectives Patients with pancreatic cancer generally experience increasing pain as their disease progresses, making the titration of opioids difficult. This study aimed to determine a correlation between prescribed opioid doses and survival time in patients with unresectable pancreatic cancer. Methods This retrospective observational cohort study in a tertiary care institution reviewed the medical records of patients diagnosed with unresectable pancreatic cancer and treated over a 10-year period. Results We screened 1152 patients with unresectable pancreatic cancer, and 566 were eligible for inclusion in this study. There was a statistically significant negative correlation between initial opioid dose and survival time from initial opioid dose (correlation coefficient, -0.184; P < 0.01) and survival time from initial pancreatic cancer diagnosis (correlation coefficient, -0.177; P < 0.01). In addition, there were 0.8% and 0.6% increases in initial opioid dosage (morphine equivalent daily dose) and rate of increasing opioid dose (morphine equivalent daily dose per month), respectively, associated with the risk of early death (180 days, P < 0.05). Conclusions Correlations between patient survival, initial opioid dose, final opioid dose, and the rate of increase of opioid dosage could provide useful information for clinicians treating unresectable pancreatic cancer patients.
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