Incidence of Delirium Among Patients Having Cancer Injected With Different Opioids for the First Time

Author:

Tanaka Rei1,Ishikawa Hiroshi1,Sato Tetsu1,Shino Michihiro1,Matsumoto Teruaki2,Mori Keita3,Omae Katsuhiro3,Osaka Iwao4

Affiliation:

1. Department of Pharmacy, Shizuoka Cancer Center, Sunto-gun, Shizuoka, Japan

2. Department of Psycho-Oncology, Shizuoka Cancer Center, Sunto-gun, Shizuoka, Japan

3. Clinical Research Promotion Unit of Clinical Research Center, Shizuoka Cancer Center, Sunto-gun, Shizuoka, Japan

4. Department of Palliative Medicine, Shizuoka Cancer Center, Sunto-gun, Shizuoka, Japan

Abstract

Background: Despite the risk of drug-induced delirium, it is difficult to avoid the use of opioids in palliative care. However, no previous study has carefully investigated how the development of delirium varies among patients injected with different opioids for the first time. Objectives: To reveal the difference in the incidence of delirium between different opioids. Design: The incidence of delirium was compared among 114 patients who had started morphine, oxycodone, or fentanyl injection at Shizuoka Cancer Center between June 2012 and September 2014. Results: The incidence of delirium was 28.9% in the morphine group (n = 38), 19.5% in the oxycodone group (n = 41), and 8.6% in the fentanyl group (n = 35). There was a significant difference between the morphine and fentanyl groups (Fisher’s exact test, P = 0.04) but not between the morphine and oxycodone groups (P = 0.43) nor between the oxycodone and fentanyl groups (P = 0.21). Conclusions: The incidence of delirium after the commencement of fentanyl injection was significantly lower, suggesting that fentanyl is a useful opioid injection drug from the perspective of delirium risk.

Publisher

SAGE Publications

Subject

General Medicine

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