Introduction: Patients of end-stage heart failure often develop dyspnea. Although morphine is used for dyspnea, these patients are often inappropriate group for using morphine due to renal failure. Case: A seventy-year-old male with end-stage heart failure due to dilated cardiomyopathy developed dyspnea. We used continuous oxycodone infusion for dyspnea with small dose as an alternative to morphine due to renal failure. His dyspnea was relieved in dose-dependent without heart failure recovery. Conclusion: Oxycodone may be an alternative therapy for dyspnea with end-stage heart failure with renal failure.

Purpose: Naldemedine is a peripheral µ-opioid receptor antagonist, including the treatment of opioid-induced constipation (OIC) . However, diarrhea is known as its side effect. We conducted a study focusing on the administration period of opioid analgesics before the start of naldemedine to clear predictors of diarrhea due to Naldemedine. Method: All data were retrospectively collected from the electronic medical record system. We investigated patients who initially administrated naldemedine at Nagasaki University Hospital from June 1 2017 to March 31 2019. Result: One hundred thirty-two patients were subject of investigation. The incidence of diarrhea was 25.0%. The result of the multivariate analysis showed that significant predictors of diarrhea were associated with the opioid analgesics usage period longer than 7 days before naldemedine initiation (odds ratio: 3.76, 95% confidence interval: 1.53-9.20, p=0.004). Discussion: When naldemedine was used for OIC, diarrhea may be avoided by using within 7 days after opioid analgesics.