Abstract
ContextMorphine is recommended as the first-line pharmacological therapy for cancer dyspnea. However, the detailed practice of morphine has not been evaluated and consensus about other opioids for cancer dyspnea has not been established. ObjectivesTo explore the physician-reported practice of opioid for cancer dyspnea. MethodsA nationwide mail-questionnaire survey was conducted among 536 Japanese certified palliative care physicians. We randomly selected 268 and asked the following: 1) how the physicians themselves initiate and use morphine for cancer dyspnea, 2) opioid choice for dyspnea in patients who have already used opioid other than morphine regularly, and 3) opioid choice for dyspnea in patients with various degrees of renal impairment in their daily practice. ResultsOverall, 192 physicians responded (response rate, 71.6%). The major (58.3%) practice of initiating morphine was “immediate-release morphine as needed” in opioid-naïve patients, and the mean % increase when they titrate morphine for cancer dyspnea was 29.4 ± 11.3% of the baseline dose. Although “titrate baseline oxycodone” was the most frequent (42.3%) for low-to-moderate–dose regular oxycodone cases, “stepwise switch to morphine” (30.0%) and “add morphine on baseline oxycodone” (27.1%) were the more frequent practices for high-dose regular oxycodone. Regardless of the baseline dose, “add morphine on baseline fentanyl” was the most frequent practice for regular transdermal fentanyl cases. Oxycodone was the most frequent choice in renal insufficiency cases, regardless of its degree. ConclusionsAmong Japanese palliative care physicians, using oxycodone for cancer dyspnea was relatively popular practice, whereas fentanyl was not. Oxycodone was the most preferred opioid for cancer dyspnea in the setting of renal insufficiency among Japanese palliative care physicians. We should conduct studies to confirm the safety and effectiveness of these opioid practices for cancer dyspnea.
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