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Randomised, double blind, placebo controlled crossover trial of sustained release morphine for the management of refractory dyspnoea
Open accessAbstract
Objective To determine the efficacy of oral morphine in relieving the sensation of breathlessness in patients in whom the underlying aetiology is maximally treated. Design Randomised, double blind, placebo controlled crossover study. Setting Four outpatient clinics at a hospital in South Australia. Participants 48 participants who had not previously been treated with opioids (mean age 76, SD 5) with predominantly chronic obstructive pulmonary disease (42, 88%) were randomised to four days of 20 mg oral morphine with sustained release followed by four days of identically formulated placebo, or vice versa. Laxatives were provided as needed. Main outcome measures Dyspnoea in the morning and evening as shown on a 100 mm visual analogue scale, quality of sleep, wellbeing, performance on physical exertion, and side effects as measured at the end of the four day treatment period. Results 38 participants completed the study; three withdrew because of definite and two because of possible side effects of morphine (nausea, vomiting, and sedation). Participants reported significantly different dyspnoea scores when treated with morphine: an improvement of 6.6 mm (95% confidence interval 1.6 mm to 11.6 mm) in the morning and of 9.5 mm (3.0 mm to 16.1 mm) in the evening (P = 0.011 and P = 0.006, respectively). During the period in which they were taking morphine participants also reported better sleep (P = 0.039). More participants reported distressing constipation while taking morphine (9 v 1, P = 0.021) in spite of using laxatives. All other side effects were not significantly worse with morphine, although the study was not powered to address side effects. Conclusions Sustained release, oral morphine at low dosage provides significant symptomatic improvement in refractory dyspnoea in the community setting.
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“Even opioids, with most evidence to support their use, provide benefit of only borderline clinical significance.”
From The Breathing, Thinking, Functioning clinical model: a proposal to facilitate evidence-based breathlessness management in chronic respiratory disease (2017) · cites this paper as [19]
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Cites
Vestbo, J., Hurd, S. S., Agustí, A. G., Jones, P. W., Vogelmeier, C., Anzueto, A., Barnes, P. J., Fabbri, L. M., Martinez, F. J., Nishimura, M., et al. (2013) · American Journal of Respiratory and Critical Care Medicine · doi:10.1164/rccm.201204-0596pp · Cited by 15,983
Toxicity and response criteria of the Eastern Cooperative Oncology Group
Oken, M. M., Creech, R. H., Tormey, D. C., Horton, J., Davis, T. E., Mcfadden, E. T., & Carbone, P. P. (1982) · American Journal of Clinical Oncology · doi:10.1097/00000421-198212000-00014 · Cited by 11,686
PAUWELS, R. A., Buist, A. S., CALVERLEY, P. M. A., Jenkins, C. R., & Hurd, S. S. (2001) · American Journal of Respiratory and Critical Care Medicine · doi:10.1164/ajrccm.163.5.2101039 · Cited by 6,572
Bestall, J. C., Paul, E. A., Garrod, R., Garnham, R., Jones, P. W., & Wedzicha, J. A. (1999) · Thorax · doi:10.1136/thx.54.7.581 · Cited by 2,927
The two‐period cross‐over clinical trial.
Hills, M., & Armitage, P. (1979) · British Journal of Clinical Pharmacology · doi:10.1111/j.1365-2125.1979.tb05903.x · Cited by 1,399
The Two-Period Change-Over Design and Its Use in Clinical Trials
Grizzle, J. E. (1965) · Biometrics · doi:10.2307/2528104 · Cited by 784
A systematic review of the use of opioids in the management of dyspnoea
Jennings, A.-L. (2002) · Thorax · doi:10.1136/thorax.57.11.939 · Cited by 639
Cancer Patients: Their Desire for Information and Participation in Treatment Decisions
Sutherland, H. J., Llewellyn‐Thomas, H. A., Lockwood, G. A., Tritchler, D., & Till, J. E. (1989) · Journal of the Royal Society of Medicine · doi:10.1177/014107688908200506 · Cited by 435
Dyspnea in Terminally Ill Cancer Patients
Reuben, D. B., & Mor, V. (1986) · CHEST Journal · doi:10.1378/chest.89.2.234 · Cited by 362
Bredin, M., Corner, J. L., Krishnasamy, M., Plant, H., Bailey, C., & A’Hern, R. (1999) · BMJ · doi:10.1136/bmj.318.7188.901 · Cited by 322
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Modlińska, A., Buss, T., & Lichodziejewska–Niemierko, M. (2007) · Advances in respiratory medicine · doi:10.5603/arm.27965 · Cited by 3
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Machin, D., Campbell, M. J., Tan, S. B., & Tan, S. H. (2018) · Wiley eBooks · doi:10.1002/9781118874905.refs
(2011) · Current Opinion in Supportive and Palliative Care · doi:10.1097/spc.0b013e3283473351
(2022) · Elsevier eBooks · doi:10.1016/b978-3-437-23673-0.00006-9
(2015) · Elsevier eBooks · doi:10.1016/b978-3-437-23671-6.00006-7
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Turhal, N. S., & Dane, F. (2019) · Springer eBooks · doi:10.1007/978-3-030-16792-9_33
Shadd, J., & Dudgeon, D. J. (2009) · Elsevier eBooks · doi:10.1016/b978-0-323-05674-8.50163-8
Sitte, T., & Thöns, M. (2016) · Springer eBooks · doi:10.1007/978-3-662-49325-0_5
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Reddel, H. K., & Farah, C. S. (2010) · Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature · doi:10.3410/f.5882956.5871054
Peel, T., & Burns, G. (2019) · Springer eBooks · doi:10.1007/978-3-030-18944-0_2
(2018) · Elsevier eBooks · doi:10.1016/b978-3-437-23672-3.00006-8
Klug entscheiden am Lebensende
Alt‐Epping, B. (2018) · Uro-News · doi:10.1007/s00092-018-1958-3
Verdú-Masiá, R., Aliques, B. D. D., Jiménez, A. J. M., Sanz-Yagüe, A., & López, B. S. (2017) · Revista de la Sociedad Española del Dolor · doi:10.20986/resed.2018.3582/2017
Sitte, T., & Thöns, M. (2019) · Springer eBooks · doi:10.1007/978-3-662-59090-4_5
Sitte, T., & Thöns, M. (2013) · Springer eBooks · doi:10.1007/978-3-642-36997-1_5
Albert, Y., Bien, J., Blum, D., van Caster, P., Coym, A., Doll, A., Eisenmann, Y., Glahn, S., Goldbach, S., Hlawatsch, C., et al. (2019) · Elsevier eBooks · doi:10.1016/b978-3-437-15315-0.00002-4
Peel, E. T., & Burns, G. (2012) · Springer eBooks · doi:10.1007/978-1-4471-2230-2_2
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Tarsia, P. (2016) · doi:10.1093/med/9780199600830.003.0083
Johnson, M. J. (2022) · doi:10.1093/med/9780198766223.003.0065
Trainor, A., Richards, J. B., Banzett, R. B., & Schwartzstein, R. M. (2022) · SSRN Electronic Journal · doi:10.2139/ssrn.4107162
Ferreira, D. H., Ekström, M. P., & Currow, D. C. (2022) · Internal Medicine Journal · doi:10.1111/imj.15902
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刘, 青. (2022) · Advances in Clinical Medicine · doi:10.12677/acm.2022.12121741
Metadata
- Authors
- Abernethy, A. P., Currow, D. C., Frith, P., Fazekas, B. S., McHugh, A., & Bui, C.
- Affiliations
- Flinders University (AU)
- Repatriation General Hospital (AU)
- Nepean Hospital (AU)
- Corresponding author
- Currow, David C
- Venue
- BMJ
- Publisher
- BMJ
- Published
- 2003-09-04
- Volume
- 327
- Issue
- 7414
- Pages
- 523-528
- ISSN
- 0007-1447 (ISSN-L)
- 0959-8138
- 1468-5833
- PMC
- PMC192892
- OpenAlex
- W2157851934
- Cited by
- 521
- References
- 26
- Citations by year
- 2026: 7 · 2025: 10 · 2024: 10 · 2023: 11 · 2022: 17 · 2021: 20 · 2020: 22 · 2019: 19 · 2018: 38 · 2017: 34 · 2016: 38 · 2015: 44 · 2014: 26 · 2013: 25 · 2012: 40
- FWCI
- 11.12
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Licence
- www.bmj.com/company/legal-information/terms-conditions/legal-information/tdm-licencepolicy (tdm)
- Locations
- BMJ (publishedVersion)
- Europe PMC (PubMed Central) (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Flinders Academic Commons (Flinders University) (submittedVersion)
- Topics
- Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Chronic Obstructive Pulmonary Disease (COPD) Research
- Health Sciences › Medicine › Anesthesiology and Pain Medicine › Pain Management and Opioid Use
- Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Palliative Care and End-of-Life Issues
- Keywords
- sustained-release morphine, oral morphine, chronic obstructive pulmonary disease, opioid therapy, dyspnea, sleep quality, constipation, opioid side effects, palliative care, community-based treatment
- MeSH terms
- Administration, Oral, Aged, Chronic Disease, Delayed-Action Preparations, Double-Blind Method, Dyspnea, Female, Humans, Male, Morphine, Narcotics, Cross-Over Studies, Pulmonary Disease, Chronic Obstructive
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