What to discuss with patients who are starting strong opioidsAddress concerns about addiction, tolerance, and side effects, being clear that prescription of strong opioids does not mean patients are in the last stage of life Give verbal and written advice on when and how to take opioids for both background and breakthrough pain Explain how long the pain relief should last and that patients ability to drive may be impaired during initiation of treatment or when doses are increasedGive advice on signs of toxicity, such as drowsiness, twitching, and hallucinations, and who to contact if any occur out of hours Provide drugs at the start of treatment, to deal with side effects such as constipation Offer regular review Adapted from NICE clinical guideline 140 (http://guidance.nice.org.uk/CG140) bisphosphonates are equally appropriate and effective interventions.A Cochrane review from 2002 examined the effects of bisphosphonates on cancer induced bone pain and calculated numbers needed to treat of 11 at four weeks after infusion and 7 at 12 weeks after infusion. 31 This review concluded that although evidence supports the use of bisphosphonates they should not be considered as first line management, which is in keeping with the advice from NICE.
31In patients with cancer induced bone pain from myeloma, a Cochrane review showed benefit from bisphosphonates in pain management.
32
DenosumabDenosumab is a novel agent that specifically inhibits RANK-ligand. Clinical trials have shown important benefits in reducing skeletal related events. One randomised controlled trial recruited patients with breast cancer with mild levels of pain. The median time for moderate or severe pain to develop in those receiving denosumab was significantly delayed when compared with bisphosphonate zolendronic acid, although there was no difference in the use of strong analgesics at the end of the study.
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Interventional proceduresIf patients have ongoing complex cancer induced bone pain despite receiving opioids, radiotherapy, or bisphosphonates, referral to pain services should be considered. There is good evidence from a randomised controlled trial that implantable intrathecal devices lead to a reduction in pain and increased survival in patients taking high dose opiates for refractory pain.
SurgeryIn patients with a good performance status, prophylactic surgery may be considered for relief of cancer induced bone pain. One randomised controlled trial showed that percutaneous stabilisation in the long bones of leg can significantly reduce pain. Once a pathological fracture has occurred, however, orthopaedic intervention can stabilise the fracture.
Complementary therapiesComplementary therapies may be considered, but as yet they are supported by weak evidence. A Cochrane systematic review of acupuncture acknowledged that there were studies showing benefit in cancer pain, but that evidence was insufficient to recommend this as a treatment. Evidence was also insufficient to support TENS (transcutaneous electrical nerve stimulation), but one small ...