RESEARCH FINDINGS USING GUIDED IMAGERY FOR
Definition and Scope of the Problem of Cancer Pain
Pain is among the most common and most feared symptoms of cancer. According to the Cancer Information Network, between 30%-50% of cancer patients experience pain, and approximately 70% experience severe pain at some point during the course of their disease (2006).
National costs of cancer pain management are difficult to estimate. However, in 1990, a single hospital, City of Hope, estimated their costs for hospitalizations for uncontrolled cancer pain at over $5 million. This cost would have risen to $9 million if their patients receiving home parenteral infusions of morphine had been in-patients (Ferrell & Griffith, 1994).
Medical Treatment of Cancer Pain
Various types of drugs are used to control cancer pain: non-steroidal anti-inflammatories (NSAIDS), COX-2 inhibitors, and opioids (such as morphine or Demerol). Non-pain medications can also help: drugs to relieve cramps, stabilize the heart rhythm, seizure medications, sleep aids, and drugs to relieve depression and anxiety. Used correctly, these medications can completely control pain in over 50% of cases, according to cancer specialist Daniel Brookoff, MD (2001a).
For pain that doesn’t respond to oral medications, opiates can be given intravenously (I.V.s) or directly into the spinal canal. In even more severe cases, surgery and radiation are sometimes used effectively. Use of a TENS (Transcutaneous Electrical Nerve Stimulation) device sometimes helps.
Pain specialists estimate that pain could be effectively controlled in nearly all cancers (Brookoff, 2001a). Failure to adequately treat cancer pain can lower quality of life and lead to unnecessary hospital stays. The indirect costs in lost productivity and missed work for patients and caregivers are unknown but must be substantial, as is the burden of unrelieved suffering.
Problems in Cancer Pain Treatment
Some physicians are not adequately informed about the value of non-narcotic medications, particularly anti-depressants (Brookoff, 2001a). Likewise, many patients do not request or use available medications. They may avoid anti-depressants and take less of their narcotics because they are afraid of addiction (Brookoff, 2001b). Depression, insomnia and stress can greatly increase the perception of pain and suffering (Cicala, 2001).
Non-medical Treatments Including Guided Imagery
Various complementary therapies have been found successful to varying degrees in cancer pain. These include acupuncture (Johnstone, Polston et al, 2002), hypnosis (Levitan, 1992; Vickers & Vassileth, 2001), and guided imagery (Syrjala, Cummings & Donaldson, 1992; Syrjala, Donaldson et al, 1995).
Two studies at the Fred Hutchinson Cancer Center demonstrated significant relief of cancer pain with relaxation and self-hypnosis consisting of relaxation and guided imagery (Syrjala, Cummings & Donaldson, 1992; Syrjala, Donaldson et al, 1995).
Researchers at Sloan-Kettering Memorial Cancer Center reported that “randomized trials support the value of hypnosis for cancer pain and nausea; relaxation therapy, music therapy, and massage for anxiety. Such complementary therapies are increasingly provided at mainstream cancer centres” (Vickers & Cassileth, 2001). A University of Minnesota researcher reported significant pain relief from a hypnosis technique called glove anesthesia (Levitan, 1992).
Self-hypnosis, relaxation, and meditation have been significantly effective in many types of pain, including cancer (Sloman, Brown et al, 1994; Sellick & Zaza, 1998). Kabat-Zinn and others reported dramatic improvement in the chronic pain in a group of 90 patients who participated in a 10-week meditation program (Kabat-Zinn, Lipworth & Burney, 1985). These patients had increased comfort and less psychological distress. In some cases, they were able to use less medication. Other researchers’ patients achieved profound relief of arthritis pain with self-hypnosis (guided imagery) (Carni & Gilbert, 1982).
Despite studies that confirm that mind-body approaches such as guided imagery, hypnosis, and relaxation have direct physiological effects in stress levels, the immune system, and pain management (Bakke, Purtzer & Newton, 2002; Gruzelier, 2002), many times, doctors aren’t the first ones to suggest alternative pain approaches. One doctor at the Eastern Virginia School of Medicine found that many cancer patients come to that clinic familiar with hypnosis and request it for their pain (Lynch, 1999).
In a 2003 review of the literature, the authors reviewed complementary and alternative medicine (CAM) use in end-of-life issues such as pain. They found that self-hypnosis was one of the techniques that may provide relief in cancer pain, and that relaxation and imagery specifically could help with the pain of mouth sores (oral musositis) (Pan, Morrison et al, 2000).
Authors of a 2004 review reported evidence of efficacy for hypnosis in cancer pain (Shukla & Pal, 2004). The authors of two dissertations on the effects of guided imagery reported that patients had less anxiety and depression (Caruso, 1999; Henge, 1999). A 2005 review confirmed the efficacy of mind-body techniques for in treating cancer pain, as well as for other anxiety and mood disturbances that are common in oncology patients (Deng & Cassileth, 2005).
When used along with prescribed medications, guided imagery can contribute to controlling pain and anxiety in cancer patients. In some cases, guided imagery can allow reduction of medication usage.
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