Articles: pain-management.
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One in five deaths in Australia is due to cancer. Pain is an important symptom in many of these patients, but it is often either unrelieved or poorly controlled. ⋯ Special attention is given to the use of regular oral doses of morphine. Many of the interacting factors affecting pain perception are considered, so that the sense of impotence in those faced with the management of a progressive incurable disease may be reduced through an understanding of the causes of pain and its correct management.
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The growing incidence of cancer pathology all over the world implies not only problems of prevention and cure, but also of pain control. Pain appears in more than 50% of cancer patients, mainly because analgesic opioids are not available or adequately administered. For this reason, the World Health Organization (WHO) has created a Collaborating Centre for Cancer Pain Relief at the Division of Pain Therapy of the National Cancer Institute, Milan. ⋯ Treatment is then either discontinued or changed to a following step because of side-effects (40%) or inefficacy (44%). The reduction in the use of non-narcotics corresponds to a successive increase in the use of opioids, particularly direct agonists. Through an adequate use of the analgesic ladder, pain can be relieved in the great majority of cancer patients.
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A patient is presented in whom 15 ml of 15% potassium chloride (30 mM) mixed with bupivacaine was injected epidurally for relief of pain resulting from widespread pelvic malignancy. Within minutes the patient complained of severe pain in both the lower limbs and rapidly became paraplegic with bladder and bowel incontinence. The paraplegia was permanent. The transient symptoms of pain may have been partly due to the irritant effects of a hyperosmolar solution of potassium chloride in the epidural space, while the permanent neurological damage might have been due to the very high extracellular concentration of potassium leading on to a depolarising phenomenon initially followed by nerve tissue necrosis.
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Development of a painful shoulder in the hemiplegic patient is a significant and serious problem, because it can limit the patient's ability to reach his or her maximum functional potential. Several etiologies of shoulder pain have been identified, such as immobilization of the upper extremity, trauma to the joint structures, including brachial plexus injuries, and subluxation of the gleno-humeral joint. ⋯ This knowledge is essential for the occupational therapist to evaluate effectively techniques used to treat the patient with hemiplegic shoulder pain. More effective management of this problem will facilitate the patient's ability to reach his or her maximum functional potential.