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Query: UMLS:C0030193 (pain)
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The effectiveness of a brief clinical and basic science seminar on pain for 1st year medical students was examined by comparing attitudes about pain prior to the seminar to attitudes 5 months after the seminar. The 6-h course combined written materials conveying facts about behavioral, social and biological aspects of pain with clinical observations of an acute and a chronic pain treatment team. Examination of responses to a questionnaire assessing attitudes toward pain patients revealed that medical students have limited personal experience with pain and medications for pain, and limited knowledge about pain. Pre-course attitudes toward pain patients were dominated by perceived negative characteristics of pain patients and the belief that working with such patients is difficult. Attitudes measured 5 months after the course reflected increased complexity, greater emphasis that pain is real and not imaginary, and stronger belief that working with pain patients is rewarding. Five months after the seminar, students reported more accurate estimates of the frequency of problems with addiction stemming from acute pain treatment and exaggerated the prevalence of pain problems in the society. The importance of integrating clinical and basic science experiences in order to influence long-term clinical attitudes and produce lasting changes in clinically relevant knowledge is discussed.
Pain 1992 Sep
PMID:Medical students' attitudes toward pain before and after a brief course on pain. 145 81

Pain management, nutritional support, and psychosocial support are fundamental services that enhance patients' ability to cope with their cancer and its therapy. The common goal of symptom prevention mandates that each of these supportive services be provided to all patients throughout their cancer experience. Comprehensive cancer pain management begins with identifying the origin of all of the patient's pains and treating each one specifically. Pain prevention can be achieved through around-the-clock opioid administration with as-needed supplements for breakthrough pain and dose titration. Common narcotic side effects such as constipation and nausea also must be prevented. Successful opioid analgesia requires that patient and family concerns regarding addiction and tolerance be dispelled at the outset. Cancer pain prevention can be further optimized with the use of appropriate coanalgesics in response to the pathophysiology of the patient's pains. Cognitive and behavioral therapies may also be useful adjuncts to reduce both pain and suffering. Procedure-oriented pain control should be considered when systemic pharmacologic therapy does not provide adequate pain relief or is associated with intolerable side effects. The only absolute contraindications for pain-relieving procedures are untreatable coagulopathy and a decrease in mental status not related to medical pain management. Useful neurodestructive techniques include radiofrequency lesioning, cryoanalgesia, and chemical neurolysis with agents such as phenol, alcohol, and hypertonic saline. The most beneficial pain-relieving procedures and percutaneous cordotomy, spinal narcotics, celiac and hypogastric plexus ablation, spinal neurolysis, and epidural injection of steroids and hypertonic saline. Procedure selection depends on the cause of the pain and the patient's prognosis. Common indications for pain-relieving procedures include unilateral pain below the shoulder, upper abdominal visceral pains, pelvic visceral pain, perineal pain, vertebral body metastasis, discogenic pain, and spinal stenosis. As results of well-conducted scientific trials begin to appear in the literature, the indications for these procedures will be better understood, resulting in their more appropriate use. Principles of nutritional support in patients with cancer include an awareness of the problem of malnutrition and its impact on performance status, quality of life, prognosis, and treatment; identification of those patients at risk; prophylactic versus therapeutic intervention; and analysis and management of the specific impediment(s) to adequate nutrient intake and absorption. The primary goals for nutritional support in cancer patients are prevention of weight loss and maintenance of adequate protein status. Appreciation of practical issues of nutritional support will enable the practicing physician to achieve these goals using primarily oral nutrition options.(ABSTRACT TRUNCATED AT 400 WORDS)
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PMID:Supportive care in oncology. 128 50

This analysis indicated that patients with cancer-related pain account for 71.0% in author's material. After the TCM treatment, the effective rate were 91.6% in hepatocarcinoma-related pain; 86.1% in colon-rectal cancer-related pain; 68.2% in malignant lymphoma-related pain; 100% in irradiation-related pain of esophageal cancer, lung cancer, post-operative breast cancer. Results of "four-step analgesic ladder" showed that 52.1% of pain could be relieved by Step I (TCM therapy); if Step II (indomethacin) or III (phenylbutazone) was added, the rate of pain relief reached as high as 96.5%; and only 3.5% need to be treated by Step IV (Opioids). With less side-effects and addiction of opioids and other narcotics, the "four-step analgesic ladder" therapy seems to be more suitable for cancer pain relief in China.
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PMID:[Comprehensive "4-step analgesic ladder" therapy in treating cancer-related pain-analysis of 486 cases]. 130 38

Dezocine is an agonist-antagonist opiate that acts at the mu receptor, and is used for management of pain. Monkeys will readily press a lever to receive an injection of dezocine, and in former opiate addicts dezocine produces positive subjective effects similar to those of morphine. It is not clear, however, what its subjective effects are in people who do not have a history of opiate abuse. To answer this question, a within-subjects design was used in which 10 normal healthy volunteers (six men, four women) were injected with 0, 2.5, 5.0, and 10 mg/70 kg of dezocine in a double-blind fashion. Subjects completed several questionnaires (e.g., Addiction Research Center Inventory) commonly used in abuse liability testing before and at periodic intervals for up to 5 h after drug injection. We also assessed psychomotor performance (e.g., eye-hand coordination) and several physiologic measures (e.g., pupil size, respiration rate) at these times. Dezocine produced increases in ratings of drug liking (P less than 0.001), as well as other subjective effects that might be considered as pleasant ("good mood," "drunken," "coasting," "happy" ratings) (all P less than 0.05). At the same time, the drug had effects (increased dysphoria and sedation) that typically are not reported by addicts. Dezocine produced psychomotor impairment and miosis (constriction of the pupils) in a dose-dependent fashion. The observation that dezocine produces euphoria and increased drug-liking ratings in individuals without histories of drug abuse suggests that hospitals and surgicenters should have strict accountability procedures with this drug.
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PMID:Subjective, behavioral, and physiologic responses to intravenous dezocine in healthy volunteers. 134 68

The use of drugs in pain therapy is characterized by the fear of addiction. As a result strong analgesics are underused. To compensate the missing analgesic effect the additional use of psychotropic drugs is common. There is still little knowledge that just this therapeutic strategy of underuse leads to iatrogenic addiction. To avoid misunderstandings and irritations in the discussion around addiction, there must be clearly distinguished between physical and psychological dependence. There is sufficient evidence that especially tranquilizers and mixed analgesics induce the development of psychological dependence. In pain therapy there is no indication for these substances. In contrast opioids can be used without causing psychological dependence, presuming the guidelines of drug therapy in chronic pain (e.g. WHO guidelines) are attended.
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PMID:[Drug dependence in therapy of chronic pain]. 135 31

Adverse effects of opioids are multiple. They are most often receptor-mediated and inseparable from their desired effects. The most severe mishaps with opioids are related to their respiratory depressant effect, which is widely influenced by factors such as pain, previous opioid experience and awareness. Other relevant central nervous system effects of opioids include cough suppression, nausea and vomiting, rigidity, pruritus and miosis. The cardiovascular adverse effects of opioids are mainly related to histamine release and differ widely between agonists and agonist-antagonists. Gastrointestinal effects such as constipation, reflux and spasms of the bile duct are well described. Adverse effects on endocrine, immunological and haematological functions are possible, while allergic reactions are extremely rare. The adverse effects of long term use are overestimated. Systemic toxicity is negligible and development of tolerance is minimal while treating pain. In the clinical setting of pain control, addiction and withdrawal do not pose significant problems. Nevertheless, the possible effects of opioids on the unborn child should always be considered. Overall, opioids show a good record of safety. Their use should not be unduly limited by unfounded fears of adverse effects, but these effects should be avoided by anticipation and prevention.
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PMID:Adverse effects of systemic opioid analgesics. 135 45

This prospective and comparative study was designed to determine the role of cancer pain and attitudes towards morphine in attenuating the intensity and duration of physical dependence following chronic morphine treatment. Morphine was administered via a stepwise ladder approach in order of oral, spinal and intravenous routes depending on the adequacy of analgesia. On-demand titration of a dose, either upward or downward, was liberal and unlimited. Withdrawal strategy was evaluated and initiated either by patients (PI group) or their families (FI group). The manifestation of physical dependence on morphine was compared between patients who successfully withdrew (total withdrawal), and patients who failed to withdraw (episodic withdrawal), from morphine for a period of more than two weeks. Eighty-eight out of 627 patients (14.1%) were excluded from our protocol; 75% of these exclusions were due to objections toward morphine as the major form of analgesic. Drop-out due to poorly tolerated side effects was relatively rare (18.2%). Fifty-four (10.0%) achieved total withdrawal and 212 (39.3%) experienced episodic withdrawal. Non-pain-related abstinence symptoms were highly prevalent but were tolerable for both groups. Pain-related symptoms were more exaggerated during episodic withdrawal. Intolerable pain, rather than physical dependence, contributed to the failure to withdraw from morphine. Among a total of 539, addiction was found in only one patient (0.18%) who began drug use long before entering our protocol. Attitudes towards morphine affect the acceptance of treatment and hasten the withdrawal strategy. Families were more anxious about morphine than the patients themselves which led to more aggressive, but less tolerable, withdrawal.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:Can cancer pain attenuate the physical dependence on chronic long-term morphine treatment? 135 30

It is commonly recognized than opioids analgesics have an major place in the treatment of pain. In spite of guidelines, opioids drugs remain underutilized in chronic cancer pain and acute severe pain. Among the possible factors, involved in the insufficient use of opioids drugs, is the fear (opiophoby) of physicians, nurses, patients and family to induce or to maintain an addiction. This review examines the potential of iatrogenic addiction. We will examined the place of morphine-like drugs in the treatment of severe acute pain and chronic cancer pain, the definition of dependency in pain patients, the assessment of the dependency potential in patients treated for pain. Available studies indicate that iatrogenic addiction is quite scarce and that the risk for a major tolerance is very small. Further studies will be necessary, since opioids analgesics may also be useful in some non-cancer chronic pain.
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PMID:[Need of risk reevaluation in morphine dependence in pain patients]. 136 96

A questionnaire was sent to principal investigators of NIH-sponsored clinical research in sickle cell disease. Twenty of 21 respondents indicated they used parenteral narcotic analgesics for pain episodes sufficiently severe to warrant hospitalization. Eleven used meperidine; seven, morphine; and one each, nalbuphine, hydromorphone, and acetaminophen with codeine. They gave the agents at frequent, regular intervals or by continuous infusion. A total of 41 of more than 3,500 patients required chronic transfusion for pain control. Complications included meperidine-associated convulsions reported by nine respondents and addiction by six. This information indicates that vigorous pain-control methods are used at institutions having a special interest in providing medical care for children with sickle cell disease.
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PMID:Survey of pain management therapy provided for children with sickle cell disease. 137 56

One of the World Health Organization's (WHO) top priorities is cancer pain relief. Simple guidelines for assessing and relieving pain have been developed, published, and field tested. WHO has concluded that there is enough knowledge currently to permit an approach to cancer pain relief that can be implemented on a worldwide basis. This information, when used correctly, allows pain control in 75% or more of patients with cancer pain. However, numerous barriers prevent the application of this knowledge and the achievement of cancer pain relief. Assessing the patient's cancer pain and effective use of analgesic drugs, especially opioid agents, are hampered by a lack of education of health-care professionals and the fact that the pain sensation is entirely subjective. Unfortunately, these factors often result in pain management being determined on the basis of personal opinion rather than scientific knowledge. This leads to inconsistent and often inadequate care of patients with cancer pain. The extent of the cancer pain problem and the WHO analgesic-ladder approach to cancer pain relief are reviewed along with recommendations from the American Pain Society. Lack of education of health-care professionals is discussed, focusing on pain assessment, underuse of oral and rectal routes of administration, fears of addiction, and titration of doses of opioid drugs. Simple strategies for beginning to correct these problems are presented.
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PMID:Pain control. Barriers to the use of available information. World Health Organization Expert Committee on Cancer Pain Relief and Active Supportive Care. 138 Aug 84


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