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Physician education in cancer pain management is seriously deficient. Many problems occur with opioids simply because of therapeutic ignorance. Opioid side effects are best prevented by using morphine as the drug of first choice for severe pain. Anticipation and prevention of opioid side effects avoids most problems. Physicians need to be aware of how to transfer patients from one opioid to another or from one route of administration to another. Side effects common in clinical practice are constipation, nausea/vomiting, dry mouth, and sedation. The importance of the issues of tolerance, dependence, and respiratory depression have been exaggerated.
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PMID:Prevention of opioid side effects. 198 Jan 27

Systematic treatment in children suffering from cancer pain is a field of pediatric oncology that was neglected for a long time. Investigations have shown that pain therapy oriented to the special situation of the child's body is urgently necessary. In Germany, an unpublished study by Fengler (Berlin), who reviewed all pediatric cancer centers, revealed serious deficiencies in the therapy of pain in children. In our study, we attempted to develop a new concept of cancer pain management, with the emphasis on cooperation between pediatric oncologist and anesthesiological pain therapists. PATIENTS AND METHODS. A total of 36 children and adolescents suffering from malignant tumors and in whom pain therapy according to WHO stage III was necessary were treated. After being seen by a pediatric oncologist and an anesthetist (pain therapist) each patient received either slow release oral morphine (MST, 0.5-1 mg/kg per dose) two to three times a day or a continuous infusion of morphine (0.05 mg/kg per h). The amount of morphine administered was quickly raised until the young patients were free of pain. Drug actions (pain score) and side effects were registered continuously with a documentation form. The morphine was combined with dipyrone 5-15 mg/kg per dose five times a day. The intravenous dosage of oral dipyrone was 2-5 mg/kg per h. RESULTS. The average age of the patients treated was 12 years (1.5-19 years); 10 were inpatients, and 26 were outpatients. All patients were treated successfully. The doses of morphine required for pain relief varied substantially (1-25 mg/kg per day p.o. and 0.05 mg-1 mg/kg per h i.v.). We did not observe extreme sedation or respiratory depression. In our patients we did not observe opioid-induced nausea such as is frequently seen in adults. All children needed laxatives. In 2 children, intolerable itching was experienced after oral administration of slow-release morphine. In 20 patients cortisone was given as adjuvant therapy, in 5 patients with neuropathic pain, anticonvulsants e.g., carbamazepine. In 6 patients we administered benzodiazepines successfully for sedation and anxiolysis. CONCLUSIONS. Therapy of pain in children with advanced cancer requires interdisciplinary cooperation. In most children therapy of pain can be successfully administered with slow-release morphine in combination with dipyrone, so that the children can remain in their usual social environment.
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PMID:[Cancer pain therapy in children and adolescents using morphine]. 204 10

Although nurses are in a strategic position to use hypnosis to manage a child's cancer pain, many lack the knowledge, the skill, or the exposure to the clinical effectiveness of hypnosis. Hypnosis has been a potent analgesic and anesthetic agent for more than 100 years; it reduces a child's cancer pain and the pain associated with painful procedures. Nurses can use hypnosis to help children diminish pain and cope with lumbar punctures (LPs), bone marrow aspirations (BMAs), and nausea or vomiting from chemotherapy. This article's purpose is to discuss myths, contraindications, research, processes, and effectiveness of hypnosis as a strategy for managing the cancer pain of school-age children. Vignettes from the author's clinical practice illustrate concepts and procedures.
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PMID:Using hypnosis with children for pain management. 206 59

In a double-blind crossover study, morphine and oxycodone hydrochloride were administered to 20 patients who were experiencing severe cancer pain. The peroral doses were determined on the basis of patient-controlled intravenous titration. The assumed oral bioavailability ratios were 44% (group 1, first 10 patients) and 33% (group 2, last 10 patients) for morphine and 66% (group 1) and 50% (group 2) for oxycodone hydrochloride, respectively. However, the patients were able to readjust their oral dosings. Equal analgesia was achieved with both drugs, but the intravenous dose of oxycodone hydrochloride needed was 30% higher than that of morphine. The median calculated oral/intravenous ratios giving comparable analgesia were 0.31 for morphine and 0.70 for oxycodone hydrochloride. Morphine caused more nausea than oxycodone hydrochloride and hallucinations occurred only during morphine treatment. Otherwise, there were no major differences in the side effects between these two opioids.
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PMID:Morphine and oxycodone hydrochloride in the management of cancer pain. 218 74

The purpose of this study was to assess the efficacy and side effects of morphine sulfate controlled-release (MSCR) in patients with cancer pain who had previously required narcotic analgesia. The study design included an attempt at conversion of 30 patients from the previously required narcotic analgesic to around the clock (ATC) 4-h dosing of morphine sulfate immediate-release (MSIR) that would provide satisfactory analgesia. All patients controlled on MSIR at 4-h ATC were then successfully converted to MSCR and had an appropriate dosage regimen established. The patients were subsequently maintained for 4 weeks on MSCR, with the majority of patients adhering to a 12-h schedule at two-thirds the total daily morphine dose of the q 4 h regimen. Twenty-four patients completed this dosage range study. Five dropouts were not related to use of MSCR, while one patient was discontinued because of nausea following administration of both MSIR and MSCR. Patients preferred the analgesic relief of MSCR over their previous narcotic regimen. Half the patients manifested fewer side-effects compared with their prestudy narcotics. No patients had greater side-effects with MSCR. These findings support the efficacy and safety of MSCR at appropriate dosage for the prolonged relief of cancer pain.
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PMID:Dosage range study of morphine sulfate controlled-release. 243 Apr 48

In a prospective and intraindividually controlled trial, we have compared the efficacy and safety of a continuous subcutaneous morphine infusion with conventional intermittent oral or subcutaneous morphine application. Twenty-eight in-patients with cancer pain received a short-term infusion lasting 2-42 days, and 8 out-patients underwent long-term infusion from 49 to 197 days during the terminal stage of their disease. Continuous subcutaneous morphine infusion significantly (P less than 0.001) improved both pain and quality of life when compared to conventional morphine application. With continuous infusion, 5-48 mg (median 19 mg) of morphine was required daily, significantly (P less than 0.001) less than the 10-90 mg (median 50 mg) necessary with conventional use. As a result of lower dosage, side effects under continuous infusion were infrequent and mild. Constipation occurred in 3 of the 36 patients and was always controlled by the addition of laxatives; no nausea, sedation or respiratory depression were observed. Signs of tolerance developed in 2 patients on long-term infusion, but the use of continuous subcutaneous methadone for 2 weeks reversed the tolerance. The study presented indicates that low-dose continuous subcutaneous morphine provides a valuable treatment modality for severe terminal cancer pain exhibiting a high degree of both efficacy and safety.
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PMID:Treatment of severe cancer pain by low-dose continuous subcutaneous morphine. 246 33

Oral morphine is increasingly recognized as the pharmacologic standard for cancer pain management. Yet for the primary care physician and oncologist alike, misconceptions of the safety and efficacy of oral morphine along with lack of recognized guidelines for use have often resulted in inadequate cancer pain therapy. Use of controlled-release oral morphine sulfate (MSC) requires additional guidelines for optimum analgesia. Proposed are ten principles of dosing oral morphine, especially MSC, which were followed in a clinical trial involving cancer patients. MSC dosed at 8-, 10-, and 12-hour intervals was compared with immediate-release morphine (IRMS) dosed every four hours, and with prestudy analgesics. Patients achieved satisfactory analgesia at daily doses (mean +/- SE) of 118.0 +/- 8.6 mg and 111.4 +/- 12.6 mg (P greater than .05) for IRMS and MSC, respectively. Dosing endpoints were determined by titration with IRMS and MSC to a minimal and equivalent amount of supplemental short-acting analgesic. Side effects were typical for opioids and tolerated except for one dropout on IRMS (nausea and constipation). The ten principles have been incorporated into a dosing scheme as a practical guide for MSC therapy.
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PMID:Principles of cancer pain management. Use of long-acting oral morphine. 264 96

Twenty-eight cancer patients were treated with intramuscular butorphanol tartrate, a new non-narcotic analgesic, for investigating its clinical benefits in controlling cancer pain. Remarkable analgesic effects were observed approximately 30 minutes after administration by the single dose of either 1 or 2 mg of butorphanol. The effects lasted actively for 3 to 4 hours. Tolerance or drug dependency was rarely recognized even in the cases receiving repeated injections of the drug. Adverse effects, such as dizziness, nausea, thirst, numbness of the hands etc, observed in 5 patients were transient and required no medication. The above results may warrant a long-term administration of the drug for controlling varieties of pain in the cancer patients.
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PMID:[Clinical trial of butorphanol tartrate in cancer patients: evaluation for analgesic effects and safety on the basis of long term administration]. 634 86

Fourteen patients with chronic pain of malignant origin were treated with escalating doses of THIP intramuscularly 5-30 mg in an open phase 1 study. Analgesic activity was demonstrated in 60% of the patients at the level of 20 mg THIP and a dose response relation was present. Side effects, sedation, dizziness, euphoria, nausea, and blurred vision were present in up to 80% of the patients and were dose limiting. The maximum serum concentration was reached within 1 h after dosing in 87% of all administrations. Mean t1/2 was 1.52 +/- 0.63 h and the clearance was 0.49 +/- 0.181 min. Significant correlations were demonstrated between serum concentration, dose of THIP, analgesic effect and side effects. It is concluded that THIP cannot be used for the treatment of chronic cancer pain, not because of insufficient analgesic effect but because of unacceptable side effects.
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PMID:The analgesic effect of the GABA-agonist THIP in patients with chronic pain of malignant origin. A phase-1-2 study. 663 33

The therapeutic value of buprenorphine was investigated in 31 patients suffering from moderate to severe cancer pain by intramuscular administration at the single doses of 0.2 mg and 0.3 mg in comparison with pentazocine 30 mg. Analgesic effect of buprenorphine 0.3 mg was significantly superior to buprenorphine 0.2 mg and pentazocine 30 mg. The duration of analgesia with buprenorphine was 9 hours at 0.2 mg and 11 hours at 0.3 mg, which were markedly longer than pentazocine's 6 hours. Side effects most commonly observed in the three groups were nausea, vertigo, oral dryness, urinary retention, vomiting, sweating, and headache. The frequency of side effects was 54.8% for buprenorphine 0.2 mg, 50.0% for buprenorphine 0.3 mg and 58.3% for pentazocine 30 mg respectively, indicating no significant difference between the three groups. Blood pressure, heart rate and respiratory rate did not change appreciably, thereby suggesting a little effect of buprenorphine on the respiratory and cardiovascular systems. Buprenorphine was found a useful or extremely useful in 58% at 0.2 mg and 87.5% at 0.3 mg. As the result it was concluded that buprenorphine could be valuable as an analgesic for cancer pain.
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PMID:[Effect of a long-acting analgesic, buprenorphine on cancer pain--a single-blind crossover comparison with pentazocine]. 718 1


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