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- W4236199105 abstract "Ten patients with intractable pain (five cancer and five nonmalignant) were treated with continuous intraspinal morphine delivered by an implanted continuous infusion system. Both patient groups were evaluated and compared using an identical battery of psychometric examinations administered before and 12 weeks after therapy. The cancer-pain group reported significant reduction in pain on serial visual pain analogue scales at 12 weeks compared with no change in the nonmalignant-pain group reports despite a much lower baseline report in the cancer group. Both groups of patients reduced their oral narcotic requirement significantly during continuous intraspinal morphine infusion. While the cancer patients took more oral narcotic at baseline, at 12 weeks no difference existed in oral intake between the two groups. Both groups required significant serial increases in infused morphine, indicating that spinal opiate receptor tolerance occurs. The results of this study confirm the sustained analgesic efficacy reported earlier in cancer-related pain syndromes, thus supporting further cautious expansion of this therapy within the cancer-related pain population. In contrast, a poor response was seen in the nonmalignant-pain group, consistent with the unsatisfactory responses to many potentially analgetic approaches to chronic nonmalignant pain. We are thus discouraged from further use of this therapy in the patient with chronic nonmalignant pain. (<i>JAMA</i>1983;250:2336-2339)" @default.
- W4236199105 created "2022-05-12" @default.
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- W4236199105 date "1983-11-04" @default.
- W4236199105 modified "2023-09-28" @default.
- W4236199105 title "Relief of continuous chronic pain by intraspinal narcotics infusion via an implanted reservoir" @default.
- W4236199105 doi "https://doi.org/10.1001/jama.250.17.2336" @default.
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