Articles: pain.
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Physiologic findings and clinical observations with several new implant systems are discussed. One system studied is designed with electrodes implanted over the anterior region of the spinal cord. ⋯ Also given are observation and description of cortical and cerebellar implant systems. Current-density plots of the electrode arrays are included.
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Medical instrumentation · Sep 1975
Electrical stimulation of peripheral nerves for relief of intractable chronic pain.
Electrostimulation of peripheral nerves was used in patients to relieve chronic pain due to nerve injury. After follow-up for periods of 6 to 48 months, most of the patients exhibited some degree of pain alleviation. This paper details the circumstances of some of the cases and cites precautions to be taken in the use of this therapeutic mode.
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Medical instrumentation · Sep 1975
Implanted devices for electronic augmentation of nervous system function.
Electrical stimulation of the dorsal cord is discussed as a mode of therapy for intractable pain, and placed into its proper perspective as a part of a comprehensive rehabilitation program. The author reviews his experience with electrical stimulation and emphasizes features of the patient-selection process.
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Comparative Study Clinical Trial Controlled Clinical Trial
Intravenous ketamine for postoperative analgesia.
Thirty-six consecutive patients who had undergone major surgery were carefully studied for 6 hours postoperatively in an attempt to evaluate the relative analgesic and respiratory-depressant effect of morphine, ketamine, and placebo administered by continuous intravenous infusion. Side-effects, vital signs and respiratory measurements were recorded hourly by a consultant physician. With regard to the dosage and method of administration, ketamine was shown to be less effective than morphine for the first 3 hours postoperatively, but equally effective subsequently, whereas the patients who received ketamine showed a greater progressive tendency for their respiratory parameters to improve with time. Recommendations regarding the postoperative control of pain are made, and the need for further study is noted.
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Results of a series of dorsal column stimulation implants in 76 patients are tabulated and correlated to implant location, type of electrodes used and pain causes; complications are also discussed.