Articles: analgesia.
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The results of 670 consecutive caudal blocks performed by the author for operative obstetrics over 20 years is reported. There was no morbidity attributable to the technique. ⋯ The causes of these failures are discussed. It is recommended that caudal analgesia continues to be used for operative vaginal obstetrics.
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Anesthesia and analgesia · Aug 1990
Randomized Controlled Trial Comparative Study Clinical TrialPostoperative pain control with a continuous infusion of epidural sufentanil in the intensive care unit: a comparison with epidural morphine.
A prospective, randomized, double-blind trial was conducted to compare the analgesic actions and side effects of sufentanil continuously infused (5 micrograms/h) into the lumbar epidural space (L2-3) with those of an infusion of lumbar epidural morphine (0.5 mg/h). Forty patients admitted to an intensive care unit after elective major abdominal surgery participated over a varying period of 24-40 h. Post-operative pain was treated with an epidural bolus of either sufentanil (50 micrograms) or morphine (5 mg), followed by a continuous infusion of the same opiate. ⋯ The incidence of nausea and vomiting, pruritus, and drowsiness was similar in the two groups. In spontaneously breathing patients there were no respiratory complications requiring treatment. Forced vital capacities were statistically significantly better during the first 1-4 h with sufentanil.
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Epidural opioids have been used in obstetrics since 1980. Various opioids are reviewed in relation to their pharmacology, their efficacy in labour, during caesarean section and for postoperative analgesia, their side-effects and safety. In this patient population it appears safe to administer epidural opioids on the general ward provided that strict monitoring standards are maintained. Practical considerations of nursing management are discussed.
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Anaesth Intensive Care · Aug 1990
ReviewEpidural medication after the initial dose: reflections on current methods of administration during labour.
Most women who receive epidural pain relief during labour require additional epidural analgesia following the initial dose. This review examines the relative merits associated with current methods of epidural drug delivery when further analgesia is required. Apart from considerations of patient safety and convenience the review compares the relative flexibility in pain management which can be provided by these different regimens. It is postulated that patient satisfaction is enhanced when the mother has some personal control over the density of neural blockade provided by epidural analgesia.
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Plasma concentrations of methadone were measured by gas chromatography in 16 patients receiving extradural methadone by continuous infusion for relief of postoperative pain. Venous blood samples were taken after a loading dose of extradural methadone 2 mg and during infusion of 0.46 mg h-1 plus patient-controlled increments of 0.2-1 mg. Mean (SD) plasma concentration of methadone was 9.8 (2.1) ng ml-1 at 15 min; this did not change significantly during the first 2 h, after which it increased gradually to 32.2 (4.6) ng ml-1 (P less than 0.001) at the end of 24 h. ⋯ No adverse effects were detected during the 2-3 days of methadone therapy. Plasma concentration of methadone increased significantly during patient-controlled infusion of extradural methadone in the first 24 h after operation, suggesting rapid vascular uptake. Systemic activity of the drug contributes to the analgesic effect of extradural methadone.