Anesthesia and analgesia
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Anesthesia and analgesia · Jan 2010
Randomized Controlled Trial Multicenter StudyMonitored anesthesia care with dexmedetomidine: a prospective, randomized, double-blind, multicenter trial.
Dexmedetomidine (DEX) is increasingly being used as a sedative for monitored anesthesia care (MAC) because of its analgesic properties, "cooperative sedation," and lack of respiratory depression. In this randomized, multicenter, double-blind, Phase III Food and Drug Administration study, we evaluated the safety and efficacy of two doses of DEX for sedation of patients undergoing a broad range of surgical or diagnostic procedures requiring MAC. ⋯ DEX is an effective baseline sedative for patients undergoing MAC for a broad range of surgical procedures providing better patient satisfaction, less opioid requirements, and less respiratory depression than placebo rescued with midazolam and fentanyl.
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Anesthesia and analgesia · Jan 2010
Randomized Controlled TrialA randomized, double-blind, placebo-controlled trial of epidural morphine analgesia after vaginal delivery.
Pain after vaginal delivery can interfere with the activities of daily living. We hypothesized that epidural medication administered after delivery would be of benefit for acute postpartum pain management. The objective of this study was to assess whether epidural morphine after vaginal delivery would reduce the analgesic requirements for perineal pain. ⋯ There was a 78% reduction in analgesic requirements in women given epidural morphine after vaginal delivery compared with placebo for both primiparous and multiparous patients. Women who receive epidural labor analgesia for vaginal deliveries and stay in the hospital for 24 h after delivery may benefit from postpartum administration of epidural morphine.
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Anesthesia and analgesia · Jan 2010
Comparative StudyThe risk-benefit profile of aprotinin versus tranexamic acid in cardiac surgery.
Aprotinin is superior to other antifibrinolytic drugs for preventing major blood loss after cardiac surgery but may also increase perioperative mortality. It remains unclear whether its risk-benefit profile differs among low-, moderate-, and high-risk cardiac surgical patients. ⋯ Aprotinin tends to have a better risk-benefit profile than tranexamic acid in high-risk, but not low- to moderate-risk, patients. Its use in high-risk cases may therefore be warranted.
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Anesthesia and analgesia · Jan 2010
Gestation-related reduction in lumbar cerebrospinal fluid volume and dural sac surface area.
Facilitation of the spread of neuraxial anesthesia in pregnant women may be attributable in part to compression of the dural sac by the engorged epidural venous plexus. In this study, we used magnetic resonance imaging to examine pregnancy-induced changes in the lumbosacral cerebrospinal fluid (CSF) volume and dural sac surface area. ⋯ These findings indicate an association between gestational week (Weeks 31-39) and a reduction in both CSF volume and dural sac surface area. These reductions may, at least in part, explain the facilitation of the spread of intrathecal anesthesia in pregnant women.
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Anesthesia and analgesia · Jan 2010
Synthetic atrial natriuretic peptide improves systemic and splanchnic circulation and has a lung-protective effect during endotoxemia in pigs.
Pharmacological blockade of the renin-angiotensin system is thought to maintain gut perfusion during circulatory stress and thereby avoid later failure of distant organs. In this controlled experimental study, we investigated the effects of carperitide, a synthetic atrial natriuretic peptide that inhibits the renin-angiotensin system, on the systemic and splanchnic circulation during fluid-resuscitated endotoxemia in pigs. ⋯ In this porcine fluid-resuscitated endotoxemia model, a low dose of carperitide administered before endotoxemia maintained systemic and splanchnic circulation, and prevented the deterioration of oxygenation. Atrial natriuretic peptide infusion is a potentially beneficial therapy with respect to systemic and splanchnic circulation as well as the respiratory system during sepsis.