Acta anaesthesiologica Scandinavica
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Acta Anaesthesiol Scand · Sep 1997
Randomized Controlled Trial Comparative Study Clinical TrialAnalgesia after upper abdominal surgery using extradural administration of a fixed dose of buprenorphine in combination with lignocaine given at two infusion rates: a comparative study.
Extradural administration of combinations of local anaesthetics and opioids are frequently employed for postoperative pain relief. There is a scarcity of data on the analgesic effects of variations of the dose of local anaesthetic drug admixed to a fixed dose of opioid. ⋯ When added to a fixed dose of buprenorphine, continuous extradural infusion of 2% lignocaine at high rate provides better postoperative analgesia than when given at low rate without producing significant side effects.
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Acta Anaesthesiol Scand · Sep 1997
Randomized Controlled Trial Clinical TrialImpact of autotransfusion after coronary artery bypass grafting on oxygen transport.
Autotransfusion of shed mediastinal blood after coronary artery bypass grafting (CABG) has been shown to reduce the requirement for allogeneic blood. We have previously demonstrated in non-randomized studies that the oxygen capacity of shed mediastinal blood is similar to the patient's circulating blood and better than stored allogeneic blood. Therefore, we wanted to examine the influence of autotransfusion of shed mediastinal blood on oxygen transport capacity in patients undergoing CABG. ⋯ Autotransfusion of shed mediastinal blood conserves the 2,3-DPG level of the red blood cells, while transfusion of stored blood leads to a decrease in 2,3-DPG levels. Autotransfusion had no effect on hemodynamic parameters, oxygen delivery or oxygen extraction.
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Acta Anaesthesiol Scand · Sep 1997
Randomized Controlled Trial Clinical TrialPerioperative magnesium infusion and postoperative pain.
NMDA receptor activation is considered one of the mechanisms involved in postoperative pain and hypersensitivity. Magnesium is the physiological blocker of the NMDA-receptor-complex-associated calcium ionophore. The aim of this study was to determine if a pre-, intra- and postoperative infusion of magnesium would reduce postoperative pain. ⋯ Perioperative magnesium infusion does not improve postoperative analgesia. At the doses used in this study, the use of magnesium is associated with short-term decreases in postoperative analgesia.
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Acta Anaesthesiol Scand · Sep 1997
Randomized Controlled Trial Multicenter Study Comparative Study Clinical TrialRecovery characteristics of sevoflurane- or propofol-based anaesthesia for day-care surgery.
Sevoflurane has a low blood-gas partition coefficient resulting in a rapid recovery. Few studies have examined the maintenance and recovery characteristics of sevoflurane compared with propofol in a standardized outpatient population. ⋯ Maintenance of anaesthesia with sevoflurane results in a more rapid emergence, but a higher incidence of nausea and vomiting compared with propofol. The side-effects were minor in our study, and did not result in any difference in time to discharge from the recovery ward or the hospital.
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Acta Anaesthesiol Scand · Sep 1997
Randomized Controlled Trial Comparative Study Clinical TrialIntravenous versus intraperitoneal morphine before surgery to provide postoperative pain relief.
Opioid receptors have been demonstrated on peripheral afferent nerves throughout the body. The aim of the present study was to compare the effects of intravenous and intraperitoneal administration of morphine with regard to pain, postoperative morphine requirement, and recovery after major abdominal surgery, and to describe the pharmacokinetics of intraperitoneal morphine in humans. ⋯ Intraperitoneal administration of 50 mg of morphine before major abdominal surgery is less efficient in reducing pain and postoperative morphine requirements than the same amount of morphine given intravenously.