British journal of anaesthesia
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Randomized Controlled Trial
Effect of high-dose preoperative methylprednisolone on recovery after total hip arthroplasty: a randomized, double-blind, placebo-controlled trial.
High-dose glucocorticoid may reduce postsurgical pain and improve recovery. We hypothesized that 125 mg methylprednisolone (MP) would reduce time to meet functional discharge criteria after total hip arthroplasty (THA). ⋯ MP 125 mg i.v. before surgery added to a multimodal oral analgesic regime did not reduce time to meet functional discharge criteria after THA, but improved analgesia for the first 24 h.
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Randomized Controlled Trial Comparative Study
Randomized comparison of closed-loop feedback computer-controlled with manual-controlled infusion of phenylephrine for maintaining arterial pressure during spinal anaesthesia for caesarean delivery.
Closed-loop feedback computer-controlled infusion has not been described for administering phenylephrine to maintain arterial pressure (AP) during spinal anaesthesia for caesarean delivery. We aimed to compare AP control using this automated system with a previously described manual infusion system. ⋯ Within the constraints of the studied algorithms, closed-loop feedback computer-controlled phenylephrine infusion provided better AP control with fewer interventions required compared with manual-controlled infusion.
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Review Historical Article
The first intravenous anaesthetic: how well was it managed and its potential realized?
Our speciality commonly traces its origin to a demonstration of the inhalation of ether by a patient undergoing surgery in Boston in 1846. Less well known is the demonstration of the i.v. injection of opium with alcohol into a dog in Oxford in 1656, leading to anaesthesia followed by full long-term recovery. After gaining i.v. access, a mixture of opium and alcohol was injected, resulting in a brief period of anaesthesia. ⋯ It is important to consider why there was a failure to translate the results into clinical practice and nearly 200 yr of potentially pain-free surgery. Possible factors include lack of equipment for i.v. access, lack of understanding of dose-response effects, and a climate of scientific discovery rather than clinical application. Given the current interest in total i.v. anaesthesia, it seems appropriate to identify its origins well before those of inhalation anaesthesia.
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Malignant hyperthermia (MH) is a potentially fatal pharmacogenetic disorder in which intracellular calcium homeostasis in the skeletal muscle of susceptible individuals is disrupted upon exposure to halogenated anaesthetics. While MH is linked to the ryanodine receptor (RYR1) on chromosome 19 and the α1S subunit of the voltage-dependent L-type calcium channel (CACNA1S) on chromosome 1, mutations have been found in only 50-70% of patients, and subsequently, there is a need for a more powerful screening tool. ⋯ In this study, we successfully demonstrate the use of genomic DNA capture and next-generation sequencing for identification of putative mutations causing MH. We also suggest that whole exome sequencing may be necessary to identify MH causing mutations in patients where no mutations in RYR1 and CACNA1S have been identified thus far.
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Randomized Controlled Trial
Single-breath vital capacity high concentration sevoflurane induction in children: with or without nitrous oxide?
Single-breath vital capacity inhalation induction with high concentration sevoflurane (SBVC-HC) is a rapid and 'needleless' technique, preferred and well tolerated in the cooperative child. The addition of nitrous oxide may speed up induction by its second gas effects. Previous studies done in children looking at the effect of N(2)O on this technique lacked power and showed conflicting results. This study aims to investigate the effect of N(2)O on induction time for SBVC-HC sevoflurane induction in children. ⋯ We conclude that for SBVC-HC sevoflurane induction in children, the addition of N(2)O resulted in faster loss of consciousness and reduced excitatory movements.