British journal of anaesthesia
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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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Excellent anaesthetists were identified by anaesthesia nurses as being:
- Organised & focused: structured, responsible, and focused approach to work tasks.
- Good communicators: clear and informative, briefing of team about the plan before induction.
- Respectful of complexity: humble to the complexity of anaesthesia, admitting own fallibility.
- Patient-centred: personal contact with the patient before induction.
- Good situational awareness: fluent in practical work without losing overview.
- Calm and clear in critical situations, being able to change to a strong leading style.
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An organizational approach is proposed as an immediate solution for improving postoperative pain (POP) management. The aim was to evaluate the clinical effectiveness of a quality management system (QMS), based on procedure-specific, multimodal analgesic protocols, modified to meet the individual patients' requirements. ⋯ The implementation of QMS allowed the reduction in POP intensity with a simultaneous decrease in analgesia-related side-effects. This has led to an increased quality of life and patient satisfaction.
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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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Review Meta Analysis
Efficacy of adding clonidine to intrathecal morphine in acute postoperative pain: meta-analysis.
Intrathecal clonidine slightly improves the analgesic effects of intrathecal morphine, though increases hypotension (harm ratio 1.8).
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