Anaesthesia and intensive care
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The administration of chloroform by John Snow to Queen Victoria to provide analgesia for the delivery of her children was a pivotal moment in the development of anaesthesia. It has long been thought that this was the only occasion she had experienced anaesthesia but examination of her diaries shows this to be untrue.
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Anaesth Intensive Care · Nov 2020
Paper trails: History of the first Australian paper on ether anaesthesia.
In September 1847, David John Thomas read a paper on etherisation at a monthly meeting of the Port Phillip Medical Association. Thomas' paper is the earliest known presentation of a paper on etherisation in the Australian colonies. ⋯ The original manuscript was acquired at an unknown date by the Medical Society of Victoria. Although a full transcript of the manuscript was published in 1933, the original manuscript of Dr Thomas remained unknown to anaesthesia historians and is now held by the Medical History Museum, University of Melbourne.
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Anaesth Intensive Care · Nov 2020
Postoperative use of slow-release opioids: The impact of the Australian and New Zealand College of Anaesthetists/Faculty of Pain Medicine position statement on clinical practice.
Dose titration with immediate-release opioids is currently recommended for acute pain. The Australian and New Zealand College of Anaesthetists and the Faculty of Pain Medicine released a statement in March 2018 supporting their use in the treatment of opioid-naïve patients; however, the impact of this statement on clinical practice is currently unknown. This retrospective cohort study was conducted to compare opioid prescribing patterns before and after the release of the recommendations. ⋯ After adjusting for confounders, the odds of slow-release opioids being prescribed postoperatively and at discharge reduced by 86% and 88%, respectively (postoperative period: odds ratio 0.14, P < 0.05; discharge: odds ratio 0.12, P < 0.05). In addition, orthopaedic patients were more likely to receive slow-release opioids, consistent with existing literature. As the use of slow-release opioids has been associated with increased harm and protracted opioid use compared to immediate-release opioids, it is hoped that wider dissemination of these recommendations and a change in prescribing practice can be a step towards overcoming the opioid crisis.
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Anaesth Intensive Care · Nov 2020
The East-Freeman Automatic Vent: An interesting footnote in the history of mechanical ventilation.
An example of the East-Freeman Automatic Vent from Oxford was found in the early anaesthesia equipment collection at St George Hospital, Sydney. It weighs less than 200 g and is representative of a group of miniature ventilators that were described in the 1960s, including the Minivent from South Africa and the Microvent from Canada. All relied on a pressure-operated inflating valve that was described in 1966 by Mitchell and Epstein from Oxford. ⋯ This led to pressure in the lungs rising towards the driving pressure. There was a risk of barotrauma to the patient if the system was not promptly disconnected. While theyhad provided an alternative to hand bagging, they were superseded, as more sophisticated and safer ventilators became widely available.
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Anaesth Intensive Care · Nov 2020
ReviewAnaesthesia for ophthalmic procedures in patients with thyroid eye disease.
Thyroid eye disease is an autoimmune inflammatory disorder of the orbit in adults. It causes inflammation, expansion and fibrosis of orbital fat, muscles and the lacrimal gland, leading to facial disfigurement, functional disability and, in severe cases, blindness. Overall, approximately 20% of affected patients need some form of surgical intervention requiring anaesthesia. ⋯ In addition, the contralateral eye should be checked and, if necessary, protected against corneal exposure. Retrobulbar, peribulbar and sub-Tenon's blocks are best avoided. Topical anaesthesia has been used for some strabismus correction surgery but its use is limited to motivated and cooperative patients only.