Anaesthesia and Intensive Care最新文献

{"title":"The Bruck inhaler: An ether inhaler misattributed to Ludwig Bruck, an Australian medical publisher and supplier of medical equipment.","authors":"Rajesh P Haridas, Michael G Cooper, Andrew J Kennedy","doi":"10.1177/0310057X241285171","DOIUrl":"https://doi.org/10.1177/0310057X241285171","url":null,"abstract":"<p><p>The acquisition of an early ether inhaler stimulated research into several inhalers classified as Bruck inhalers. Ludwig Hermann Bruck was a German migrant who arrived in Australia in 1873. He became a medical publisher, importer of medical instruments, and made unique contributions to early Australian medical publishing, most significantly as the first publisher of <i>The Australasian Medical Gazette</i>. He also published <i>The Australian Medical Directory and Handbook</i> which contained lists of unregistered medical practitioners and alternative therapists. In 1914, Bruck joined in business with Richard Thomson who had a company selling medical equipment to doctors and hospitals. During the First World War, both Bruck and Thomson were charged with trading with the enemy. Bruck committed suicide in August 1915 before the case was heard in court. We did not find any evidence that Bruck designed the inhaler later attributed to him. The Bruck inhaler is functionally similar to the Probyn-Williams inhaler and should therefore be regarded as a glass-domed version of this inhaler.</p>","PeriodicalId":7746,"journal":{"name":"Anaesthesia and Intensive Care","volume":" ","pages":"310057X241285171"},"PeriodicalIF":1.1,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143045611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of polymyxin B haemoperfusion on septic shock caused by Gram-positive bacteria.","authors":"Soichi Tanaka, Junpei Haruna, Satoshi Kazuma, Hiroomi Tatsumi, Yoshiki Masuda","doi":"10.1177/0310057X241284300","DOIUrl":"https://doi.org/10.1177/0310057X241284300","url":null,"abstract":"<p><p>Polymyxin B haemoperfusion is commonly used to adsorb endotoxins in septic shock caused by Gram-negative bacterial infections. Polymyxin B haemoperfusion has been reported to improve hypotension in Gram-positive bacterial infections; however, its efficacy and mechanism in treating such cases are unclear. We hypothesised that polymyxin B haemoperfusion would be equally effective in improving haemodynamics during Gram-positive bacterial infections as in Gram-negative bacterial infections. We conducted a retrospective study that included patients with septic shock admitted to the intensive care unit. The patients were divided into two groups according to bacterial culture results: Gram-negative rod (GNR) and Gram-positive coccus (GPC). We calculated the vasoactive inotropic score (VIS) before (0 h) and 2, 6, 12 and 24 h after polymyxin B haemoperfusion therapy. Data were analysed using two-way analysis of variance and post hoc tests for the associations between infection type and treatment time. Overall, 157 patients with septic shock were enrolled in the study: 81 and 76 patients were treated or not treated with extracorporeal haemoperfusion therapy, respectively. Although there was no significant difference in the VIS in polymyxin B haemoperfusion between patients with GNR and GPC infections, there was a significant decrease in the VIS over time, even when GPC was the causative organism. In addition, the degree of reduction in the VIS was significantly different in both the GNR and GPC groups compared with that in the non-extracorporeally treated group. Thus, polymyxin B haemoperfusion for septic shock caused by GNR reduced the VIS and could be effective even in cases of GPC infection.</p>","PeriodicalId":7746,"journal":{"name":"Anaesthesia and Intensive Care","volume":" ","pages":"310057X241284300"},"PeriodicalIF":1.1,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143045607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A feasibility study of measuring maternal anaemia and postoperative outcomes after caesarean section.","authors":"Mark O'Donnell, Alicia T Dennis","doi":"10.1177/0310057X241275127","DOIUrl":"https://doi.org/10.1177/0310057X241275127","url":null,"abstract":"<p><p>SummaryIron-deficiency anaemia (IDA) is a global health problem. The impact of IDA on outcomes in obstetric patients who undergo caesarean section (CS) is unknown. We assessed the feasibility of conducting a large study to investigate perioperative anaemia and outcomes after CS. With ethics approval and trial registration, 60 obstetric patients (30 planned CS, 30 emergency CS) were included. Feasibility categories were willingness to participate in a study, to undergo additional blood tests (haemoglobin, ferritin), to have weight measured and to undertake quality of recovery (QoR) questionnaires. Of eligible people approached, 100% agreed to participate and 100% would participate in a future study. Ninety percent (95% confidence interval (CI) 82.4% to 97.6%) and 83% (95% CI 73.9% to 92.7%) agreed to additional tests in hospital and after discharge, respectively. Ninety-eight per cent (95% CI 95.1% to 100%) consented to being weighed, and 100% completed QoR questionnaires. Preoperatively, 8.5% (95% CI 1.4% to 15.6%) of participants were anaemic. Postoperative haemoglobin was measured in only 22 (36.7%, 95% CI 24.5% to 48.9%) participants, and 40.9% (95% CI 20.4% to 61.5%) were anaemic, suggesting at least a quadrupling of the proportion of anaemic patients from pre- to postoperatively. Ferritin was not measured postoperatively in any participant. The prevalence of participants discharged with IDA was unquantifiable. Postoperative IDA in obstetric patients is likely to be a serious problem that is currently unrecognised. Our data suggest that a definitive study to determine associations between maternal anaemia and perioperative outcomes after CS surgery is feasible.</p>","PeriodicalId":7746,"journal":{"name":"Anaesthesia and Intensive Care","volume":" ","pages":"310057X241275127"},"PeriodicalIF":1.1,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142930618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The effect of type of anaesthetic on delirium after surgery for acute hip fracture: An instrumental variable analysis to assess causation.","authors":"Anna-Marie G Tanios, Emily L Gallagher, Michael S McManus, John A Riordan, Ian A Harris, Lara A Harvey","doi":"10.1177/0310057X241275116","DOIUrl":"https://doi.org/10.1177/0310057X241275116","url":null,"abstract":"<p><p>Delirium is the most common in-hospital complication affecting older adults with acute hip fractures. Current evidence demonstrates inconsistent associations between anaesthetic type for acute hip fracture surgery and postoperative delirium. Using the Australian and New Zealand Hip Fracture Registry database, we conducted a retrospective cohort study of patients aged 50 years and over who underwent acute hip fracture surgery between 2015 and 2020. The incidence of delirium in patients who received general anaesthesia alone or combined with a regional technique, versus those who received spinal or regional anaesthesia was assessed. Multivariable multilevel logistic regression was used to test associations between anaesthetic type and delirium controlling for known confounders. Finally, given hospital variation in preference for anaesthetic type, an instrumental variable analysis was performed to include the effect of both known and unknown confounding. Of 35,252 patients, 25,682 (72.9%) patients received general anaesthesia, and 9570 (27.2%) patients received spinal or regional anaesthesia for their hip fracture surgery. A higher proportion of patients who received general anaesthesia developed delirium than those who received spinal or regional anaesthesia (40.6% vs. 35.7%, odds ratio (OR) 1.23, 95% confidence intervals (CI) 1.18 to 1.30, <i>P</i> < 0.0001). After adjusting for known confounders, general anaesthesia patients were at slightly increased odds of developing delirium (OR 1.14, 95% CI 1.04 to 1.25, <i>P</i> = 0.0052). However, the instrumental variable analysis found no statistically significant difference between groups (OR 1.03, 95% CI 0.99 to 1.07, <i>P</i> = 0.141). Therefore, while a weak association was found between general anaesthesia exposure and postoperative delirium, an instrumental variable analysis to compensate for unmeasured confounding showed no causal association between general anaesthesia and postoperative delirium.</p>","PeriodicalId":7746,"journal":{"name":"Anaesthesia and Intensive Care","volume":" ","pages":"310057X241275116"},"PeriodicalIF":1.1,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142930605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Communication skills, patient voices and the art of listening.","authors":"Joanna R Sutherland, Helen Maxwell-Wright","doi":"10.1177/0310057X241266006","DOIUrl":"https://doi.org/10.1177/0310057X241266006","url":null,"abstract":"","PeriodicalId":7746,"journal":{"name":"Anaesthesia and Intensive Care","volume":" ","pages":"310057X241266006"},"PeriodicalIF":1.1,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142930629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Factors associated with poor intraoperative perfusion and postoperative complications in otolaryngological autologous tissue transfers: A single-centre retrospective observational study.","authors":"Steven C Eastlack, Adriano A Bellotti, Wesley H Stepp, Joshua B Cadwell, Alan M Smeltz","doi":"10.1177/0310057X241275112","DOIUrl":"https://doi.org/10.1177/0310057X241275112","url":null,"abstract":"<p><p>The purpose of this study was to identify haemodynamic factors that are associated with tissue hypoperfusion in flap/graft surgical patients that might be modified to reduce perioperative morbidity. We conducted a single-centre, retrospective, observational study of 1355 patients undergoing head and neck flap reconstructions. Logistic regression and chi-square analyses were employed to identify factors which signal perioperative complications. Study endpoints included postoperative lactic acidosis, acute kidney injury (AKI) and early surgical flap revision surgery. Intraoperative data were collected as time-weighted averages of the haemodynamic variables, including pulse pressure variation (PPV), mean arterial pressure, and vasopressor doses. Cumulative volume was used for intravenous (IV) fluids. Relevant patient comorbidities were also included in the analysis. The most common complication was hyperlactataemia (22.9%), followed by AKI (14.1%) and take-back surgery (3.3%). No patient factors were significantly correlated with flap complications. Elevated max PPV was significantly associated with elevated lactate and AKI in univariate regression, but only AKI in the multivariate analysis (<i>P</i> = 0.003). Case duration was the only variable associated with take-back surgery in the multivariate regression (<i>P</i> = 0.007); it was also associated with lactic acidosis (<i>P</i> = 0.003). Neither IV fluid administration nor the use of vasopressors appeared to be associated with study outcomes in the multivariate analysis.</p>","PeriodicalId":7746,"journal":{"name":"Anaesthesia and Intensive Care","volume":" ","pages":"310057X241275112"},"PeriodicalIF":1.1,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142930639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A cost analysis of the anaesthetic management of patients with confirmed or suspected coronavirus disease 2019 (COVID-19) in a tertiary referral hospital in Queensland, Australia.","authors":"Anthony T Hodge, Angela R Tognolini, Elizabeth K Martin, Victoria A Eley","doi":"10.1177/0310057X241272108","DOIUrl":"https://doi.org/10.1177/0310057X241272108","url":null,"abstract":"<p><p>The coronavirus disease 2019 (COVID-19) pandemic in Australia resulted in significant additional infection control precautions for consumers and the health workforce. Prior to widespread vaccine availability, substantial changes were made to the operating theatre management of patients presenting for surgery with suspected or diagnosed COVID-19. This study aimed to calculate the actual costs of operating theatre care for patients with confirmed or suspected COVID-19. Data were prospectively collected for all patients presenting for surgery with confirmed or suspected COVID-19 at the Royal Brisbane and Women's Hospital. Information collected included patient characteristics, surgical and anaesthesia details, equipment, theatre utilisation, staffing and cleaning. The associated variable costs and usual costs of care were calculated according to the Australian National Efficient Price. We compared estimated usual costs with those estimated for patients with confirmed or suspected COVID-19. Twenty-four patients with suspected COVID-19 infection underwent surgery between May 2020 and February 2021. Cost analysis revealed a mean (standard deviation (SD), range) increase in costs of providing perioperative care for COVID-19 suspect patients of A$2252 (A$2570, A$315.85-10,398); that is, a mean of 207.5% more than usual care costs. This was primarily due to the increased number of staff and time required to complete these cases with appropriate infection control.</p>","PeriodicalId":7746,"journal":{"name":"Anaesthesia and Intensive Care","volume":" ","pages":"310057X241272108"},"PeriodicalIF":1.1,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142930615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Association of medical emergency team activation in the 24-hour postoperative period with length of stay and in-hospital mortality.","authors":"Tess I Donoghue, Matthew J Brain","doi":"10.1177/0310057X241272107","DOIUrl":"https://doi.org/10.1177/0310057X241272107","url":null,"abstract":"<p><p>Medical emergency team (MET) activations were designed to improve patient safety and outcomes by providing timely and specialised care to patients experiencing clinical deterioration. The primary objective of this study was to describe the association between MET events in the early (24-h) postoperative period and in-hospital mortality as well as length of stay. A retrospective data linkage study was performed of prospectively collected data from patient administrative data and the MET database at Launceston General Hospital located in Tasmania, Australia. Over five years, 109,116 operating room cases fulfilled the inclusion criteria, of which 85,235 were the first operating room case in a unique admission episode after exclusions. A MET event within the first 24 h after surgery was associated with an increased median length of stay from 0.16 to 4.00 days with a median difference of 2.96 days (95% confidence interval (CI) 2.86 to 3.08) and more than doubled the hazard of mortality for each day a patient remained in hospital after completion of surgery (hazard ratio 2.3, 95% CI 1.9 to 2.8). Emergency surgical patients were at higher risk. Of recorded MET triggers, cardiac arrest was the most strongly associated event with in-hospital mortality. Notably, staff concern as a trigger for MET activation was associated with a hazard nearly as great as chest pain. Other MET triggers that reached statistical significance were bleeding, respiratory rate more than 36/min, peripheral oxygen saturations less than 84% and systolic blood pressure less than 80 mmHg. Despite being frequent, MET events should be regarded as a serious marker of an adverse patient journey that may warrant higher resource allocation.</p>","PeriodicalId":7746,"journal":{"name":"Anaesthesia and Intensive Care","volume":" ","pages":"310057X241272107"},"PeriodicalIF":1.1,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142930621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Culprit allergen prevalence in polyreactive individuals reflects prescription trends: A tool for estimating comparative anaphylaxis risk using the example of neuromuscular blocking agents.","authors":"Paul Hm Sadleir, Catherine E Goddard, Russell C Clarke, Peri S Mickle, Peter R Platt","doi":"10.1177/0310057X241275115","DOIUrl":"https://doi.org/10.1177/0310057X241275115","url":null,"abstract":"<p><p>Prescription-event monitoring (PEM) is the current gold standard for determining the risk of rare drug side-effects and comparing the risk between agents; however, spontaneous or prompted reporting schemes have low case-detection rates and exposure may be difficult to estimate. A novel method is described that allows a comparative adverse event rate between two drugs to be estimated-based on patterns of cross-reactivity-requiring only a sample of cases and no direct knowledge of drug exposure rates. Agreement was compared between the novel method and historical estimates of risk using PEM for comparative risk of rocuronium versus vecuronium anaphylaxis. The novel method was applied to a sample of patients investigated by the Western Australian Anaesthetic Drug Reaction Clinic over a 21-year period. Relative population exposure was estimated from the number of patients with either rocuronium or vecuronium anaphylaxis subsequently shown to be reactive on skin testing to both agents. This was used to correct the total number of cases of hypersensitivity triggered by each agent. Measures of spread were by bootstrap sampling. Historical estimates were gathered by literature review. Additional comparisons of agreement between estimates made by the novel method and PEM were made using cross-reactivity data and PEM rates reported in the literature. There was agreement between estimates of comparative anaphylaxis risk between the novel method and PEM. Two-hundred and twenty-eight cases of anaphylaxis were observed, 89% caused by rocuronium. Patients reactive to both agents were more likely to be female, and had a higher acute mast cell tryptase level. Patients with a history of rocuronium anaphylaxis were more likely to be reactive to one agent only (69% <i>vs</i>. 33%, <i>P</i> < 0.01). It was estimated that rocuronium was prescribed 3.9 times more frequently than vecuronium. When the observed proportion of cases was corrected for exposure rate, the risk of rocuronium anaphylaxis was 2.2 times that of vecuronium (95% confidence interval 1.7 to 2.8). The median risk from historical estimates was 4.7 times, while the previous PEM estimate in Western Australian was 3.0 times. Using a subgroup of patients susceptible to the same side-effect of two drugs, the relative exposure rate and corrected comparative risk of an adverse effect can be estimated for a population. Using this technique, which requires assessment only of cases to estimate relative exposure rates, we have estimated that the risk of anaphylaxis from rocuronium to be 2.2 times that of vecuronium in Western Australia.</p>","PeriodicalId":7746,"journal":{"name":"Anaesthesia and Intensive Care","volume":" ","pages":"310057X241275115"},"PeriodicalIF":1.1,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142930630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Documentation of informed consent for anaesthesia: A single-site retrospective audit at a rural Australian hospital.","authors":"Yannick J De Silva, Luke Anderson","doi":"10.1177/0310057X241281364","DOIUrl":"https://doi.org/10.1177/0310057X241281364","url":null,"abstract":"","PeriodicalId":7746,"journal":{"name":"Anaesthesia and Intensive Care","volume":" ","pages":"310057X241281364"},"PeriodicalIF":1.1,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142930634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}