British journal of anaesthesia
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Randomized Controlled Trial
Effects of caloric and nutrient content of oral fluids on gastric emptying in volunteers: a randomised crossover study.
Previous studies demonstrated conflicting results regarding the determinants of gastric emptying for fluids. Our aim was to compare gastric emptying times of fluids with different caloric and nutrient content. ⋯ ISRCTN17147574.
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Observational Study
Association of clonal haematopoiesis with severe postoperative complications in patients undergoing radical oesophagectomy.
Clonal haematopoiesis (CH) is an age-associated clonal expansion of blood cells driven by leukaemia-associated somatic mutations. Although CH has been reported to be a risk factor for leukaemia and a number of non-haematopoietic diseases, its role in perioperative medicine remains unexplored. ⋯ ChiCTR2100044175 (Chinese Clinical Trial Registry, http://www.chictr.org.cn/showproj.aspx?proj=123193).
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Randomized Controlled Trial
Opioid-free anaesthesia reduces postoperative nausea and vomiting after thoracoscopic lung resection: a randomised controlled trial.
Intraoperative opioid use has a positive relationship with postoperative nausea and vomiting (PONV), and opioid-free anaesthesia (OFA) might reduce PONV. We investigated whether OFA compared with opioid-based anaesthesia would reduce PONV during the first 2 postoperative days among patients undergoing thoracoscopic lung resection. ⋯ Chinese Clinical Trial Registry (ChiCTR2200059710).
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Observational Study
Association of perioperative plasma concentration of neurofilament light with delirium after cardiac surgery: a nested observational study.
Neurofilament light is a blood-based biomarker of neuroaxonal injury that can provide insight into perioperative brain vulnerability and injury. Prior studies have suggested that increased baseline and postoperative concentrations of neurofilament light are associated with delirium after noncardiac surgery, but results are inconsistent. Results have not been reported in cardiac surgery patients, who are among those at highest risk for delirium. We hypothesised that perioperative blood concentrations of neurofilament light (both baseline and change from baseline to postoperative day 1) are associated with delirium after cardiac surgery. ⋯ Baseline neurofilament light concentration, but not change from baseline to postoperative day 1, was associated with delirium after cardiac surgery.
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The neural mechanisms underlying sevoflurane-induced loss of consciousness and recovery of consciousness after anaesthesia remain unknown. We investigated whether glutamatergic pedunculopontine tegmental nucleus (PPT) neurones are involved in the regulation of states of consciousness under sevoflurane anaesthesia. ⋯ Glutamatergic PPT neurones regulate induction and emergence of sevoflurane anaesthesia.