British journal of anaesthesia
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Randomized Controlled Trial
Effect of gum chewing on gastric volume and emptying: a prospective randomized crossover study.
Current fasting guidelines allow oral intake of water up to 2 h before induction of anaesthesia. We assessed whether gum chewing affects gastric emptying of 250 ml water and residual gastric fluid volume measured 2 h after ingestion of water. ⋯ NCT02673307.
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Randomized Controlled Trial
Influence of Bayesian optimization on the performance of propofol target-controlled infusion.
Target controlled infusion (TCI) systems use population-based pharmacokinetic (PK) models that do not take into account inter-individual residual variation. This study compares the bias and inaccuracy of a population-based vs a personalized TCI propofol titration using Bayesian adaptation. Haemodynamic and hypnotic stability, and the prediction probability of alternative PK models, was studied. ⋯ Dutch Trial Registry NTR4518.
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Randomized Controlled Trial
Use of a hand-held digital cognitive aid in simulated crises: the MAX randomized controlled trial.
Cognitive aids improve the technical performance of individuals and teams dealing with high-stakes crises. Hand-held electronic cognitive aids have rarely been investigated. A randomized controlled trial was conducted to investigate the effects of a smartphone application, named MAX (for Medical Assistance eXpert), on the technical and non-technical performance of anaesthesia residents dealing with simulated crises. ⋯ NCT02678819.
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Heterogeneity among the primary studies included in a systematic review (SR) is one of the most challenging considerations for systematic reviewers. Current practices in anaesthesiology SRs have not been evaluated, but traditional methods may not provide sufficient information to evaluate the true nature of these differences. We address these issues by examining the practices for evaluating heterogeneity in anesthesiology reviews. ⋯ Subgroup analysis was used in 59% Cochrane reviews, while sensitivity analysis was used in 62%. Many reviews did not provide sufficient detail regarding heterogeneity. We are calling for improvement to reporting practices.