British journal of anaesthesia
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Editorial Comment Meta Analysis
There is (probably) no (meaningful) difference in (most) outcomes between 'spinal' and 'general' anaesthesia for hip fracture surgery: time to move forward.
A meta-analysis influenced by two recent large randomised controlled trials (REGAIN and RAGA) concluded that little, if any, difference in commonly measured outcomes exists between patients administered spinal or general anaesthesia for their hip fracture surgery. We explore whether there is genuinely no difference, or what the methodological problems in research might be that prevent any real difference from being observed. We also discuss the need for greater nuance in future research to determine how anaesthetists might deliver perioperative care towards improving postoperative recovery trajectories in patients following hip fracture.
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Randomized Controlled Trial Observational Study
Validation of three nociception indices to predict immediate postoperative pain before emergence from general anaesthesia: a prospective double-blind, observational study.
Nociception monitoring devices are designed to estimate nociception during general anaesthesia. We evaluated the predictive accuracy of heart rate and three nociception indices to predict postoperative pain before emergence from general anaesthesia. ⋯ NCT05063227.
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Randomized Controlled Trial
Effect of transauricular nerve stimulation on perioperative pain: a single-blind, analyser-masked, randomised controlled trial.
Activation of central autonomic pathways, including those regulating the arterial baroreflex, might reduce acute pain. We tested the hypothesis that transcutaneous auricular nerve stimulation (TAN) reduces pain after orthopaedic trauma surgery through autonomic modulation. ⋯ Bilateral TAN reduces perioperative pain through autonomic modulation. These proof-of-concept data support a non-pharmacological, generalisable approach to improve perioperative analgesia.
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Editorial Comment Meta Analysis
Importance of sequential methods in meta-analysis: implications for postoperative mortality, delirium, and stroke management.
Trial sequential analysis is an adaptation of frequentist sequential methods that can be used to improve inferences from meta-analysis. Trial sequential analysis can help preserve type I and type II error rates at desired levels for analyses conducted before the required information size. Through three case studies recently published in the British Journal of Anaesthesia, we show how trial sequential analysis can inform the interpretation of meta-analyses. Limitations of trial sequential analysis, which also include those of the meta-analysis to which it is applied, must be carefully considered alongside its benefits.