British journal of anaesthesia
-
Review Meta Analysis
Neuroprotection by anaesthetics in rodent models of traumatic brain injury: a systematic review and network meta-analysis.
Anaesthetic neuroprotection in the setting of traumatic brain injury (TBI) remains unproved and is based upon the results in preclinical experiments. Here, we sought to synthesise the results in rodent models of TBI, and to evaluate the effects of publication bias, experimental manipulation, and poor study quality on the effect estimates. ⋯ Anaesthetics do provide neuroprotection in rodent models of TBI. The effect-size estimates do not appear to be exaggerated by selective publication, experimental manipulation, or study design. The main shortcoming of the included studies were small sample sizes leading to low power and imprecision, which precluded the network meta-analysis from providing a meaningful ranking for efficacy amongst the drugs. Reliable preclinical investigations of neuroprotection by anaesthetics will require larger sample sizes.
-
Randomized Controlled Trial
Effect of intravenous S-ketamine on the MAC of sevoflurane: a randomised, placebo-controlled, double-blinded clinical trial.
Ketamine is routinely used in operating theatres, emergency departments, ICUs, and even outpatient units. Despite the widespread use of ketamine, only basic aspects of its interactions with inhalation anaesthetic agents are known, and formal testing of interactions in humans is lacking. The minimum alveolar concentration (MAC) of inhalation anaesthetics is used to guide the depth of anaesthesia, and several drugs are known to influence the MAC. The aim of this study was to investigate whether intravenous application of ketamine influences the MAC of sevoflurane in humans. ⋯ EudraCT ref. no. 2012-001908-38.
-
Non-technical skills, such as communication or leadership, are integral to clinical competence in anaesthesia. There is a need for valid and reliable tools to measure anaesthetists' non-technical performance for both initial and continuing professional development. This systematic review aims to summarise the measurement properties of existing assessment tools to determine which tool is most robust. ⋯ Though there are seven tools for assessing the non-technical skills of anaesthetists, only ANTS has been extensively investigated with regard to its measurement properties. ANTS appears to have acceptable validity and reliability for assessing non-technical skills of anaesthetists in both simulated and clinical settings. Future research should consider additional clinical contexts and types of measurement properties.
-
The African Surgical Outcomes Study (ASOS) showed that surgical patients in Africa have a mortality twice the global average. Existing risk assessment tools are not valid for use in this population because the pattern of risk for poor outcomes differs from high-income countries. The objective of this study was to derive and validate a simple, preoperative risk stratification tool to identify African surgical patients at risk for in-hospital postoperative mortality and severe complications. ⋯ NCT03044899.
-
Observational Study
Association of preoperative anaemia with postoperative morbidity and mortality: an observational cohort study in low-, middle-, and high-income countries.
Anaemia is associated with poor postoperative outcomes, but few studies have described the impact of preoperative anaemia in low- and middle- (LMICs), and high-income countries (HICs). ⋯ ISRCTN51817007.