European journal of anaesthesiology
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Randomized Controlled Trial
Novel needle guide reduces time to perform ultrasound-guided femoral nerve catheter placement: A randomised controlled trial.
Ultrasound-guided nerve blocks have become the standard when performing regional nerve blocks in anaesthesia. Infiniti Plus (CIVCO Medical Solutions, Kalona, Iowa, USA) is a needle guide that has been recently developed to help clinicians in performing ultrasound-guided nerve blocks. ⋯ We found that the use of Infiniti Plus decreased the median time to successfully place a femoral nerve catheter by 33% compared with not using Infiniti Plus. This difference may be more apparent to clinicians undertaking this procedure less often or by those in training as our team was very experienced, had been trained in the technique and was working in a hospital with a large caseload.
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Observational Study
Determination of a cut-off value of antral area measured in the supine position for the fast diagnosis of an empty stomach in the parturient: A prospective cohort study.
Ultrasound measurement of the antral cross-sectional area of the stomach, performed in the supine position, has been described for preoperative assessment of gastric content in the adult, but, to date, no study has determined the cut-off value of the antral area for the diagnosis of an empty stomach in the parturient. Nevertheless, previous studies in parturients have reported that the use of a simple qualitative grading scale (0 to 2) was reliable for the estimation of the gastric fluid volume. However, this qualitative grading score requires turning the parturient into the right lateral decubitus position for the ultrasound examination, something which may not be easily feasible, particularly in the case of an obstetric emergency. ⋯ With a parturient lying in the supine position, a single assessment of the antral cross-sectional area may be used for the fast diagnosis of an empty stomach. This tool could be useful in assessing the risk of aspiration for parturients who require emergency anaesthesia during labour.
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Perioperative oxygen (O2) therapy can cause hyperoxia. Extreme hyperoxia can injure the cardiovascular system and remote organs. ⋯ Continuous moderate hyperoxia and cyclic moderate hyperoxia/anoxia-induced endothelial inflammation, apoptosis and necrosis. Given the large surface area of the vascular endothelium, moderately elevated O2 levels may contribute to cardiovascular inflammation and injury.