Journal of clinical anesthesia
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Randomized Controlled Trial
Acoustic lens improves superficial in-plane ultrasound-guided procedures - The significance of the beam width artefact.
The three-dimensional shape of the ultrasound beam produces a thicker scan plane than most users assume. Viewed longitudinally, a needle placed lateral to a vessel just outside the central scanning plane can be displayed incorrectly in the ultrasound image as if placed intravascularly. This phenomenon is called the beam width artefact, also known as the elevation or slice thickness artefact. The goal of this study was to demonstrate the potential negative effect of the beam width artefact on the performance of in-plane ultrasound-guided vascular access procedures, and to provide a solution. ⋯ The beam width artefact has a significant effect on the performance of ultrasound-guided needle-based procedures. The efficacy of in-plane superficial vascular access procedures can be enhanced by narrowing the imaging plane using an acoustic lens.
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Determine the impact of varying doses of fibrinogen concentrate and 4-factor prothrombin complex concentrate on clotting time as measured by thromboelastometry in an in-vitro model of dilutional coagulopathy. ⋯ Fibrinogen concentrate and low dose 4-factor PCC corrected coagulopathy in in-vitro obstetric hemorrhage.
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Observational Study
Prediction of the severity of acute kidney injury after on-pump cardiac surgery.
On-pump cardiac surgery is associated with a high risk of acute kidney injury (AKI), which can substantially affect risk of mortality and morbidity depending on its severity. Current methods are limited in predicting AKI severity. This study aimed to develop and validate a model to predict AKI severity after on-pump cardiac surgery. ⋯ The prediction model incorporating 10 predictors may be useful for predicting severity of AKI after on-pump cardiac surgery.