Articles: nerve-block.
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To coincide with the annual scientific meeting of Regional Anaesthesia UK in London 2024, where there is a joint scientific session with the British Journal of Anaesthesia, a special regional anaesthesia edition of the journal has been produced. This editorial offers some highlights from the manuscripts contained within the special edition.
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Histological and micro-ultrasound evidence rebuffs deep-rooted views on the nature of nerve block, nerve damage, and injection pressure monitoring. We propose that the ideal position of the needle tip for nerve block is between the innermost circumneural fascial layer and outer epineurium, with local anaesthetic passing circumferentially through adipose tissue. ⋯ Pressure monitoring cannot differentiate between intrafascicular and extrafascicular injection. High injection pressure only indicates intraneural extrafascicular spread, not intrafascicular spread, because it is not possible to inject into the stiff endoneurium in most human nerves.
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Editorial
Augmented reality in ultrasound-guided regional anaesthesia: useful tool or expensive toy?
Use of augmented reality is increasingly applied in medical education and practice. The main advantage of this technology is the display of relevant information in the visual field of multiple operators. Here we provide a critical analysis of the potential application of augmented reality in regional anaesthesia.