Nerve localization using peripheral nerve stimulation (PNS) is affected by tissue properties, the anatomy surrounding the nerve, and characteristics of the stimulus waveform. A better understanding of the factors influencing PNS should lead to improved nerve localization techniques for use in regional anesthesia. A finite element approach is described here that includes capacitive effects and accounts for frequency-dependent tissue properties in a computationally efficient manner. The modeling approach can be applied to other bioelectric problems where capacitive effects may be important.
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http://dx.doi.org/10.1109/IEMBS.2009.5332515 | DOI Listing |
Cell Mol Biol (Noisy-le-grand)
January 2025
Harran University Faculty of Veterinary Medicine Department of Anatomy, Sanliurfa, Turkey.
A pathological condition in the peripheral nerve tissue, which provides the connection between the organism and the external environment, negatively affects the standard of living. The nerve tissue histotechnology is of serious importance both for scientific studies and for clinical diagnosis. The fixation, which is one of the leading procedures for histological examination of tissues, aims to preserve tissue morphology.
View Article and Find Full Text PDFSci Rep
January 2025
Biomedical Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA.
Over 50% of individuals with lower limb loss report a fear of falling and avoiding daily activities partly due to a lack of plantar sensation. Providing direct somatosensory feedback via neural stimulation holds promise for addressing this issue. In this study, three individuals with lower limb loss received a sensory neuroprosthesis (SNP) that provided plantar somatosensory feedback corresponding to prosthesis-floor interactions perceived as arising from the missing foot generated by electrically activating the peripheral nerves in the residuum.
View Article and Find Full Text PDFBr J Anaesth
January 2025
Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL, USA; CEU-San-Pablo University School of Medicine, Madrid, Spain; Department of Anesthesiology, Madrid-Montepríncipe University Hospital, Madrid, Spain. Electronic address:
Background: We investigated the intraneural spread of injected fluid in brachial plexus nerve roots, examining the potential for intrafascicular spread and identifying influencing factors.
Methods: Twelve deliberate ultrasound-guided intraneural injections were performed at the ventral rami of the brachial plexus nerve roots at their exits from the neuroforamina in six fresh, unembalmed, cryopreserved human cadavers. A 22-G, 30-degree bevel echogenic regional anaesthesia needle was used.
Toxicology
January 2025
Department of Medical Elementology and Toxicology, Jamia Hamdard, Delhi, India, 110062. Electronic address:
Malathion is an organophosphate compound widely used as an insecticide in the agriculture sector and is toxic to humans and other mammals. Although several studies have been conducted at different level in different animal models. But there is no work has been conducted on the toxicological correlation from cellular to behavioral level on surviving species model.
View Article and Find Full Text PDFJ Plast Reconstr Aesthet Surg
December 2024
Division of Plastic and Reconstructive Surgery, Rush University Medical Center, Chicago, IL, United States. Electronic address:
The timing of nerve blocks for amputation surgery with immediate targeted muscle reinnervation (TMR) has been disputed. Traditional practices often defer nerve blocks until post-amputation, fearing interference with motor nerve target identification for TMR. Here, we present a case series demonstrating that pre-amputation regional nerve blocks do not prevent the identification of motor nerve targets.
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