Articles: nerve-block.
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J Neurosurg Anesthesiol · Apr 2023
Evaluating the Anatomic Spread of Selective Nerve Scalp Blocks Using Methylene Blue: A Cadaveric Analysis.
The modern scalp block consists of local anesthesia injections that target the supraorbital, supratrochlear, zygomaticotemporal, auriculotemporal, and greater and lesser occipital nerves. Limited data exist on the local anesthetic spread that occurs with this technique. This study examines the extent of the spread of a scalp block using methylene blue in a cadaveric model. ⋯ This cadaveric study confirms that the landmark-based technique for scalp blocks consistently stained all 6 nerves involved in scalp innervation. There was significant unintentional spread to the branches of the facial nerve when using the landmark technique.
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Pediatric emergency care · Apr 2023
Case ReportsUltrasound-Guided Paravenous Saphenous Nerve Block for Lower Extremity Abscess Incision and Drainage in a Male Adolescent.
The use of ultrasound-guided regional anesthesia is growing as a modality for analgesia provision within the pediatric emergency department. We present a case in which a paravenous saphenous nerve block was used for anesthesia during incision and drainage of a lower extremity abscess. We further review the technique and literature concerning this straightforward and effective procedure.
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This study aims to determine temperature effect on nerve conduction block induced by high-frequency (kHz) biphasic stimulation (HFBS). ⋯ Temperature has an important influence on HFBS-induced nerve block. The blocking mechanisms underlying acute and poststimulation nerve blocks are likely to be very different.
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To reveal the possible mechanisms underlying poststimulation block induced by high-frequency biphasic stimulation (HFBS). ⋯ This study reveals two possible ionic mechanisms underlying post-HFBS block of axonal conduction. Understanding these mechanisms is important for improving clinical applications of HFBS block and for developing new nerve block methods employing HFBS.