Articles: nerve-block.
-
Clinical Trial
Brachial plexus examination and localization using ultrasound and electrical stimulation: a volunteer study.
Current techniques of brachial plexus block are "blind," and nerve localization can be frustrating and time consuming. Previous studies on ultrasound-assisted brachial plexus blocks are mostly performed with scanning probes of 10 MHz or less. The authors tested the usefulness of a state-of-the-art, high-resolution ultrasound probe (up to 12 MHz) in identifying the brachial plexus in five locations of the upper extremity and in guiding needle advancement to target before nerve stimulation. ⋯ These preliminary data show that the high-resolution L12-L5 probe provides good quality brachial plexus ultrasound images in the superficial locations i.e., the interscalene, supraclavicular, axillary, and midhumeral regions. The needle technique described here for ultrasound-assisted nerve localization provides real-time guidance and is potentially valuable for brachial plexus blocks.
-
Rev Bras Anestesiol · Aug 2003
[Maxillary nerve block for zygoma and orbital floor fractures reduction].
There are few reports of zygomatic orbital floor or zygomatic arch fractures reduction under regional anesthesia. This study aimed at evaluating extraoral maxillary nerve block for zygoma and orbital floor fractures reduction. ⋯ Zygomatic fractures reduction is feasible under maxillary nerve block when performed in pterygopalatine fossa inducing anesthesia in its two distal branches: zygomaticotemporal and zygomaticofacial nerves.