How to do ultrasonic localization nerve block puncture needle

For a long time, the blind regional nerve block relying on local anatomical markers, acupuncture sensation and neurostimulator has been severely hindered in clinical development and application due to anatomical relationship variation, blood entry, nerve sheath obstruction of local anesthesia drug diffusion and other problems. Nowadays, ultrasound, as the "third eye" of anesthesiologists, has been widely used in clinical work because it can provide real-time guidance technology, visualize the operation and help anesthesiologists to implement precise anesthesia. The basis of ultrasound-guided regional block technology is the acquisition of ultrasonic images and the identification of organizational structure. In this lecture, we will introduce the basic theoretical knowledge of ultrasound, how to use ultrasound to better locate nerves, as well as the operation methods and specifications of ultrasound-guided nerve block, so as to improve the success rate of ultrasound-guided nerve block, improve the analgesic effect, and reduce the adverse reactions of regional block.