The Effect of Brachial Plexus Block on Diaphragm Movement

40 ASA grade I - II patients were selected from the patients who underwent shoulder ligament rupture repair surgery under selective general anesthesia combined with brachial plexus block analgesia in the sports medical center of our hospital. They were randomly divided into two groups: high concentration group (group I) and low concentration group (Group II), with 20 cases in each group. 40 patients underwent a single brachial plexus block under ultrasound guidance before general anesthesia.