[Influence of stimulating different cords on the efficacy of infraclavicular brachial plexus block].

Objective: Stimulating lateral or posterior cord may produce different anesthesia extent because of different anatomical position of the two plexus at the infraclavicular region. We To explore the difference in the efficacy of infraclavicular brachial plexus block by stimulating different cords of the infraclavicular brachial plexus.

Methods: 70 patients of the ASA physical status class I - II, aged 14 - 64, scheduled for elective surgical procedures below elbow underwent infraclavicular brachial plexus block with the Wilson's approach via the point 2 cm medial and caudal to the coracoid process guided by nerve stimulator, to simulate the lateral cord (n = 32) or posterior cord (n = 38).

[Low minimal stimulating current improves infraclavicular brachial plexus block efficacy].

Objective: To investigate if low minimal stimulating current used in nerve stimulator localizing is associated with a greater likelihood of infraclavicular block success.

Methods: 188 patients, aged 14 to 64, of ASA physical status class I - II, and scheduled for surgical procedures below elbow were assigned to low current group (Group A, n = 118) or regular current group (Group B, n = 70) according to the last figure of admission number. The infraclavicular plexus block was performed using the Wilson's approach 2 cm medial and caudal to the coracoid process guided by nerve stimulator with 30 ml of 0.