A Comparison Between a PC and a CC Approach for the Placement of Infraclavicular Perineural Catheters in Hand Surgery

"The high-frequency linear probe will be used to image the axillary artery in the long axis and nearby nerve structures of interest, namely the posterior, lateral and medial bundles. The plane chosen will be located inferior to the clavicle, also in its distal third. The needle will be inserted with a latero-medial orientation in the plane. The initial injection will be a single injection laterally to the axillary artery, where the three nerve bundles are still joined together.~The catheter will then be positioned and its location verified by injecting an additional 5 mL of bupivacaine into the catheter under direct ultrasound visualization. Catheter fixation will be standardized to minimize the risk of accidental displacement and the point of entry of the catheter to the skin will be covered with an opaque dressing."

"The high-frequency linear probe will be used to image the axillary artery in the short axis and nearby nerve structures of interest, namely the posterior, lateral and medial bundles. The plane chosen will be located inferior to the clavicle, in its distal third. The needle will be inserted with a cranio-caudal orientation in the plane. The initial injection will be a single injection posterior to the axillary artery, the expected distribution being a U distribution around the artery.~The catheter will then be positioned and its location verified by injecting an additional 5 mL of bupivacaine into the catheter under direct ultrasound visualization. Catheter fixation will be standardized to minimize the risk of accidental displacement and the point of entry of the catheter to the skin will be covered with an opaque dressing."