Efficacy of Ketamine Added to Local Anesthetic in Modified Pectoral Block for Management of Postoperative Pain

"Modified Pecs block was performed under general anesthesia, and 15 min. before skin incision. We performed the modified Pecs block or the Pecs II block by using a two needle approach instead of one. The first puncture is a Pecs I block with 10 ml of local anesthetic injected between the two pectoralis muscles, and the second puncture injects 20 ml of local anesthetic between the Pectoralis minor muscle and the serratus muscle. This breaks through the 'axillary door' and will reach the long thoracic nerve and reliably at least two intercostal nerves.~We used A high frequency linear US probe is used for this block. a broadband linear array probe, with an imaging depth of 3-4cm. starting from the lateral third of the clavicle and moving distally and laterally to the mid axillary line."