Serratus Anterior Plane Block to Prevent Chronic Postoperative Pain in Breast Cancer

A deep analgesic block of the Serratus anterior plane block (SAPB) type by echo-guided lateral approach will be performed by An 8-13 Mhz high frequency linear ultrasound probe witch will be located cranio-caudally, transversely to the 3rd and 4th intercostal space on the mid-axillary line while patients are supine with the ipsilateral upper limb raised to 90°. Once the landmark anatomical structures have been identified (upper rib, lower rib, pleural line, Serratus muscle, superficial structures), the puncture will begin Under aseptic conditions, an 80 mm 22 gauge needle will be inserted into the "in-plane" view of the ultrasound probe. When the needle has reached the plane under Serratus between the Serratus muscle and the intercostal muscle opposite the lower edge of the upper rib, 30 ml of 1% Lidocaine will be administered.

A deep analgesic block of the Serratus anterior plane block (SAPB) type by echo-guided lateral approach will be performed by An 8-13 Mhz high frequency linear ultrasound probe witch will be located cranio-caudally, transversely to the 3rd and 4th intercostal space on the mid-axillary line while patients are supine with the ipsilateral upper limb raised to 90°. Once the landmark anatomical structures have been identified (upper rib, lower rib, pleural line, Serratus muscle, superficial structures), the puncture will begin Under aseptic conditions, an 80 mm 22 gauge needle will be inserted into the "in-plane" view of the ultrasound probe. When the needle has reached the plane under Serratus between the Serratus muscle and the intercostal muscle opposite the lower edge of the upper rib, 30 ml of saline solution