"Serratus Anterior Plane Block" Versus "Serratus Posterior Superior Plane Intercostal Plane Block" for Patients Undergoing Breast Surgery

The Serrato Posterosuperior Block (SPSIP) is a recently discovered technique that provides analgesia to the hemithorax, shoulders, neck and back. At an anatomical level, it has been seen that this technique allows the diffusion of local anesthetic starting from C7 proceeding dorsally up to T10 by sectioning the trapezius, latissimus dorsi, rhomboid and erector spinae muscles. The serratus anterior block (SAPB) is a technique that allows local anesthetic to be injected between the serratus anterior muscle and the intercostal muscles (deep plane) or between the latissimus dorsi muscle and the serratus anterior muscle (superficial plane), also providing analgesia at of the chest wall. This study aims to compare the analgesic efficacy of SPSIPB and SAPB in patients undergoing radical mastectomy for breast cancer