The serratus anterior plan (SAP) block is a technique that has recently gained popularity in the context of breast surgery. SAP block resulted in better hemodynamic stability, early ambulation and shorter hospital stay, as well as hospital costs for postoperative breast patients.

We aimed to investigate the effects of the serratus anterior plane block in women undergoing breast surgery, in the intraoperative period.

Inclusion Criteria:

• Between the ages of 18-75,
• ASA I-II-III risk group
• Patients who underwent breast surgery under general anesthesia, who underwent serratus anterior plan block for analgesia, or who were provided analgesia with conventional methods
• Patients whose informed consent was read and whose consent was obtained

Exclusion Criteria:

• who do not want to participate in the study,
• ASA IV-V patients