Results
serratus anterior muscle, breast cancer
BREAST CANCER
From 182 breast cancer surgeries performed between December 2015 and April 2016, 133 cases did not meet inclusion criteria because different types of surgery were performed including mastectomy only, lumpectomy or other breast-sparing surgery. A total of 49 patients were randomized and allocated to the Group II—general anesthesia with SAM + PECS I protocol (n = 25) or Group I general anesthesia only protocol (n = 24). For the follow-up in this study, which was performed 12 months after surgery, five patients were excluded. A total of 44 patients (22 in each group) were included in the analysis (Fig. CONSORT flowchart of the surgeries performed during study development. General + SAM/PECS I: patients submitted to general anesthesia with serratus anterior muscle (SAM) block and pectoral nerves (PECS) block type I during mastectomy. General anesthesia only: patients submitted to general anesthesia only during mastectomy.