Sixty patients were randomly allocated into two groups by computerised process, each including 30 patients. PECS group (P) received general anesthesia and pectoral nerve block(PECS block) with 025% ropivacaine after surgical resection of breast by operator. Control group(C) only received general anesthesia.
A Patient -controlled analgesia(PCA) device provides fentanyl for postoperative pain control.
The Primary outcome measures total dose of fentanyl consumption during the postoperative 24 hours, and secondary outcome measures pain scores at rest and movement.
