Effect of ultrasound-guided serratus anterior plane block on postoperative pain in patients under-going breast prosthesis implantation / 临床麻醉学杂志

ABSTRACT

Objective To investigate the effect of ultrasound-guided serratus anterior plane (SAP) block on postoperative pain in patients undergoing breast prosthesis implantation. Methods Fifty patients scheduled for breast prosthesis implantation under general anesthesia, aged 18-40 years, BMI 18-24 kg/m2, falling into ASA physical status Ⅰ or Ⅱ, were randomly divided into two groups (n = 25 each) SAP block group (group N) and control group (group C). Ultrasound-guided bilateral SAP block was performed before induction of anesthesia, and 0.375％ ropivacaine 20 ml was injected bilaterally in group N, while the equal volume of normal saline was used instead in group C. The visual analogue scale (VAS) in resting state was evaluated at 2, 6, 12 and 24 h after surgery. Also, the perioperative opioid consumption, the numbers of PCIA pressing attempts and rescue analgesia, adverse effects and patients′ satisfaction degree within 24 h postoperatively were recorded. Results Compared to group C, the scores of VAS at postoperative 2, 6, 12 and 24 hand the perioperative consumption of opioid were significantly lower, the numbers of PCIA pressing attempts and rescue analgesia were decreased, while patients′ satisfaction degree was increased in group N (P ＜ 0.05).There were no significant differences in adverse reactions between these two groups. Conclusion Ultrasound-guided SAP block reduces the postoperative pain in patients undergoing breast prosthesis implantation.