Effect of ultrasound-guided serratus plane block on efficacy of postoperative analgesia in patients undergoing video-assisted thoracoscopic surgery / 中国医师进修杂志

ABSTRACT

Objective To investigate the effect of ultrasound-guided serratus plane block (SAPB) on efficacy of postoperative analgesia in patients undergoing video- assisted thoracoscopic surgery. Methods Sixty patients scheduled for video- assisted thoracoscopic radical resection of lung cancer under general anesthesia from October 2017 to April 2018 were divided into 2 groups by random digits table method with 30 cases each SAPB group and control group. After induction of anesthesia, ultrasound-guided homolateral SAPB was performed, and 0.5％ ropivacaine 20 ml was injected in SAPB group, while the equal volume of normal saline was used instead in control group. The patients received intravenous analgesia after operation in 2 groups. The scores of visual analogue score (VAS) and Bruggrmann comfort score (BCS) were evaluated at 1, 2, 4, 6, 12, 24 and 48 h after operation. The consumption of additional pain medication within 48 h after operation and remifentanil during operation were recorded. The adverse effects were also recorded. Results The VAS scores at postoperative 1, 2, 4, 8 and 12 h in SAPB group were significantly lower than those in control group (2.70 ± 0.92) scores vs. (5.10 ± 2.04) scores, (2.80 ± 1.00) scores vs. (5.13 ± 1.78) scores, (3.07 ± 1.17) scores vs. (4.93 ± 1.53) scores, (3.13 ± 1.07) scores vs. (4.63 ± 1.47) scores and (2.87 ± 0.73) scores vs. (3.83 ± 1.29) scores, P <0.05; the BCS scores at postoperative 1, 2, 4, 8 and 12 h in SAPB group were significantly better than those in control group (1.90 ± 0.66) scores vs. (0.93 ± 0.91) scores, (2.03 ± 0.41) scores vs. (0.90 ± 0.80) scores, (1.90 ± 0.40) scores vs. (1.07 ± 0.69) scores, (1.97 ± 0.32) vs. (1.20 ± 0.66) scores and (2.03 ± 0.18) scores vs. (1.73 ± 0.45) scores, and there were statistical differences (P<0.05). The dose of remifentanil consumption of additional pain medication within 48 h in SAPB group were significantly lower than those in control group (0.23 ± 0.03) mg vs. (0.34 ± 0.03) mg and (26.67 ± 25.37) mg vs. (40.00 ± 24.21) mg, and there were statistical differences (P<0.05). There was no significant difference in the incidence of adverse reactions between 2 groups (P > 0.05). Conclusions The SAPB can reduce the early pain after video-assisted thoracoscopic radical resection of lung cancer, improve the comfort of patients, enhance the effect of postoperative analgesia and reduce the use of postoperative analgesic drugs.