Serratus anterior plane block versus erector spinae plane block for thoracoscopic surgery: Response to sun et al

Dear Editor, We thank Sun et al. for their interest in our article, which compares the analgesic efficacy of erector spinae plane block (ESPB) and serratus anterior plane block (SAPB) for thoracoscopic surgery [1]. Our study is a single-center, randomized, prospective study of two groups [2]. We compared T5-level ESPB and SAPB which was performed at the level of 4th–5th ribs in our study. According to our results, ESPB provided better pain control than SAPB in patients who underwent thoracoscopic surgery. However, there may be some considerations in our study, like the other clinical studies in the literature. Sun et al. reported that “The authors only statistically differentiated postoperative pain level, but the difference in baseline (before surgery) between the two groups was not?known” [1].