We read with great interest the recently published article that compared the erector spinae plane block (ESPB) with thoracic paravertebral block (TPVB) for postoperative analgesia after video-assisted thoracic surgery (Sobhy et al.2023). We wish to add a few discussions on this topic in the form of a "Letter to the Editor" manuscript.

The authors concluded that US-guided ESPB may be regarded as a safe and effective substitute to TPVB owing to its straightforward technique with superficial anatomical landmarks, superior patient satisfaction, and lower time consumption in performing the block. However, while discussing the time for the first postoperative rescue analgesic and the total amount of rescue opioids, they state that there was no statistically significant difference between the two groups. They used the references of Zhao et al. 2020 and Ciftci et al. 2019 (we use the year of EPub of that article i.e 2019 although it was allotted to an issue in 2020 to avoid confusion with another article by the same authors published in the same year) to corroborate their findings, stating that Ciftci et al. 2019 noted that there was no discrepancy between the ESPB and TPVB rescue analgesia (meperidine) which was administered to 10 patients in the ESPB group and 12 patients in the TPVB group