Erector spine plane block as postoperative rescue analgesia in thoracic surgery

Objective: Erector spine plane block (ESPB) is a newly defined regional anesthesia technique performed by injection of local anesthetic beneath the erector spine muscle. We tested ESPB as a regional rescue analgesia bedside technique to be performed in the thoracic surgical ward, reporting a 7-patient case series. Methods: We report our experience in rescue analgesia after thoracic surgery. During the postoperative stay, numeric rating scale (NRS) score >3 and inability to perform physiotherapy or effective cough due to postoperative pain represented the criteria for proposing rescue analgesia with ESPB. NRS at rest and during movements was recorded; blood gas analysis and spirometry were performed to evaluate PaO2/FiO(2) (P/F), forced vital capacity (FVC), and forced expiratory volume in 1 second (FEV1) before ESPB execution. After performing the ESPB, static and dynamic NRS, P/F, and FVC and FEV1 were recorded at 40 minutes and 80 minutes. Results: NRS had a reduction at rest and in dynamic assessment. The P/F did not improve but spirometric measures improved. FVC had a relevant improvement only after 80 minutes; FEV1 was increased after 40 minutes. Conclusion: The use of ESPB as postoperative rescue analgesia can offer several advantages due to effective rescue analgesia and safety that makes it easy to perform in the thoracic surgical ward or in an outpatient clinic setting.