Postoperative Analgesic Efficacy of Thoracic Paravertebral Block and Erector Spinae Plane Block Combination in Video-Assisted Thoracic Surgery

Background The combination of a thoracic paravertebral block (TPVB) and erector spinae plane block (ESPB) has not been investigated. We aimed to evaluate the effects of the combination of TPVB and ESPB particularly on postoperative pain scores in patients undergoing video-assisted thoracic surgery (VATS). Methods From January 1, 2021, to March 1, 2021, 13 patients older than 18 years who underwent combined ESPB and TPVB for analgesic treatment after elective VATS were included in the study. Standard anesthesia induction was performed for all patients, and the block was performed in the lateral decubitis position before surgery. Using the in-plane technique, an ultrasound (US)-compatible 22-gauge, 8-mm nerve block needle was introduced 2-3 cm lateral to the spinous process of the T6 vertebra and advanced in the caudocranial direction. Fifteen (15) ml of 0.25% bupivacaine was administered and pleural depression was observed. The same needle was withdrawn from the paravertebral space and advanced into the interfascial plane above the transverse process and below the erector spinae muscle at the T5 level. Then, 15 ml of 0.25% bupivacaine was injected. Results The combination of TPVB and ESPB was performed in 13 patients. The mean age was 44.3 (21-68) years. The mean body mass index (BMI) was 23.21 (16.9-35.9) kg/m(2). Postoperative 24 hours morphine consumption was 24.5 (16-42) mg. In three cases, visual analog scale (VAS) scores at rest were ≥4; therefore, tramadol (25 mg, IV) was given as an additional analgesic. Nausea and vomiting were observed in only one case in the early postoperative period. Conclusıons As a new technique, the combination of TPVB and ESPB in this preliminary study provided effective postoperative pain management along with the use of morphine in acceptable quantities. Large-scale, randomized-controlled, and comparative studies are needed to demonstrate the efficacy of the combination of TPVB and ESPB.