• Yang Zhang, Jia Min, and Shibiao Chen.
• Department of Anesthesiology, First Affiliated Hospital of Nanchang University, Jiangxi, China.
• J. Cardiothorac. Vasc. Anesth. 2021 Nov 1; 35 (11): 3288-3293.

ObjectivesPatients undergoing subcutaneous implantable cardioverter-defibrillator (S-ICD) placement usually experience substantial perioperative pain. The aim of the present study was to investigate the effect of transversus thoracic muscle plane block combined with serratus anterior plane block in patients undergoing S-ICD placement.DesignDouble-blind, randomized controlled study.SettingFirst Affiliated Hospital of Nanchang University.ParticipantsPatients aged 18-to-80 years who underwent new S-ICD placement.InterventionsA group of 80 patients randomly were allocated to either the regional group (R group) or local group (L group).Measurements And Main ResultsThe primary endpoint was pain during S-ICD placement. The secondary outcome measures included pain intensity at rest and after movement one, three, six, 12, 24, and 48 hours after surgery; the dose of dexmedetomidine and remifentanil during surgery; 24-hour ketorolac administration; postoperative sufentanil dosage; the total duration of hospitalization; intraoperative sedation; and the incidence of hypoxemia. Mean Critical-Care Pain Observation Tool scores were significantly higher during pocket creation, lead tunneling A, and lead tunneling B in the L group compared with the R group. The R group required significantly less intraoperative dexmedetomidine, intraoperative remifentanil, postoperative sufentanil, and ketorolac consumption. Compared with the R group, the L group had higher Numerical Rating Scale pain scores at 24 hours after surgery both at rest and after movement. The intraoperative Ramsay score and the incidence of hypoxemia were significantly higher in the L group compared with the R group.ConclusionsUltrasound-guided transversus thoracic muscle plane block and serratus anterior plane block resulted in lower intraoperative Critical-Care Pain Observation Tool scores and the need for less adjunctive pain medication and sedation compared with local anesthesia in patients undergoing S-ICD placement.Copyright © 2021 Elsevier Inc. All rights reserved.

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