Mansour Mohamed A, Fouad Ahmed Z, Amin Sarah M, Dobal Nasser M
Department of Anesthesia, Intensive Care and Pain Management, Kasr Al Ainy Faculty of Medicine, Cairo University, Cairo, Egypt.
Local Reg Anesth. 2020 Aug 11;13:85-93. doi: 10.2147/LRA.S262138. eCollection 2020.
To assess the efficacy and safety of a modified technique for ultrasound-guided pectoral II block for postoperative pain control after mastectomy.
In this randomized controlled trial, patients were randomly allocated into two groups (40 patients each). Group I patients were subjected to ultrasound-guided pectoral II block with injection of 10 mL lidocaine 1% as a dissecting solution before attempting catheter insertion, while group II patients underwent the standard procedure without a dissecting solution. Measured outcomes included catheter visibility, pain, patient satisfaction, performance time, and complications.
Compared with group II, group I had significantly lower median catheter-visibility scores, shorter block performance time, and fewer insertion attempts. Group I had a nonsignificantly higher rate of complications than group II.
The modified technique facilitated the procedure, shortened the catheter-insertion time, and showed higher patient satisfaction. However, it was associated with lower catheter visibility on ultrasonography. Further studies are required to confirm the present findings and assess the safety of the modified technique.
评估改良超声引导下胸小肌阻滞技术用于乳房切除术后疼痛控制的有效性和安全性。
在这项随机对照试验中，患者被随机分为两组（每组40例）。第一组患者在尝试插入导管前，先接受超声引导下胸小肌阻滞，并注射10 mL 1%利多卡因作为解剖液，而第二组患者接受无解剖液的标准操作。测量的结果包括导管可视性、疼痛、患者满意度、操作时间和并发症。
与第二组相比，第一组的导管可视性中位数得分显著更低，阻滞操作时间更短，插入尝试次数更少。第一组的并发症发生率略高于第二组，但无显著差异。
改良技术简化了操作过程，缩短了导管插入时间，并显示出更高的患者满意度。然而，超声检查显示其导管可视性较低。需要进一步研究来证实目前的发现并评估改良技术的安全性。
