Abstract

Background

A single injection of local anaesthetic (LA) in the erector spinae plane block (ESPB) can reduce pain after modified radical mastectomy (MRM) surgery, but the duration of analgesia is affected by the duration of the LA. The aim of this study is to investigate the effect of continuous ESPB on acute and chronic pain and inflammatory response after MRM surgery.

Methods

In this prospective, randomised, controlled trial, we will recruit 160 patients, aged 18–80 years, scheduled for elective MRM surgery under general anaesthesia. They will be randomly assigned to two groups: a continuous ESPB group (group E) and a sham block group (group C). Both groups of patients will have a nerve block (group C pretended to puncture) and an indwelling catheter fixed prior to surgery. Electronic pumps containing LA are shielded. The primary outcome is the total consumption of analgesic agents. The secondary outcomes include the levels of inflammation-related cytokines; the occurrence of chronic pain (post-mastectomy pain syndrome, PMPS); static and dynamic pain scores at 2, 6, 12, 24 and 48 h postoperatively; and post-operative and post-puncture adverse reactions.

Discussion

Analgesia after MRM surgery is important and chronic pain can develop when acute pain is prolonged, but the analgesic effect of a nerve block with a single injection of LA is limited by the duration of drug action. The aim of this trial is to investigate whether continuous ESPB can reduce acute pain after MRM surgery and reduce the incidence of chronic pain (PMPS), with fewer postoperative analgesic drug-related complications and less inflammatory response. Continuous ESPB and up to 12 months of follow-up are two innovations of this trial.

Trial registration

Chinese Clinical Trial Registry (https://www.chictr.org.cn/) ChiCTR2200061935. Registered on 11 July 2022. This trial is a prospective registry with the following registry names: Effect of ultrasound-guided continuous erector spinae plane block on postoperative pain and inflammatory response in patients undergoing modified radical mastectomy for breast cancer.

Details

Title
Effect of ultrasound-guided continuous erector spinae plane block on postoperative pain and inflammatory response in patients undergoing modified radical mastectomy for breast cancer: study protocol for a randomised controlled trial
Author
Yu, Liang 1   VIAFID ORCID Logo  ; Shen, Xiao-Juan 2 ; Liu, He 1 ; Zhou, Yu-Ting 3 ; Zhang, Qin 1 ; Zhang, Zhen-Duo 1 ; Shen, Shu-Min 1 

1  Huzhou Central Hospital, The Fifth School of Clinical Medicine of Zhejiang Chinese Medical University, The Affiliated Huzhou Hospital, Zhejiang University School of Medicine, Affiliated Central Hospital, Huzhou University, Department of Anesthesiology, Huzhou, China 
2  Huzhou Central Hospital, The Fifth School of Clinical Medicine of Zhejiang Chinese Medical University, The Affiliated Huzhou Hospital, Zhejiang University School of Medicine, Affiliated Central Hospital, Huzhou University, Department of 706A Ward Nursing, Huzhou, China 
3  Huzhou Central Hospital, The Fifth School of Clinical Medicine of Zhejiang Chinese Medical University, The Affiliated Huzhou Hospital, Zhejiang University School of Medicine, Affiliated Central Hospital, Huzhou University, Department of Breast Surgery, Huzhou, China 
Pages
51
Publication year
2024
Publication date
Dec 2024
Publisher
Springer Nature B.V.
e-ISSN
17456215
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1186/s13063-023-07777-0
ProQuest document ID
2914965484
Copyright
© The Author(s) 2024. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.