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Intravenous Dexamethasone With Single-Shot Versus Continuous Brachial Plexus Block for Rebound Pain After Shoulder Surgery

2026年7月9日 更新者：Hansol Kim, MD、Seoul National University Hospital

Pain Management Protocol Optimization for Rebound Pain Prevention and Enhanced Recovery After Shoulder Surgery: A Randomized Noninferiority Trial of Intravenous Dexamethasone Combined With Single-Shot Versus Continuous Brachial Plexus Block

Shoulder surgery often causes severe pain after the operation. To control this pain, doctors commonly perform a nerve block (interscalene brachial plexus block), which numbs the shoulder area. However, when the effect of a single-injection nerve block wears off, many patients experience sudden, intense pain known as "rebound pain".

One way to prevent rebound pain is to place a thin catheter near the nerves so that local anesthetic can be given continuously for a longer period (continuous nerve block). However, this method is technically demanding and can cause problems such as catheter dislodgement, infection, and inconvenience for patients. Another simpler option is to give a single-injection nerve block together with an intravenous (IV) injection of dexamethasone, a steroid medication known to prolong the effect of nerve blocks and reduce rebound pain.

The purpose of this study is to determine whether a single-injection nerve block combined with IV dexamethasone (5 mg) is not inferior to a continuous nerve block in preventing rebound pain after shoulder surgery. A total of 92 adult patients scheduled for elective shoulder surgery will be randomly assigned to one of the two groups. The main outcome is the rebound pain score, defined as the difference between the last pain score recorded in the recovery room (while the nerve block is still working) and the highest pain score reported within the first 24 hours after the nerve block. The investigators expect that the simpler single-injection method with IV dexamethasone will provide comparable pain control while avoiding the complications and inconvenience of catheter-based continuous nerve blocks.

研究概览

地位

尚未招聘

条件

干预/治疗

研究类型

介入性

注册 (估计的)

92

阶段

  • 第四阶段

联系人和位置

本节提供了进行研究的人员的详细联系信息，以及有关进行该研究的地点的信息。

学习联系方式

研究联系人备份

  • 姓名：Hwan Suk Jang, M.D.
  • 电话号码：+82-2-2072-2467
  • 邮箱：j4n6h5@gmail.com

学习地点

  • 韩国
    • Jongno-gu
      • Seoul、Jongno-gu、韩国、03080
        • Seoul National University Hospital
        • 接触：
        • 接触：

参与标准

研究人员寻找符合特定描述的人，称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。

资格标准

适合学习的年龄

  • 成人
  • 年长者

接受健康志愿者

不

描述

Inclusion Criteria:

  • Adult patients aged 19 to 79 years scheduled for elective shoulder surgery under brachial plexus block and monitored anesthesia care (MAC)

Exclusion Criteria:

  • Pre-existing neurological deficit of the brachial plexus
  • Emergency surgery
  • American Society of Anesthesiologists (ASA) physical status classification IV or higher
  • Contraindication or history of hypersensitivity to local anesthetics or dexamethasone
  • Severe pulmonary disease (e.g., chronic obstructive pulmonary disease)
  • Body mass index (BMI) ≥ 35 kg/m²
  • Long-term use of steroids
  • Long-term use of analgesics
  • Inability to cooperate or communicate
  • Pregnancy

学习计划

本节提供研究计划的详细信息，包括研究的设计方式和研究的衡量标准。

研究是如何设计的？

设计细节

  • 主要用途：治疗
  • 分配：随机化
  • 介入模型：并行分配
  • 屏蔽：无（打开标签）

武器和干预

参与者组/臂
干预/治疗
实验性的：Single-shot block with IV dexamethasone
Participants receive a single-shot ultrasound-guided interscalene brachial plexus block with 0.75% ropivacaine 15-20 mL, followed by intravenous dexamethasone 5 mg administered after confirmation of successful block on arrival in the operating room. Postoperatively, an intravenous patient-controlled analgesia (PCA) pump with fentanyl (10 mcg/mL, bolus 1 mL, lockout 6 min, no basal rate) is connected. All participants receive standard multimodal analgesia (intravenous acetaminophen 1000 mg plus ibuprofen 300 mg every 8 hours).
药品：Dexamethasone (IV)
Intravenous dexamethasone 5 mg, administered as a single dose after confirmation of adequate sensory and motor block on arrival in the operating room.
程序：Single-shot interscalene brachial plexus block
Ultrasound-guided single-shot interscalene brachial plexus block performed with a 50 mm needle. 0.75% ropivacaine 15-20 mL is injected at the interscalene level. No perineural catheter is placed.
有源比较器：Continuous interscalene brachial plexus block
Participants receive an ultrasound-guided continuous interscalene brachial plexus block: 0.75% ropivacaine 15-20 mL is injected at the interscalene level, and a perineural catheter is placed with the tip adjacent to the superior trunk. Postoperatively, a nerve block PCA (0.2% ropivacaine, basal rate 5 mL/h, bolus 3 mL, lockout 30 min) is connected via the catheter. All participants receive the same standard multimodal analgesia as the experimental arm.
程序：Continuous interscalene brachial plexus block
Ultrasound-guided interscalene brachial plexus block with 0.75% ropivacaine 15-20 mL, followed by placement of a perineural catheter adjacent to the superior trunk. Continuous postoperative analgesia is provided through the catheter using 0.2% ropivacaine (basal rate 5 mL/h, bolus 3 mL, lockout time 30 min) via a patient-controlled analgesia pump.

研究衡量的是什么？

主要结果指标

结果测量
措施说明
大体时间
Rebound Pain Score (RPS)
大体时间：Within 24 hours after the nerve block
Difference between the last pain score recorded in the post-anesthesia care unit (PACU) while the nerve block is still effective and the highest pain score reported within the first 24 hours after the nerve block, measured on an 11-point Numerical Rating Scale (NRS; 0 = no pain, 10 = worst pain imaginable). Higher scores indicate more severe rebound pain. Non-inferiority margin: 1.5.
Within 24 hours after the nerve block

次要结果测量

结果测量
措施说明
大体时间
Postoperative pain score (NRS)
大体时间：4, 8, 12, 24, and 48 hours after surgery
Pain intensity at rest and during movement, measured on an 11-point NRS (0 = no pain, 10 = worst pain imaginable).
4, 8, 12, 24, and 48 hours after surgery
Peak NRS pain score
大体时间：0-24 hours and 24-48 hours after surgery
Highest pain score reported during each period, on an 11-point NRS.
0-24 hours and 24-48 hours after surgery
Incidence of severe rebound pain
大体时间：Within 24 hours after the nerve block
Proportion of participants experiencing rebound pain with NRS ≥ 7.
Within 24 hours after the nerve block
Block duration
大体时间：Up to 48 hours after the nerve block
Time from completion of the nerve block to the first onset of pain.
Up to 48 hours after the nerve block
Time to first rescue analgesic
大体时间：Up to 48 hours after surgery
Time from the end of surgery to the first administration of rescue analgesics.
Up to 48 hours after surgery
Cumulative opioid consumption
大体时间：24 and 48 hours after surgery
Cumulative opioid consumption converted to oral morphine equivalents (OME), including PCA use and rescue opioids.
24 and 48 hours after surgery
Block performance time
大体时间：During the block procedure (day of surgery)
Single-shot group: time from donning gloves to needle removal. Continuous group: time from donning gloves to completion of aseptic dressing.
During the block procedure (day of surgery)
Block failure rate
大体时间：From block completion to start of surgery (day of surgery)
Proportion of participants with inadequate sensory/motor block on arrival in the operating room requiring rescue block.
From block completion to start of surgery (day of surgery)
Rescue block administration
大体时间：Day of surgery
Proportion of participants requiring an additional rescue block (0.75% ropivacaine 5-10 mL).
Day of surgery
Intraoperative rescue analgesic use
大体时间：During surgery
Proportion of participants requiring intraoperative rescue analgesics (IV fentanyl 50-100 μg).
During surgery
Conversion to general anesthesia
大体时间：During surgery
Proportion of participants requiring conversion to general anesthesia due to inadequate block or uncontrolled pain.
During surgery
Intraoperative sedative consumption
大体时间：During surgery
Total dose of propofol administered for sedation during surgery.
During surgery
Quality of Recovery-15 Korean version (QoR-15K) score
大体时间：Baseline (day before surgery) and 24 hours after surgery
Quality of recovery assessed using the QoR-15K questionnaire (score range 0-150; higher scores indicate better recovery).
Baseline (day before surgery) and 24 hours after surgery
Incidence of postoperative nausea and vomiting (PONV)
大体时间：4, 8, 12, 24, and 48 hours after surgery
Proportion of participants experiencing PONV and requiring antiemetics.
4, 8, 12, 24, and 48 hours after surgery
Length of hospital stay
大体时间：From surgery to discharge, up to 30 days
Duration of hospitalization from surgery to discharge.
From surgery to discharge, up to 30 days
Patient satisfaction
大体时间：48 hours after surgery
Numerical rating scale satisfaction score. 0, not satisfied; 10, absolutely satisfied.
48 hours after surgery
Incidence of hemidiaphragmatic paralysis
大体时间：Within 24 hours after the nerve block
Proportion of participants with phrenic nerve palsy after the block.
Within 24 hours after the nerve block
Postoperative blood glucose change
大体时间：Postoperative day 1
Change in blood glucose level on postoperative day 1 compared with baseline.
Postoperative day 1
Incidence of surgical and anesthetic complications
大体时间：Up to 30 days after surgery
Surgical complications (surgical site infection, delayed wound healing) and anesthesia-related complications (nerve injury, local anesthetic systemic toxicity, catheter-related problems such as dislodgement, leakage, or infection).
Up to 30 days after surgery

合作者和调查者

在这里您可以找到参与这项研究的人员和组织。

赞助

Seoul National University Hospital

研究记录日期

这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查，以确保它们在发布到公共网站之前符合特定的质量控制标准。

研究主要日期

学习开始 (估计的)

2026年7月15日

初级完成 (估计的)

2027年6月15日

研究完成 (估计的)

2027年7月15日

研究注册日期

首次提交

2026年7月5日

首先提交符合 QC 标准的

2026年7月9日

首次发布 (实际的)

2026年7月13日

研究记录更新

最后更新发布 (实际的)

2026年7月13日

上次提交的符合 QC 标准的更新

2026年7月9日

最后验证

2026年7月1日

更多信息

与本研究相关的术语

关键字

其他相关的 MeSH 术语

其他研究编号

  • 2605-154-1749

计划个人参与者数据 (IPD)

计划共享个人参与者数据 (IPD)？

不

IPD 计划说明

Individual participant data will not be shared because the informed consent obtained from participants does not include provisions for data sharing with third parties.

药物和器械信息、研究文件

研究美国 FDA 监管的药品

不

研究美国 FDA 监管的设备产品

不

此信息直接从 clinicaltrials.gov 网站检索，没有任何更改。如果您有任何更改、删除或更新研究详细信息的请求，请联系 register@clinicaltrials.gov. clinicaltrials.gov 上实施更改，我们的网站上也会自动更新.

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