A Prospective, Randomized, Active-Comparator, Open-Label, Non-Inferiority Study of the Efficacy of Continuous Nerve Block vs Single Block Plus Intravenous Lidocaine for Postoperative Pain.
试验速览
- 阶段
- 4 期
- 状态
- 终止
- 发起方
- 入组人数
- 17
- 试验地点
- 1
- 主要终点
- Opioid Consumption After Surgery
研究概览
简要总结
A multimodal analgesic regimen including regional anesthesia is used at UPMC Shadyside for primary thoracic and major abdominal surgeries. The current standard-of-care regional anesthesia techniques include Erector Spinae Plane (ESP) block for video assisted thorascopic surgery (VATS) and Quadratus Lumborum (QL) block for major abdominal surgery. These blocks are routinely administered as a continuous catheter technique in order to extend the duration of postoperative analgesia. Although rare, continuous nerve block techniques carry risks and limitations, including catheter dislodgement, migration, kinking and leaking at the site, bleeding, and infection. They are also much more expensive to perform and maintain than single-injection nerve blocks at this institution. Perioperative intravenous (IV) lidocaine is one of the safest local anesthetics, and its use has been shown to provide analgesia and reduce opioid requirements. Furthermore, it has been hypothesized that part of the analgesic efficacy of continuous peripheral nerve blocks may be due to the systemic effects of the local anesthetic infused at the site. Therefore, it is possible that the combination of a single block followed by an infusion of IV lidocaine may provide the same benefits as a continuous nerve block at a lower cost. The purpose of this study is to show that a single block technique plus IV lidocaine is non-inferior to a continuous block technique. For the purpose of this study we chose two surgical models--VATS and major abdominal surgery--and ESP and QL blocks, respectively. The study will be conducted as a prospective, randomized (1:1), open-label, active-comparator, noninferiority trial. The study will prospectively investigate the efficacy of continuous block versus single block plus IV lidocaine infusion for postoperative pain management in patients undergoing primary unilateral VATS or primary major abdominal surgery.
详细描述
After obtaining a signed informed consent, participating patients will be randomized by computer generated random numbers to either the control group to receive continuous Erector Spinae Plane block (in the case of thoracic surgery) or continuous Quadratus Lumborum block (in the case of abdominal surgery), or the treatment group to receive single shot Erector Spinae Plane block (in the case of thoracic surgery) or single shot Quadratus Lumborum block (in the case of abdominal surgery) with postoperative intravenous lidocaine infusion. Subjects will be randomized in a 1:1 ratio. Randomization will take place via an opaque envelope containing the treatment group allocation that will be given to the anesthesiologist performing the block after informed consent is signed. Procedures will take place in the UPMC Shadyside pre-operative block area. The expected duration of nerve block procedures is 10-20 minutes.
If the patient is randomized to the continuous nerve block group and is undergoing thoracic surgery, an anesthesiologist on the Acute Interventional Perioperative Pain Service (AIPPS) will administer the block with this approach:
Continuous ESP Block Approach: The patient will be positioned in seated position with side or sides to be blocked marked. The T5 spinous process will be identified by palpation starting with C7 and continuing caudad. C7 is the most prominent spinous process anatomically. The T5 spinous process will be marked with a marking pen. The block area will be cleaned using 2% chlorhexidine solution. The entire block procedure is performed under strict aseptic technique. An ultrasound probe covered in a sterile probe cover will be placed at the T5 spinous process in a cephalad to caudad orientation and moved lateral until the T5 transverse process is identified. 1-2ml of 1% lidocaine will be administered just above the ultrasound probe for local skin infiltration. An 18 gauge Tuohy needle will then be inserted in plane in a cephalad to caudad direction under ultrasound visualization until the tip of the needle touches the T5 transverse process. The T5 transverse process is the anatomical target for this block. 20ml of 0.5% ropivacaine will then be injected using slow fractionated injection, aspirating every 5ml to ensure the needle tip is not intravascular. Local anesthetic spread in the appropriate plane will be confirmed with ultrasound. Once injection is complete, a 20 gauge nonstimulating catheter will be inserted through the Tuohy needle. Catheter tip placement will be confirmed with ultrasound. If bilateral blocks are to be performed, the procedure will then be repeated on the contralateral side. Upon patient arrival to PACU, a continuous infusion of 0.25% lidocaine at 10ml/hr per side blocked via ESP catheter will be initiated and continued for 72 hours or until 12 hours prior to patient discharge.
If the patient is randomized to the continuous nerve block group and is undergoing abdominal surgery, an anesthesiologist on the Acute Interventional Perioperative Pain Service (AIPPS) will administer the block with this approach:
Continuous QL Block Approach: The patient will be positioned in lateral decubitus position with the side to be blocked facing up and the side or sides to be blocked marked. The block area will be cleaned using 2% chlorhexidine solution. The entire block procedure is performed under strict aseptic technique. An ultrasound probe covered in a sterile probe cover will be placed transversally between the iliac crest and the costal margin at the level of the anterior axillary line and the three muscles of the anterolateral abdominal wall (external oblique, internal oblique and transversus abdominis) will be identified. The probe will then be moved posteriorly until the transversus abdominis muscle (TAM) tapers off into its aponeurosis approximately at the level of the posterior axillary line, and posteriorly to this the intersection of the transversalis fascia with the lateral side of the QL muscle will be identified. An 18 gauge Tuohy needle will then be inserted in plane in an anterior to posterior direction until the tip of the needle is visualized at the intersection of the transversalis fascia with the lateral side of the QL muscle. The intersection of the transversalis fascia with the lateral side of the QL muscle is the anatomical target for this block. Once the initial injection of local anesthetic is complete, a 20 gauge nonstimulating catheter will be inserted through the Tuohy needle. Catheter tip placement will be confirmed with ultrasound. If bilateral blocks are to be performed, the patient will be repositioned, the area to be blocked will be cleaned and prepared in a strict aseptic fashion as described above, and the procedure will then be repeated on the contralateral side. Upon patient arrival to PACU, a continuous infusion of 0.25% Lidocaine at 10ml/hr per side blocked via QLB catheter will be initiated and continued for 72 hours or until 12 hours prior to patient discharge.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Single (Outcomes Assessor)
盲法说明
For study participants, the investigator placing the block will record in the narrative that "this patient is a study participant and received Paravertebral block with ESP approach" or "this patient is a study participant and received TAP block with QL approach". By documenting blocks in this way, the research team member collecting the data will be blinded to whether the patient received continuous block with 0.5% ropivacaine, or single block with 0.5% ropivacaine, dexamethasone, and dexmedetomidine.
入排标准
- 年龄范围
- 18 Years 至 90 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •18-90 years old
- •Primary unilateral VATS or major abdominal surgery
- •BMI 20-36, weight ≥ 50kg
- •Male and Female
- •All races
排除标准
- •Patient refusal
- •Inpatient status at the time of surgery
- •ASA class 4 or greater
- •Pregnancy
- •Non-English speaking or inability to participate in the study
- •Patients with coagulopathy or on therapeutic anticoagulation
- •Chronic steroid use
- •Opioid use disorder
- •Contraindication to performing any of the proposed blocks - active infection at the block site, systemic infection, allergy to local anesthetic medications
- •Patients undergoing second surgery or urgent/emergent surgery
- •Patients weighing < 50kg
- •History of chronic pain and/or opioid tolerant
- •Anticipated requirement for patient-controlled analgesia (PCA)
- •Allergy or intolerance to any medication specified in the study protocol or postoperative pain management regimen
- •Liver disease
研究组 & 干预措施
Continuous nerve blocks
A total of 30 subjects equally distributed to either continuous Erector Spinae Plane block for unilateral thoracic surgery , or continuous Quadratus Lumborum block for major abdominal surgery. Patients in this group will receive 20ml 0.5% ropivacaine per block performed after positioning of the needle followed by continuous perineural infusion of 0.25% lidocaine (10ml/hr) beginning in the post-anesthesia care unit (PACU) and continued for 72 hours or until 12 hours prior to patient discharge, whichever comes first, which is standard of care at this institution.
干预措施: Continuous Erector Spinae Plane Nerve Block (Procedure)
Continuous nerve blocks
A total of 30 subjects equally distributed to either continuous Erector Spinae Plane block for unilateral thoracic surgery , or continuous Quadratus Lumborum block for major abdominal surgery. Patients in this group will receive 20ml 0.5% ropivacaine per block performed after positioning of the needle followed by continuous perineural infusion of 0.25% lidocaine (10ml/hr) beginning in the post-anesthesia care unit (PACU) and continued for 72 hours or until 12 hours prior to patient discharge, whichever comes first, which is standard of care at this institution.
干预措施: Continuous Quadratus Lumborum Nerve Block (Procedure)
Continuous nerve blocks
A total of 30 subjects equally distributed to either continuous Erector Spinae Plane block for unilateral thoracic surgery , or continuous Quadratus Lumborum block for major abdominal surgery. Patients in this group will receive 20ml 0.5% ropivacaine per block performed after positioning of the needle followed by continuous perineural infusion of 0.25% lidocaine (10ml/hr) beginning in the post-anesthesia care unit (PACU) and continued for 72 hours or until 12 hours prior to patient discharge, whichever comes first, which is standard of care at this institution.
干预措施: Ropivacaine 0.5% Injectable Solution (Drug)
Continuous nerve blocks
A total of 30 subjects equally distributed to either continuous Erector Spinae Plane block for unilateral thoracic surgery , or continuous Quadratus Lumborum block for major abdominal surgery. Patients in this group will receive 20ml 0.5% ropivacaine per block performed after positioning of the needle followed by continuous perineural infusion of 0.25% lidocaine (10ml/hr) beginning in the post-anesthesia care unit (PACU) and continued for 72 hours or until 12 hours prior to patient discharge, whichever comes first, which is standard of care at this institution.
干预措施: Lidocaine (Drug)
Single nerve blocks plus IV lidocaine infusion
A total of 30 subjects equally distributed to either Erector Spinae Plane block for unilateral thoracic surgery, or Quadratus Lumborum block for major abdominal surgery, will be included . Patients in this group will receive 20ml 0.5% ropivacaine, 4mg dexamethasone, and 20mcg dexmedetomidine (30mcg if only one block is performed) per block after proper positioning of the Tuohy needle. Upon patient arrival in the recovery room a continuous infusion of IV lidocaine 50 mg /hr will be started and continued for 72 hours or until 12 hours prior to patient discharge, whichever comes first, which is standard of care at this institution.
干预措施: Single Erector Spinae Plane Nerve Block (Procedure)
Single nerve blocks plus IV lidocaine infusion
A total of 30 subjects equally distributed to either Erector Spinae Plane block for unilateral thoracic surgery, or Quadratus Lumborum block for major abdominal surgery, will be included . Patients in this group will receive 20ml 0.5% ropivacaine, 4mg dexamethasone, and 20mcg dexmedetomidine (30mcg if only one block is performed) per block after proper positioning of the Tuohy needle. Upon patient arrival in the recovery room a continuous infusion of IV lidocaine 50 mg /hr will be started and continued for 72 hours or until 12 hours prior to patient discharge, whichever comes first, which is standard of care at this institution.
干预措施: Single Quadratus Lumborum Nerve Block (Procedure)
Single nerve blocks plus IV lidocaine infusion
A total of 30 subjects equally distributed to either Erector Spinae Plane block for unilateral thoracic surgery, or Quadratus Lumborum block for major abdominal surgery, will be included . Patients in this group will receive 20ml 0.5% ropivacaine, 4mg dexamethasone, and 20mcg dexmedetomidine (30mcg if only one block is performed) per block after proper positioning of the Tuohy needle. Upon patient arrival in the recovery room a continuous infusion of IV lidocaine 50 mg /hr will be started and continued for 72 hours or until 12 hours prior to patient discharge, whichever comes first, which is standard of care at this institution.
干预措施: Lidocaine IV (Drug)
Single nerve blocks plus IV lidocaine infusion
A total of 30 subjects equally distributed to either Erector Spinae Plane block for unilateral thoracic surgery, or Quadratus Lumborum block for major abdominal surgery, will be included . Patients in this group will receive 20ml 0.5% ropivacaine, 4mg dexamethasone, and 20mcg dexmedetomidine (30mcg if only one block is performed) per block after proper positioning of the Tuohy needle. Upon patient arrival in the recovery room a continuous infusion of IV lidocaine 50 mg /hr will be started and continued for 72 hours or until 12 hours prior to patient discharge, whichever comes first, which is standard of care at this institution.
干预措施: Ropivacaine 0.5% Injectable Solution (Drug)
Single nerve blocks plus IV lidocaine infusion
A total of 30 subjects equally distributed to either Erector Spinae Plane block for unilateral thoracic surgery, or Quadratus Lumborum block for major abdominal surgery, will be included . Patients in this group will receive 20ml 0.5% ropivacaine, 4mg dexamethasone, and 20mcg dexmedetomidine (30mcg if only one block is performed) per block after proper positioning of the Tuohy needle. Upon patient arrival in the recovery room a continuous infusion of IV lidocaine 50 mg /hr will be started and continued for 72 hours or until 12 hours prior to patient discharge, whichever comes first, which is standard of care at this institution.
干预措施: Dexamethasone (Drug)
Single nerve blocks plus IV lidocaine infusion
A total of 30 subjects equally distributed to either Erector Spinae Plane block for unilateral thoracic surgery, or Quadratus Lumborum block for major abdominal surgery, will be included . Patients in this group will receive 20ml 0.5% ropivacaine, 4mg dexamethasone, and 20mcg dexmedetomidine (30mcg if only one block is performed) per block after proper positioning of the Tuohy needle. Upon patient arrival in the recovery room a continuous infusion of IV lidocaine 50 mg /hr will be started and continued for 72 hours or until 12 hours prior to patient discharge, whichever comes first, which is standard of care at this institution.
干预措施: Dexmedetomidine (Drug)
结局指标
主要结局
Opioid Consumption After Surgery
时间窗: 24 hours after surgery
Opioids will be converted to oral morphine equivalents
次要结局
- Pain After Surgery(72 hours after surgery)
- Opioid Consumption After Surgery(72 hours after surgery)
- Local Anesthetic Consumption After Surgery(72 hours after surgery)
- Total Hospital Length of Stay(From admission to discharge, on average 1-4 days)
- Serum Lidocaine Level(72 hours after surgery)
- Incidence of Adverse Events(From time of surgery to discharge, on average 1-4 days)
研究者
Jeremy Kearns
Clinical Assistant Professor
University of Pittsburgh