Erector Spinae Block Versus Shoulder Periarticular Anesthetic Infiltration for Arthroscopic Shoulder Surgery

NCT ID: NCT03691922

Last Updated: 2021-02-24

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 62 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2019-07-06
• Study Completion Date: 2021-02-01

Brief Summary

Arthroscopic shoulder surgery is a common and minimally invasive procedure utilized for different shoulder pathologies, but it is often associated with moderate to severe postoperative pain that may interfere with patients' well-being and course of recovery. By using an effective analgesic technique with few side effects, a patient may experience less pain after surgery, have a shortened hospital stay, and endure less nausea, vomiting, or excessive drowsiness that are associated with the use of opioids to manage postoperative pain. Periarticular infiltration (PAI) with local anesthetic (LA) has been used for shoulder surgery pain management, but the more effective interscalene nerve block (ISNB) is the current gold standard analgesic modality despite risk of significant side effects including diaphragm paralysis and rebound pain. In this study, the investigators want to look at the effectiveness and safety profile of a novel technique for pain management after shoulder surgery that has the potential to provide successful pain relief with minimal risk of side effects. Half of the patients will be randomly selected to receive the novel nerve block called the Erector Spinae Plane (ESP) block while the other half will receive a more standard PAI of local anesthetic to numb the shoulder. Patients' pain intensity and opioid consumption in the post-anesthesia care unit (PACU) as well as during the first 24 hours after surgery will be evaluated. Any complications from the interventions will also be noted. The investigators predict that the ESP block will provide superior analgesia compared to PAI for these shoulder arthroscopy patients.

Detailed Description

The use of opioids to manage immediate postoperative pain is frequently associated with nausea, vomiting, respiratory depression, hormonal effects and dysphoria. As such, achieving pain control while minimizing opioid use is critical, since more than 60% of unplanned prolonged hospitalizations and hospital readmissions are thought to be related to inadequate pain control or to side effects of opioids. A number of techniques have been used to achieve good pain control after arthroscopic shoulder surgery, including periarticular infiltration (PAI) with local anesthetic (LA) and regional anesthetic nerve blocks. Although PAI in the shoulder has been shown to decrease shoulder pain and opioid consumption, it is not as effective as regional blocks such as the interscalene nerve block (ISNB), which is the current gold standard. Nevertheless, the ISNB is potentially associated with significant side effects including persistent neurologic complications, rebound pain, phrenic nerve palsy, respiratory distress, cardiac arrest pneumothorax and central nerve toxicity. In view of this, investigating alternate regional blocks having the potential for good pain relief with minimal side effects is important. The Erector Spinae Plane (ESP) block can be considered as a modification of thoracic paravertebral block (PVB) that blocks thoracic spinal nerves using injections outside of the conventional paravertebral space. It is performed under ultrasound (US) by injecting local anesthetic deep to the erector spinae muscle at the interfascial space between either the erector spinae muscle and the rhomboid major muscle (higher up), or between the erector spinae muscle and the external intercostal muscles, at lower sites. Cadaveric studies of ultrasound-guided ESP blocks with methylene blue dye and subsequent dissection, as well an ESP block with a dye mixture and CT scanning demonstrated that when injecting deep into the erector spinae, the block likely affects the ventral and dorsal rami leading to the sensory blockade. The advantages include its simplicity and safety by limiting the risk of nerve damage and pneumothorax. Various case reports have demonstrated the ESP block to be successful for abdominal, breast and axillary, and other surgery types, and a recent case report described the successful management of chronic shoulder pain without motor blockade, with ESP performed at T3 level. The investigators conducted a systematic review via Pubmed to identify studies that have utilized ESP for post-surgical shoulder pain. Out of 77 reports, the investigators did not identify any comparative studies looking at the potential of ESP for shoulder surgery pain. The investigators also looked into ongoing and proposed trials of ESP by looking into clinicaltrials.gov. The investigators identified 21 studies including some randomized controlled trials (RCT) for thoracic surgery and general surgery population, but none for shoulder surgeries. Given the importance of providing adequate analgesia for arthroscopic shoulder surgery and lack of consensus amongst surgeons and anesthesiologists for the optimal analgesic technique, this trial will help establish the effectiveness of the ESP block in pain control after shoulder arthroscopy and define its safety profile. The results of this trial will allow the clinician to inform patients accurately regarding the benefits and risks of the block and thus guide the clinical practice of this block for shoulder arthroscopy. If proven to be effective, it may be used as an alternative to ISNB, especially in cases where ISNB is contraindicated.

Conditions

Arthroscopic Shoulder Surgery

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: SUPPORTIVE_CARE
• Blinding Strategy: QUADRUPLE

Study Groups

ESP Block

Preoperative US guided active Erector Spinae Plane (ESP) block and a saline PAI

Group Type: ACTIVE_COMPARATOR

Erector Spinae Plane (ESP) Block

Intervention Type: PROCEDURE

1. Preoperative US guided ESP blockade using 30 mL of 0.25% bupivacaine with 5 mcg/mL of epinephrine, injected in 5-mL aliquots through the needle (maximum of 3 mg/kg)

2. PAI of 30 mL of saline at the end of the surgical procedure on the operated side rotator cuff, injected in 5-mL aliquots through the needle

PAI with LA

Preoperative US guided ESP blockade with saline and an active Periarticular Infiltration (PAI)

Group Type: OTHER

Periarticular Infiltration (PAI)

Intervention Type: PROCEDURE

1. Preoperative US guided ESP blockade using 30 mL of saline, injected in 5-mL aliquots through the needle

2. PAI of 30 mL of 0.25% bupivacaine with 5 mcg/mL of epinephrine at the end of the surgical procedure on the operated side rotator cuff, injected in 5-mL aliquots through the needle

Interventions

Erector Spinae Plane (ESP) Block

1. Preoperative US guided ESP blockade using 30 mL of 0.25% bupivacaine with 5 mcg/mL of epinephrine, injected in 5-mL aliquots through the needle (maximum of 3 mg/kg)

2. PAI of 30 mL of saline at the end of the surgical procedure on the operated side rotator cuff, injected in 5-mL aliquots through the needle

Intervention Type: PROCEDURE

Periarticular Infiltration (PAI)

1. Preoperative US guided ESP blockade using 30 mL of saline, injected in 5-mL aliquots through the needle

2. PAI of 30 mL of 0.25% bupivacaine with 5 mcg/mL of epinephrine at the end of the surgical procedure on the operated side rotator cuff, injected in 5-mL aliquots through the needle

Intervention Type: PROCEDURE

Other Intervention Names

0.25% bupivacaine with 5 mcg/mL of epinephrine & PAI with 30 mL of saline; ESP block with 30 mL of saline & PAI with 30 mL of 0.25% bupivacaine with 5 mcg/mL of epinephrine

Eligibility Criteria

Inclusion Criteria

• elective arthroscopic shoulder joint surgeries admitted for day surgical procedure
• an ability to provide informed consent

Exclusion Criteria

• not willing
• contraindications to spinal injections as per the American Society of Regional Anesthesia and Pain (ASRA) guidelines
• known allergy to LA
• allergy to all opioid medications
• diagnostic shoulder arthroscopic procedures
• inability to understand or comprehend in English language
• history of daily opioid medication use for the last one month
• patients with planned overnight hospital stay

• Minimum Eligible Age: 18 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

McMaster University

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Harsha Shanthanna, MD

Role: PRINCIPAL_INVESTIGATOR

St. Joseph's Healthcare Hamilton/McMaster University

Bashar Alolabi, MD

Role: PRINCIPAL_INVESTIGATOR

St. Joseph's Healthcare Hamilton

Mark Czuczman, MD

Role: PRINCIPAL_INVESTIGATOR

McMaster University

Locations

St. Joseph's Healthcare Hamilton

Hamilton, Ontario, Canada

Countries

Canada

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Other Identifiers

4668

Identifier Type: -

Identifier Source: org_study_id