Erector Spinae Plane Block Versus Rectus Sheath Block for Postoperative Analgesia After Supraumbilical Surgery

Study Overview
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Brief Summary
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Objectives: To compare the effectiveness of erector spinae plane block (ESPB) and rectus sheath block (RSB) in providing postoperative analgesia after supraumbilical surgery in adult patients and their impact on the patient's outcomes. Background: Supraumbilical surgery for hernia repair is the second-most-popular after surgical inguinal hernia repair and is accompanied by moderate to severe postoperative pain, so patients always require large doses of opioids within the first postoperative day. Because opioids have several adverse effects such as drowsiness, pruritus, nausea, and vomiting, regional analgesic techniques are an essential component of postoperative opioid-sparing analgesia. Previous studies have shown that regional analgesic techniques after abdominal wall surgeries can be an essential element of a postoperative pain management strategy with minimal adverse effects and hemodynamic responses. ESPB provides both somatic and visceral analgesia to the abdominal wall, through the blockade of the anterior rami of spinal nerves and the rami communicants involving sympathetic nerve fibers. RSB provides analgesia to the anterior abdominal wall from the xiphoid process to the symphysis pubis, through the blockade of the anterior rami of the 7th to 12th intercostal nerves. The dermatomal distribution of ESPB and RSB makes them ideal regional analgesic techniques after abdominal surgery, and to our knowledge, there were no previous trials that studied the difference between them. Patients and Methods: This was a prospective, randomized (1:1), double-blind clinical trial; carried out on 60 patients scheduled for elective supraumbilical surgery under general anesthesia at our hospital. Patients will be randomly allocated into two equal groups (30 patients each) and will receive: in group E; general anesthesia with postoperative bilateral ultrasound-guided ESPB, whereas in group R; general anesthesia with postoperative bilateral ultrasound-guided RSB.

Official Title
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Is Erector Spinae Plane Block More Effective Than Rectus Sheath Block for Postoperative Analgesia After Supraumbilical Surgery in Adult Patients

Conditions
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Post Operative Pain

Intervention / Treatment
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* Procedure: Erector Spinae Plane Block (ESPB)
* Procedure: Rectus Sheath Block (RSB)


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: American Society of Anesthesiologist (ASA) physical status ≤ II Age from 21 to 60 years Body Mass Index (BMI) < 35 kg/m² Exclusion Criteria: American Society of Anesthesiologists (ASA) physical status > II Age < 21 years or > 60 years Body Mass Index (BMI) ≥ 35 Local infection at the puncture site Altered mental status Pregnant women Allergy to study drugs Chronic pain Coagulation abnormalities or on anticoagulants Severe hepatic or kidney disease

Ages Eligible for Study
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Minimum Age: 21 Years
Maximum Age: 60 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Prevention
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: Group E (n=30)<br>Erector Spinae Plane Block | Procedure: Erector Spinae Plane Block (ESPB)<br>* Postoperative Bilateral Ultrasound-guided ESPB<br>|
| Active Comparator: Group R (n=30)<br>Rectus Sheath Block | Procedure: Rectus Sheath Block (RSB)<br>* Postoperative Bilateral Ultrasound-guided RSB<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Mean and Standard deviation of time to the first request of postoperative rescue analgesic (minutes) (mean±SD) | The time interval between the block performance and the first request of postoperative analgesia | 24 hours after block performance | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Mean and Standard deviation of Numeric Pain Rating Scale (NPRS) score (mean±SD) | NPRS measures the severity of postoperative pain, it is a 11 point scale from 0-10; where 0=No pain and 10=Worst possible pain (30 minutes, 1h, 6h, 12h, 18h, 24h) after block performance | 24 hours after block performance | 
| Mean and Standard deviation of the total dose of the rescue analgesic consumed (milligrams) (mean±SD) | The total dose of the rescue analgesic consumed in the first 24 hours after block performance | 24 hours after block performance | 
| Number of participants and Rate of Postoperative Complications | Number of participants and Rate of: Nausea, Vomiting, Hematoma formation, Bowel perforation, and Pneumothorax | 24 hours after block performance | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Erector Spinae Plane Block, Rectus Sheath Block, Regional Analgesia