Erector Spinae Plane Block Versus Quadratus Lumborum Block for Open Renal Surgeries in Children

Summary

Open renal surgeries are associated with significant postoperative pain; early control of the perioperative pain is associated with decrease of hemodynamic variations during the surgery, early mobilization, better quality of functional recovery \& early discharge of patients. Side effects of systemic opioids, as well as difficulty to monitor their response, are major limitations to their use.

Pediatric regional anesthesia (PRA) is one of the most valuable and safe tools to treat perioperative pain, and is an essential part of modern anesthetic practice. Neuraxial analgesia for pediatric patients is a mode of pain control that gained popularity in the last few decades as it decreases opioid exposure, shortens recovery room time \& hospital stay. Caudal block is the most commonly used neuraxial anesthesia in pediatric patients. However, its major side effect is urinary retention and excessive motor block.

Considerable progress has been made in the practice of PRA over the past few years including incorporation of ultrasound guidance, with promising novel regional anesthesia techniques, especially the anterolateral and the posterolateral trunk blocks.

In this study, the investigators will compare the ultrasound guided quadratus lumborum block (QLB) with erector spinae plane block (ESPB), regarding the duration and quality of postoperative analgesia in pediatric patients undergoing unilateral open renal surgeries under general anesthesia. The study hypothesis is that QLB can provide a more superior postoperative pain relief to ESPB in children undergoing open renal surgeries.

Conditions

• Postoperative Pain, Acute

Interventions

PROCEDURE

Ultrasound-guided Erector Spinae Plane Block

Using a 22-gauge 80 mm echogenic needle under ultrasound guidance, 0.5 mL/kg of bupivacaine 0.125% will be injected in the fascial plane deep to erector spinae muscle after confirming correct needle location by a negative aspiration test then by injecting 0.5-1 ml saline and observing the fluid lifting the erector spinae muscle off the transverse process (hydrodissection). The ultrasound probe will be placed 2-3 cm lateral to the spinous process on a parasagittal plane, to visualize the erector spinae muscle and transverse process, directing the needle craniocaudally using the in-plane technique. The spread of the injectate will be observed to distribute within this plane.

PROCEDURE

Ultrasound-guided Quadratus Lumborum Block

Using a 22-gauge 80 mm echogenic needle under ultrasound guidance, 0.5 mL/kg of bupivacaine 0.125% will be injected in the fascial plane between the quadratus lumborum and psoas major muscle after confirming correct needle location by a negative aspiration test then by injecting 0.5-1 ml saline (hydrodissection). The ultrasound probe will be placed 2-3 cm lateral to the L2 spinous process on an axial plane, to visualize the transverse process with psoas major muscle anterior, quadratus lumborum muscle lateral and erector spinae muscle posterior to it. The needle is inserted from the medial side of the probe and advanced laterally using the in-plane technique. The spread of the injectate will be observed to distribute within the target plane.

DEVICE

Ultrasound Machine

Sonosite S-Nerve (USA) with a linear multi-frequency 6-13 MHz (hockey stick) transducer

DEVICE

Echogenic needle

A 22-gauge 80 mm needle the sonoplex needle manufactured by PAJUNK (USA)

DRUG

Fentanyl

Given intravenously (1 µg/kg) as part of induction of general anesthesia (GA) added to propofol 2 mg/kg and atracurium 0.5 mg/kg Intraoperatively, intravenous fentanyl 0.5 µg/kg (with a maximum dose of 2 µg/kg) will be administered in response to any increase in hemodynamics by more than 20% of baseline values in response to skin incision or there after throughout surgery (after exclusion of other causes of hemodynamic changes)

DRUG

Pethidine

Will be given intravenously as a rescue analgesic (0.5 mg/kg with maximal dose 1.5 mg/kg) in both study groups if Children's Hospital Eastern Ontario Pain Scale (CHEOPS) more than 6. Quality of postoperative analgesia will be assessed using CHEOPS pain score at time transfer to PACU, 15, 30 minutes then 1, 2, 4, 6 hours postoperatively.

Sponsors & Collaborators

• Cairo University

  lead OTHER

Principal Investigators

• Nevine M Gouda · Cairo University

• Sherif M Soaida · Cairo University

• Ismail S Hammad · Cairo University

• Ahmed T Bahnaswy · Cairo University

Study Design

Allocation

RANDOMIZED

Purpose

OTHER

Masking

DOUBLE

Model

PARALLEL

Eligibility

Min Age

1 Year

Max Age

6 Years

Sex

ALL

Healthy Volunteers

No

Timeline & Regulatory

Start

2022-05-20

Primary Completion

2022-09-01

Completion

2022-09-15