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Ultrasound Guided Subcostal Transversus Abdominis Plane Block Versus Quadratus Lumborum Block for Pediatrics Undergoing Pyeloplasty.

2020-02-17 18:20:35 | BioPortfolio

Summary

The aim of this work to compare the analgesic efficacy of preoperative ultrasound guided subcostal TAP block and Quadratus lumborum block in pediatric patients undergoing pyeloplasty surgeries.

Description

This randomized, controlled study is designed to:

- Assess the quality of perioperative analgesia (intraoperative hemodynamics, postoperative pain score and analgesic consumption) provided by ultrasound guided subcostal TAP and quadratus lumborum blocks in pediatrics undergoing pyeloplasty surgeries.

- Compare the efficacy and safety of both blocks in pediatrics undergoing pyeloplasty surgery.

Hypothesis

Following approval from research and ethics committee of anesthesia department, Faculty of Medicine, Cairo University, children will be pre-medicated by intramuscular injection of atropine 0.02 mg/Kg, midazolam 0.2 mg/Kg and ketamine 2 mg/ Kg before admission to operation theater (OR).

Upon arrival to OR; continuous electrocardiography (ECG), pulse oximetry, non-invasive arterial blood pressure will be applied and baseline readings will be recorded, then general anesthesia will be induced by 8% sevoflurane and 50% air in oxygen. Peripheral venous cannula will be inserted after loss of consciousness. If a patient had an intravenous (IV) cannula, induction will be performed using 1.5-2.5 mg/kg propofol, in both situations atracurium at a dose of 0.5 mg/kg will be given intravenously to facilitate endotracheal intubation and fentanyl at a dose 2 µg/kg will be given to abolish stress response of intubation. Anesthesia will be maintained by using 1-1.5% isoflurane in a mixture of oxygen and air (50/50) and atracurium top ups at a dose of 0.1mg/kg every 30 minutes.

Patient positioning and preparation for the block:

For the (sTAP) group (n=39): patients will be in the supine position; after preparing the skin with with povidone iodine, a high frequency (5-10 MHz) ultrasound probe will be placed obliquely on the upper abdominal wall, along the surgical site subcostal margin near the midline. After identifying the rectus abdominis muscle, we will gradually move the ultrasound probe laterally along the subcostal margin until we identify the transversus abdominis muscle lying posterior to the rectus muscle. A 22 G echogenic needle using the in-plane technique will be inserted medially near the xiphoid process aiming towards the iliac crest, then 1 mL/Kg of bupivacaine 0.25% will be injected in the plane between rectus abdominis and transversus abdominis muscles. The patient will then be positioned for the procedure if other than supine position is chosen.

For the (QLB) group (n=39): patients will be positioned in the lateral decubitus position so that the blocked side will be the uppermost one. After skin sterilization with povidone iodine the ultrasound probe will be positioned between the iliac crest and the costal margin at the level of the anterior axillary line to identify the three thin parallel muscles of the anterolateral abdominal wall. The probe will be moved posteriorly following the narrowing of the muscles until the muscle fibers of transversus abdominis muscles taper off into its aponeurosis at the level of the posterior axillary line where the quadratus lumborum muscle is identified. The posterior aspect of the QL muscle is confirmed and a 22 G echogenic needle will be inserted using an in-plane technique from anterolateral to posteromedial towards this posterior aspect of the QL muscle. 1 mL/Kg of bupivacaine 0.25% will be injected behind the QL muscle on the lateral border of the erector spinae muscle. The patient will then be positioned for the procedure if other than lateral decubitus position is chosen.

Vital signs (heart rate (HR) and non-invasive blood pressure) will be recorded at the onset of the block then every 15 minutes intraoperatively, and every 4 hours postoperatively for a period of 24 hours. Fentanyl 0.5 µg /kg as rescue analgesia will be given intraoperatively if HR and or systolic BP increased >20% of baseline up to maximum 5 µg/ kg.

After skin closure, inhalational anesthesia will be discontinued and reversal of muscle relaxation with atropine (0.02 mg/Kg) and neostigmine (0.05 mg/Kg) will be administered IV after return of patient's spontaneous breathing. Patients will then be transferred to post anesthesia care unit (PACU) for 60 min to complete recovery and monitoring.

Postoperative assessment and analgesic regimen:

The Face, Legs, Activity, Cry, Consolability scale (FLACC) (table 1) will be assessed immediately postoperative in the PACU and every 4 hours in the ward for 24 hours. The time to the first request of rescue postoperative analgesic will be: "the time interval between the local anesthesia injection and the first request to postoperative analgesia (patients first complain of pain and or FLACC score ≥4)". an intravenous paracetamol 15mg/kg will be given immediately postoperative and will be repeated every 6 hours. Persistent or breakthrough pain will be managed with incremental intravenous morphine at a dose of 0.05-0.1mg/kg to maintain resting FLACC scale ˂ 4 (maximum dose 0.3mg/kg). Cumulative 24 hours analgesic consumption will be recorded.

Study Design

Conditions

Pain Management

Intervention

Bupivacaine Hydrochloride 0.25% Injection Solution [MARCAINE]

Location

Kasralainy
Cairo
Egypt
11559

Status

Recruiting

Source

Kasr El Aini Hospital

Results (where available)

View Results

Links

Published on BioPortfolio: 2020-02-17T18:20:35-0500

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Medical and Biotech [MESH] Definitions

Adverse reactions that occur initially at the site of injection or infusion. Milder type is confined to a local allergic flare reaction. A more severe reaction is caused by extravasation of VESICANTS from the blood vessel at the site of injection and can cause damage to the surrounding tissue. In tumor flare reaction symptoms involve well beyond the injection site such as an increase in the tumor size and tumor markers levels, bone pain, and HYPERCALCEMIA.

Total or subtotal destruction of the pituitary gland by chemical injection. It is usually achieved by injection of ethyl alcohol via trans-sphenoidal cannulation under stereotaxic control. It is usually performed for the treatment of intractable pain.

Hypertonic sodium chloride solution. A solution having an osmotic pressure greater than that of physiologic salt solution (0.9 g NaCl in 100 ml purified water).

A form of therapy that employs a coordinated and interdisciplinary approach for easing the suffering and improving the quality of life of those experiencing pain.

The injection of solutions into the skin by compressed air devices so that only the solution pierces the skin.

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