Could The Ultrasound Guided Quadratus Lumborum Block Type 2 Be An Effective Technique For Postoperative Analgesia In Laparoscopic Surrenectomy A Case Report

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COULD THE ULTRASOUND-GUIDED QUADRATUS LUMBORUM BLOCK TYPE 2 BE AN EFFECTIVE TECHNIQUE FOR POSTOPERATIVE ANALGESIA IN LAPAROSCOPIC SURRENECTOMY ? A CASE REPORT

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Book Synopsis COULD THE ULTRASOUND-GUIDED QUADRATUS LUMBORUM BLOCK TYPE 2 BE AN EFFECTIVE TECHNIQUE FOR POSTOPERATIVE ANALGESIA IN LAPAROSCOPIC SURRENECTOMY ? A CASE REPORT by :

Download or read book COULD THE ULTRASOUND-GUIDED QUADRATUS LUMBORUM BLOCK TYPE 2 BE AN EFFECTIVE TECHNIQUE FOR POSTOPERATIVE ANALGESIA IN LAPAROSCOPIC SURRENECTOMY ? A CASE REPORT written by and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Background and Aims:Recent evidences suggested that posterior approaches to the transversus abdominis plane (TAP) block may provide effective postoperative analgesia in laparoscopic abdominal surgery. The ultrasound-guided Quadratus lumborum block type 2 (US-QLB 2) is a novel technique which could be an effective method for postoperative pain relief in these procedures. To test this hypothesis we performed US-QLB 2 in a patient underwent laparoscopic surrenectomy.Methods:A 62-years-old man,BMI 42 Kg/m2 , ASA 3, was scheduled to undergo laparoscopic surrenectomy for an aldosterone-producing adenoma, causing renal insufficiency and vascular damage subsequent to long-term uncontrolled hypertension.Written informed consent was obtained. After induction of general anaesthesia, with the patient in lateral position, we performed US-QLB 2 by injecting 20 ml of 0,5% Levobupicaine in the fascial plane between the quadratus lumborum and latissimus dorsi muscles. Before the end of surgery, 1 g of acetaminophen and Ketorolac 30 mg were intravenously administered. ResultsIntraoperative hemodynamic stability was obtained. In the first 24 hours after surgery, patient reported a prolonged pain relief. Only 3 g of acetaminophen and ketorolac 90 mg were administered, without opioids needing. No discomfort and complications were recorded postoperatively. Conclusions:This case report suggested that US-QLB 2 could provide long-lasting analgesia improving visceral pain control, likely due to extension of local anaesthetic into the paravertebral space. Further studies should be needed to confirm if this technique will be considered a safe and effective method for postoperative analgesia in laparoscopic surrenectomy.

ULTRASOUND-GUIDED QUADRATUS LUMBORUM BLOCK: AN EFFECTIVE METHOD FOR POSTOPERATIVE ANALGESIA IN OPEN PYELOPLASTY

Author : Paolo Scimia
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ISBN 13 :
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Book Synopsis ULTRASOUND-GUIDED QUADRATUS LUMBORUM BLOCK: AN EFFECTIVE METHOD FOR POSTOPERATIVE ANALGESIA IN OPEN PYELOPLASTY by : Paolo Scimia

Download or read book ULTRASOUND-GUIDED QUADRATUS LUMBORUM BLOCK: AN EFFECTIVE METHOD FOR POSTOPERATIVE ANALGESIA IN OPEN PYELOPLASTY written by Paolo Scimia and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Background and Aims:Anderson-Hynes open pyeloplasty (AHP) is a surgical technique for the management of uretero-pelvic junction obstruction (UPJO). In standard AHP, surgeon generally performs the opening of posterior abdominal muscles and detachment of parirenal fat. The large muscle cutting incision is the major cause of significant postoperative pain. Recent evidences suggested that Quadratus lumborum block type 1 (US-QLB 1) could provide effective postoperative analgesia in urological surgery. To test this hypothesis, we described a 52 year old man, ASA 2, who underwent AHP for treatment of a left UPOJ with severe hydronephrosis (grade IV).Methods:After induction of anesthesia with the patient in a right lateral position, we performed US-QLB 1 by injecting 20 ml of 0,5% Ropivacaine plus Dexamethasone 4 mg through a 22 gauge 80 mm needle in the fascial plane between the posterior edge of the transversus abdominis muscle, the quadratus lumborum muscle (QLM) and the underlying transversalis fascia (TF). We ultrasonically confirmed the spread of local anesthetic (LA) over the anterolateral surface of QLM and downward displacement of the retroperitoneal fat. Before the end of surgery, 1 g of acetaminophen and Ketorolac 30 mg were intravenously administered.ResultsPatient remained hemodynamically stable throughout the procedure and reported a prolonged pain relief after surgery, without opioids needing. No discomfort and complications were recorded postoperatively.Conclusions:This case report suggested that US-QLB 1, as part of a multimodal analgesic regimen, could provide long-lasting analgesia for AHP, likely due to a predominant spread of LA deep to TF in the retroperitoneal posterior pararenal space.Keywords:Ultrasound guidanceQuadratus Lumborum BlockPostoperative analgesiaPyeloplastyUretero-pelvic junction obstruction.

COMPARISON OF ULTRASOUND GUIDED ERECTOR SPINAE PLANE BLOCK AND QUADRATUS LUMBORUM TYPE II BLOCK IN LAPAROSCOPIC CHOLECYSTECTOMY

Author : Tulgar Serkan
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ISBN 13 :
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Book Synopsis COMPARISON OF ULTRASOUND GUIDED ERECTOR SPINAE PLANE BLOCK AND QUADRATUS LUMBORUM TYPE II BLOCK IN LAPAROSCOPIC CHOLECYSTECTOMY by : Tulgar Serkan

Download or read book COMPARISON OF ULTRASOUND GUIDED ERECTOR SPINAE PLANE BLOCK AND QUADRATUS LUMBORUM TYPE II BLOCK IN LAPAROSCOPIC CHOLECYSTECTOMY written by Tulgar Serkan and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Erector Spinae Plane Block (ESPB) is a recently described regional anesthetic technique used in upper abdominal surgeries such as laparoscopic cholecystectomy (LC). Quadratus Lumborum Block Type II (QLB2) has also been reported for postoperative analgesia in LC. Herein, we compared the effectiveness of ESPB and QLB-2 in providing postoperative analgesia in patients undergoing these surgeries.This prospective, randomized, controlled, double-blinded study included two groups ( ESPB and QLB-2) with 40 patients each (ASA 1-2-3, aged >18 years due to undergo LC under general anesthesia.) All patients underwent the same general anesthesia regimen. All blocks were performed bilaterally at the end of surgery with the application of 20 ml of local anesthetic mixture for each side. Ultrasound guided ESPB was performed in the lateral position (Th8-9) and QLB-2 in the exaggerated lateral decubitus position. Numeric rating scale, morphine consumption via patient controlled analgesia device were noted for the first 24 hours (NCT03869801).In our preliminary results, each group includes 20 patients. There was no difference between demographic data or type of surgery. There was no difference in NRS score at any hour between the groups; accept than the first hour. Morphine consumption during the first 24 hours were statistically higher in the QLB-2 group compared to ESPB group (7u00b13.60 mg and 4u00b12.25 mg, respectively- ). p:0.046While QLB-2 and ESPB have similar effect on pain scores, ESPB decrease the requirement for analgesic agents in LC when compared to a QLB-2 group.

Quadratus Lumborum Block Type II As Analgesic Strategy In Hip Surgery

Author : Joana Brandu00e3o
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ISBN 13 :
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Book Synopsis Quadratus Lumborum Block Type II As Analgesic Strategy In Hip Surgery by : Joana Brandu00e3o

Download or read book Quadratus Lumborum Block Type II As Analgesic Strategy In Hip Surgery written by Joana Brandu00e3o and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: BackgroundThe Quadratus Lumborum Block (QLB) was initially described in 2007. Currently, this block is performed as a perioperative pain management procedure in abdominal surgery but the publications involving QLB are few and the most part are case reports or small trials involving abdominal surgery. Recently, Parras and Blanco reported its use as an alternative to femoral nerve block for postoperative analgesia after hip surgery. We performed the Quadratus Lumborum Block type II (QLB II) as an analgesic strategy for a femoral intramedullary nail placement.Case ReportWe describe a case of a 90 year-old woman, 62 kg, ASA 2, with hypertension, scheduled for femoral intramedullary nail placement due to a transtrocanteric fracture. We performed a QLB II with 30 ml 0.375% ropivacaine as part of multimodal analgesic strategy, prior to spinal anesthesia with 0,5% bupivacaine 10 mg plus sufentanyl 2u03bcg. Intra-operative intravenous analgesia consisted of acetaminophen 1 g. Additionally, intravenous dexamethasone 4 mg was administered. The procedure took 45 minutes to complete and was uneventful. After resolution of the spinal block, the patient reported only mild incisional pain over the distal part of surgical incision and had sensitive block on dermatomes T7 to L3. The patient didnu2019t demonstrate muscular weakness.For the following 24 hours after the block, the patient had no pain at rest or with movement with acetaminophen 1 g and ketorolac 15 mg every 8 hours. The patient was satisfied with the pain management strategy.DiscussionIn this case, single-shot QLB II promoted a good analgesia in femoral intramedullary nail placement due to transtrocanteric fracture, without occurrence of lower extremity weakness which allowed early mobilization. If itu2019s proven there is no muscular weakness with QLB, it may allow early mobilization with a lower risk of falls than with other blocks like femoral nerve block or lumbar plexus block.The QLB II may be an appropriate alternative as analgesic strategy for femoral neck fracture surgery. Although this nerve block seems to be effective and easy to perform, future prospective studies are needed to clarify the role of QLB in surgical procedures involving the hip.

Single Shot Bilateral Quadratus Lumborum Block, A Suboptimal Alternative When Neuroaxial Or Perineural Catheterization Are Hazardous

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Author : Luu00edsa Ferreira
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ISBN 13 :
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Book Synopsis Single Shot Bilateral Quadratus Lumborum Block, A Suboptimal Alternative When Neuroaxial Or Perineural Catheterization Are Hazardous by : Luu00edsa Ferreira

Download or read book Single Shot Bilateral Quadratus Lumborum Block, A Suboptimal Alternative When Neuroaxial Or Perineural Catheterization Are Hazardous written by Luu00edsa Ferreira and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Bilateral Single-shot Quadratus Lumborum Block as an alternative of epidural analgesia Authors: Luu00edsa Ferreira1, Ana Vaz2, Ana Oliveira3, Carlos Almeida4, Clarinda Neves5, Josu00e9 Pedro Assunu00e7u00e3o61,2,3- Anesthesiology residents 4,5- Anesthesiologists; 6- Dir. Of Anesthesiology department Introduction: In open abdominal surgery, advantages of the epidural catheter in postoperative analgesia are recognized, although there are relative/absolute contraindications. Bilateral single-shot quadratus lumborum block (QLB) produces sensitive block from T6-L1 which promotes visceral and somatic pain relief for several hours.1,2 Case report: Female patient, 41 years old, ASA III, with Charcot's disease, ascites, hyperthermia and leucocytosis. The patient underwent laparotomy for bilateral anexectomy, hysterectomy, appendectomy and omentectomy, in the context of left ovarian tumor. Regarding the patientu2019s morphological alterations of the spine and the probable infection, no epidural catheter was placed. A general anesthesia was performed, with multimodal analgesia in the intraoperative period. In the PACU, the patient presented NRS 9/10 pain. A QLB type 2 was performed with ropivacaine 0.375%, 18 ml, ultrasound guided. Immediately after block the patient reported pain EN 0/10, without requirement of aditional analgesic therapy during 20 hours. By this time NRS started to increase, parecoxib 40mg 2id and tramadol 75mg 3id were added to the analgesic regimen. Up to 48h post-operatively the patient needed 5mg of morphine iv as rescue. Discussion: Epidural analgesia isnu00b4t always applicable and postoperative pain control in patients undergoing open abdominal surgery is very difficult without using high doses of opioids. The bilateral QLB allows the use of high doses of LA and a long duration of the block (without catheter placement that could suffer from bacterial colonization in this patient if epidural catheter or bilateral QLB catheters were used). Theoretically, risk of hypotension exists because LA enters paravertebral space, therefore strict and extended surveillance is necessary in PACU2.Learning points: This case suggests the effectiveness of Bilateral Single-shot Quadratus Lumborum Block in the control of intense postoperative pain, allowing good pain control and decreasing the use of intravenous analgesia. References: 1. Kadam VR. Ultrasound-guided quadratus lumborum block as a postoperative analgesic technique for laparotomy. J Anaesthesiol Clin Pharmacol. 2013;29:550u20132. 2. El-Boghdadly K., Elsharkawy H., Short A., Chin K. J. Quadratus lumborum block nomenclature and anatomical considerations. Regional Anesthesia and Pain Medicine. 2016;41(4):548u2013549. doi: 10.1097/AAP.0000000000000411.

QUADRATUS LUMBORUM BLOCK FOR POSTOPERATIVE ANALGESIA AFTER ABDOMINAL SURGERY IN INFANT PATIENTS: A CASE SERIES.

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ISBN 13 :
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Book Synopsis QUADRATUS LUMBORUM BLOCK FOR POSTOPERATIVE ANALGESIA AFTER ABDOMINAL SURGERY IN INFANT PATIENTS: A CASE SERIES. by :

Download or read book QUADRATUS LUMBORUM BLOCK FOR POSTOPERATIVE ANALGESIA AFTER ABDOMINAL SURGERY IN INFANT PATIENTS: A CASE SERIES. written by and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Background and aimsEffective post-laparotomy analgesia is a well-recognised challenge in infant patients. In addition to intravenous opioids various regional analgesic techniques are used, such as epidural blocks with recognised risks and technical difficulties. The recently intro- duced quadratus lumborum block (QLB)1 ap- pears to be an effective analgesic technique after abdominal surgery in adult patients2,3. In this case series we report encouraging re- sults using QLB as postoperative analgesia in infant patients who have undergone open abdominal surgery.MethodsThe data of infant patients who had undergone open abdominal surgery with QLB as regional analgesia was reviewed. In included patients perioperative care followed standard princi- ples: operation was performed under general anesthesia with intravenous fentanyl boluses 1-2 u03bcg/kg for analgesia. Patients received in- travenous dexamethasone bolus 0,1-0,25 mg/ kg intraoperatively. Ultrasound-guided QLB (type 2) was performed preoperatively after anesthesia induction, Figure 1 and 2. Postop- eratively paracetamol was used regularly and intravenous or peroral opioid (oxycodone or morphine) was available as rescue analgesia. Opioid consumption was reviewed until hos- pital discharge.ResultsFive infant patients were included in this se- ries. Patient characteristics, details of QLB performed and opioid consumption are pre- sented in Table 1 and 2. Overall the need for rescue analgesia was minimal. No complica- tions or side effects were detected.ConclusionsQLB appears to be an effective regional an- algesic technique for postoperative analgesia also in infant patients after open abdominal surgery. Larger prospective studies will be required to establish its efficacy and safety.

THE ANALGESIC EFFICACY OF ULTRASOUND GUIDED CONTINUOUS QUADRATUS LUMBORUM BLOCK VERSUS CONTINUOUS PARAVERTEBRAL BLOCK IN RADICAL CYSTECTOMY-A RANDOMIZED STUDY

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Author : Amr Hieba
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ISBN 13 :
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Book Synopsis THE ANALGESIC EFFICACY OF ULTRASOUND GUIDED CONTINUOUS QUADRATUS LUMBORUM BLOCK VERSUS CONTINUOUS PARAVERTEBRAL BLOCK IN RADICAL CYSTECTOMY-A RANDOMIZED STUDY by : Amr Hieba

Download or read book THE ANALGESIC EFFICACY OF ULTRASOUND GUIDED CONTINUOUS QUADRATUS LUMBORUM BLOCK VERSUS CONTINUOUS PARAVERTEBRAL BLOCK IN RADICAL CYSTECTOMY-A RANDOMIZED STUDY written by Amr Hieba and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Background: Various techniques of regional anesthesia have been used in abdominal surgery including thoracic epidural, thoracic paravertebral block, transverses abdominal plane block. However new techniques such as quadratus lumborum block are tested to detect its efficacy.Purpose: To compare between intraoperative and postoperative analgesic effect of ultrasound guided continuous quadratus lumborum block and continuous thoracic paravertebral block in patients operated for radical cystectomy (primary outcome). Side effects, length of hospital stay and patient satisfaction (secondary outcome).Methods: 60 patients admitted to Urosurgery department at Alexandria Main University Hospital for radical cystectomy were randomly assigned into 2 groups, 30 patients for each group: group I received ultrasound guided quadratus lumborum block with 0.3 ml /kg bupivacaine 0.25% on each side with catheter insertion for maintenance doses 0.1ml/kg/hr on each side while group II will received ultrasound guided thoracic paravertebral block with 0.3 ml/kg bupivacaine 0.25 % on each side with catheter insertion for maintenance doses 0.1 ml/kg/hr on each side.Results: There was no statistically significant difference between the two groups regarding postoperative VAS score, first request of analgesia and length of hospital stay, however there was statistically significant difference between the two groups as regards heart rate and mean blood pressure at 1sr,4th,6th and 7th hrs during the intraoperative periods.Conclusion: It can be concluded that there is no difference in the analgesic efficacy, opioid consumption, and hospital stay between continuous bilateral quadratus lumborum block and continuous bilateral thoracic paravertebral block after radical cystectomy. These data suggest that quadratus lumborum block is a viable alternative for delivering multimodal analgesia in radical cystectomy.

Comparison Of Ultrasound Guided Transversus Abdominis Plane Block And Quadratus Lumborum Block For Postoperative Pain In Cesarean Section

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Book Synopsis Comparison Of Ultrasound Guided Transversus Abdominis Plane Block And Quadratus Lumborum Block For Postoperative Pain In Cesarean Section by :

Download or read book Comparison Of Ultrasound Guided Transversus Abdominis Plane Block And Quadratus Lumborum Block For Postoperative Pain In Cesarean Section written by and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Comparison of ultrasound guided transversus abdominis plane block and quadratus lumborum block for postoperative pain in cesarean section: A prospective, randomized-controlled studyU Caglayan1, C Yilmaz1, D Karasu1, SE Ozgunay1, F Ata1, S Cansabuncu11 University of Health Sciences Bursa Yuksek Ihtisas Training and Education Hospital Departmentt of Anesthesiology and Reanimation, Bursa,TurkeyIntroductionNeuroaxial anesthesia methods are preferred In cesarean section. General anesthesia is performed when the regional anesthesia is contraindicated or when the patient does not want regional anesthesia. Effective analgesia after cesarean section is important for faster recovery and prevention complications.Transversus abdominis plane block (TAP) and Quadratus lumborum block (QL) are used for postoperative analgesia in lower and upper abdominal surgeons (1-4). However, studies comparing the analgesic efficacy of truncal blocks after cesarean section under general anesthesia are inadequate.The aim of this study is to compare the postoperative analgesic efficacy of TAP Block and QL Block administered by ultrasound (US) guidance under the general anesthesia for cesarean section.Materials and MethodsThe study protocol was approved by the Local Ethics Committee and Australian New Zealand Clinical Trials Registry (Ref: ACTRN12617000842369). A written informed consent was obtained from each patient. The study was carried out in accordance with The Code of Ethics of the Declaration of Helsinki. 99 pregnant women aged 18-49 years who refused or contraindicated to regional anesthesia were included in study. In this prospective, randomized, and double blinded study, patients that scheduled for elective cesarean section, were randomly allocated in two groups (Group TAP n=49, Group QL n=50). Standard monitorization and general anesthesia was performed. After surgery was completed, TAP or lateral QL Block (QL1 Block) was applied bilaterally with US guidance.All patients received tenoxicam (20 mg) iv as a multimodal analgesic component. Patient-controlled analgesia (PCA) pump was used for all patients (no loading dose, 25 mg tramadol bolus, 20 minutes of lock out time). The severity of postoperative pain was measured by VAS scale (0=no pain, 10=the worst possible pain). Patients were asked to score the pain at different times after the operation, both at rest and during coughing, 0. 2. 6. 12. and 24 h later. ResultsDemographics, intraoperative hemodynamic changes, duration of surgery and intraoperative fentanyl consumption were similar in both groups (p>0,05). Duration of anesthesia was statistically longer in the Group QL (p=0.044). Primary Outcomes Total tramadol consumption was 227u00b197 mg in Group TAP and 166u00b1101 mg in Group QL (p=0.003). However, no significant difference was found statistically regarding to demand of rescue analgesics (p=0.876). First analgesic administration with PCA was later in Group QL (0,43u00b10,76h vs 1,74u00b12,36 h, p0,001). VAS scores at rest and movement were found in Table 1-2.Secondary OutcomestThere was no statistically significant difference between groups in terms of postoperative side effects (p 0,05). Patient satisfaction in Group QL was significantly higher (p = 0.013).Table 1: Resting VAS scores according to groups VAStGroup TAP (n=49)tGroup QL (n=50)tp0th h#t2,65 u00b11,01t2,00u00b10,96t0,001*2nd h#t1,53u00b10,64t1,18 u00b10,69t0,011*6th h#t1,35 u00b10,72t0,94u00b10,62t0,003*12th h#t1,57 u00b10,76t1,30u00b10,78t0,08524th h#t0,94u00b10,45t0,70u00b10,54t0,022*VAS: Visual Analog scale #: Meanu00b1Standard Deviation, *p

A Randomised Controlled Trial Examining The Analgesic Efficacy Of The Quadratus Lumborum Block Versus The Ilioinguinal/Iliohypogastric Nerve Block For Open Inguinal Herniotomy In Children (Preliminary-Report)

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Author : Jiraporn Khorana
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ISBN 13 :
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Book Synopsis A Randomised Controlled Trial Examining The Analgesic Efficacy Of The Quadratus Lumborum Block Versus The Ilioinguinal/Iliohypogastric Nerve Block For Open Inguinal Herniotomy In Children (Preliminary-Report) by : Jiraporn Khorana

Download or read book A Randomised Controlled Trial Examining The Analgesic Efficacy Of The Quadratus Lumborum Block Versus The Ilioinguinal/Iliohypogastric Nerve Block For Open Inguinal Herniotomy In Children (Preliminary-Report) written by Jiraporn Khorana and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: AbstractBackground: Ilioinguinal/ iliohypogastric nerve block is a commonly performed to control post-herniotomy pain. Posterior quadratus lumborum block has been recently described as an effective postoperative analgesia after paediatric low abdominal surgery. Whilst there are no data regarding the use of posterior quadratus lumborum block in comparison with the traditional ilioinguinal/ iliohypogastric nerve block in children.Aim: This randomized assessor-blinded study compared postoperative analgesic effects between ultrasound-guided posterior quadratus lumborum block and ilioinguinal/ iliohypogastric nerve block in paediatric inguinal herniotomy.Methods: Forty children (1-7 years) scheduled for unilateral open herniotomy were randomly assigned to receive an ultrasound-guided posterior quadratus lumborum block with 0.25% bupivacaine 0.5 ml kg-1 or ultrasound-guided ilioinguinal/ iliohypogastric nerve block with 0.25% bupivacaine 0.2 ml kg-1 after induction of general anaesthesia. Postoperative analgesia in the first 24 hours consisted of as-required fentanyl in the recovery room and as-required acetaminophen at ward. Postoperative analgesic consumption, pain intensity using a Childrenu2019s Hospital of Eastern Ontario Pain Scale (CHEOPS) score, block performance data, success rate, block-related complications and parental satisfaction were assessed.Results: Both regional anesthetic techniques produced 100% success rate. Number of patients who did not require any postoperative analgesics was significantly higher in the posterior quadratus lumborum block group (79.0% VS 36.8%, P =0.020). There was a clinically but not statistically significant difference in the time to first acetaminophen requirement in the posterior quadratus lumborum block group (8.4 u00b1 4.1 VS 4.8 u00b1 2.2 hours, P =0.062). The CHEOPS scores at 30-minute and 1, 2, 6, 12, and 24-hour were similar between groups. There was no evidence of between-group differences in block performance time, number of needle passes, block related complications and parental satisfaction. Conclusions: Posterior quadratus lumborum block provided better pain control than ilioinguinal/ iliohypogastric nerve block after open herniotomy in children. The ultrasound guidance technique for the posterior quadratus lumborum block for pediatric patients is feasible and as simple as the ultrasound-guided ilioinguinal/ iliohypogastric nerve block.