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The aim of this clinical trial is to compare the analgesic effect of pericapsular nerve block (PENG) with intrathecal morphine in patients scheduled for total hip replacement surgery. The main question to be answered is whether the PENG block is equivalent to intrathecal morphine in reducing postoperative pain.
Participants will be randomised into two groups. Patients assigned to the PENG group will receive spinal anaesthesia with local anaesthetic (isobaric bupivacaine) alone and a PENG block. Patients assigned to the intrathecal morphine (ITM) group will receive spinal anaesthesia with a mixture of local anaesthetic (isobaric bupivacaine) and morphine (100 mcg) and a sham PENG block to ensure patient blinding.
The aim of this double-blind, non-inferiority study is to compare the analgesic effect of a PENG block with intrathecal morphine in patients scheduled for total hip arthroplasty. Postoperative morphine consumption and pain scores, morphine-related adverse effects and functional parameters will be compared between two groups.
The investigators believe that PENG block provides postoperative analgesia equivalent to intrathecal morphine. The research team plans to enrol 80 patients and randomise them to two groups - pericapsular nerve block (PENG) or intrathecal morphine (ITM). After written informed consent, patients will be allocated to one of the two groups according to a computer-generated randomisation list. The PENG group will receive central spinal anaesthesia with 12.5 mg isobaric bupivacaine followed by a PENG block with 20 cc of 0.75% ropivacaine. ITM groups will receive central spinal anaesthesia with 12.5 mg isobaric bupivacaine and 100 mcg morphine followed by a sham PENG block.
During the surgery, 0.15 mg/kg of dexamethasone iv, 1g acetaminophen iv, 30mg ketorolac iv and 40mg/kg magnesium iv will be administered for post operative analgesia.
In the post-operative care unit, pain management will be provided with as needed with 2mg of IV morphine at ten minute intervals for pain scores >3. Once spinal motor block has ceded, the patients will be transferred to the surgical ward with a morphine patient controlled analgesia (PCA) pump. The pump parameters will allow 2 mg boluses of morphine with a 10-minute lockout and a maximum dose of 40 mg in 4 hours. Basal analgesia will be provided with paracetamol (1g/6h) and ibuprofen (400mg/8h). Ondansetron (4mg IV) will be provided in case of nausea or vomiting. A research assistant will conduct post operative visits at 2h, 1 day and 2 days post-operatively to record research data. Functional testing will be performed at day 1 and 2 by physiotherapy personnel.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| PENG group | Experimental | Pericapsular nerve group block |
|
| ITM group | Active Comparator | intrathecal morphine injection |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Intrathecal morphine | Procedure | Spinal anesthesia will be performed as follows: patient will be placed in the lateral decubitus position on the non-operative side. Using sterile gloves red chlorhexidine 2% alcohol solution will be used for skin disinfection. The site will be secured with a sterile drape, and the L4-L5 lumbar space identified. After subcutaneous local infiltration with 1% lidocaine, a 25G Whitacre pencil point spinal needle will be used to access the intrathecal space with free flow of cerebrospinal fluid as confirmation. A mixture of 12.5 mg of isobaric bupivacaine and 100 mcg of morphine will be administered intrathecally. After the spinal anesthesia, the intrathecal morphine (ITM) group will receive a sham PENG block with the block needle inserted subcutaneously, the anesthesiologist using the same verbal block confirmation commands "aspirate, inject" but the needle withdrawn without injection. This will create the appearance of an identical cutaneous injection site to ensure patient blinding. |
| Measure | Description | Time Frame |
|---|---|---|
| Cumulative postoperative morphine consumption at day 1 | total consumption in mg | 24 hours postoperatively |
| Measure | Description | Time Frame |
|---|---|---|
| Morphine consumption in the recovery room | consumption in mg | from admission till discharge from the recovery room, up to 2 hours |
| PCA administered morphine consumption at day 2 | consumption in mg administered by PCA |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Eric Albrecht, Prof | Contact | +41795566341 | eric.albrecht@chuv.ch |
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| University Hospital of Lausanne | Recruiting | Lausanne | Canton of Vaud | 1011 | Switzerland |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 34015859 | Background | Anger M, Valovska T, Beloeil H, Lirk P, Joshi GP, Van de Velde M, Raeder J; PROSPECT Working Group* and the European Society of Regional Anaesthesia and Pain Therapy. PROSPECT guideline for total hip arthroplasty: a systematic review and procedure-specific postoperative pain management recommendations. Anaesthesia. 2021 Aug;76(8):1082-1097. doi: 10.1111/anae.15498. Epub 2021 May 20. | |
| 34448492 |
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| ID | Term |
|---|---|
| D000377 | Agnosia |
| D010149 | Pain, Postoperative |
| ID | Term |
|---|---|
| D010468 | Perceptual Disorders |
| D019954 | Neurobehavioral Manifestations |
| D009461 | Neurologic Manifestations |
| D009422 | Nervous System Diseases |
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single centered, prospective, double blinded non inferiority trial
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quadruple
|
| Pericapsular nerve group block (PENG) | Procedure | Spinal anesthesia with intrathecal injection of 12.5 mg of isobaric bupivacaine will be performed, followed by a PENG block. After skin disinfection, a low frequency curvilinear ultrasound probe (2-5 MHz 8870, BK ultrasound, Peabody Massachussets, US) with a sterile covering will be used to identify the anterior inferior iliac spine, the pubic eminence and the psoas tendon with its fascial plane. A 22 gauge 10cm block needle (Sonoplex® Pajunk, Geisingen, DE), will be used to enter the fascial plane and 20ml of 0.75% Ropivacain (Fresenius Kabi, Krienz CH) will be injected. |
|
| at day 2 postoperatively |
| rest and dynamic pain scores | Visual Analogue Scale(VAS), 0-10 | at 2 hours, day 1 and day 2 postoperatively |
| Incidence of postoperative nausea and vomiting | Presence of nausea or vomiting in the postoperative period | at 2 hours, day 1 and day 2 postoperatively |
| Incidence of pruritus | Presence of pruritus in the postoperative period | at 2 hours, day 1 and day 2 postoperatively |
| Incidence of urinary retention requiring bladder catheterisation | Urinary retention requiring catheterisation | from surgery till day 2 postoperatively |
| Duration of analgesia | Time between study procedure and the first dose of iv morphine | from the time the study procedure is performed up to 36 hours after surgery |
| operated limb quadriceps strength | Medical Research Council Manual Muscle Testing scale, 0-5 | at day 1 and day 2 postoperatively |
| Walking test | maximum distance travelled (meters) | at day 1 and 2 postoperatively |
| Background |
| Gonvers E, El-Boghdadly K, Grape S, Albrecht E. Efficacy and safety of intrathecal morphine for analgesia after lower joint arthroplasty: a systematic review and meta-analysis with meta-regression and trial sequential analysis. Anaesthesia. 2021 Dec;76(12):1648-1658. doi: 10.1111/anae.15569. Epub 2021 Aug 27. |
| 36471258 | Background | Vitola E, Buraka N, Erts R, Golubovska I, Miscuks A. Effect of different low doses of intrathecal morphine (0.1 and 0.2 mg) on pain and vital functions in patients undergoing total hip arthroplasty: a randomised controlled study. BMC Anesthesiol. 2022 Dec 5;22(1):377. doi: 10.1186/s12871-022-01919-8. |
| 23872462 | Background | Kuchalik J, Granath B, Ljunggren A, Magnuson A, Lundin A, Gupta A. Postoperative pain relief after total hip arthroplasty: a randomized, double-blind comparison between intrathecal morphine and local infiltration analgesia. Br J Anaesth. 2013 Nov;111(5):793-9. doi: 10.1093/bja/aet248. Epub 2013 Jul 19. |
| 12826549 | Background | Souron V, Delaunay L, Schifrine P. Intrathecal morphine provides better postoperative analgesia than psoas compartment block after primary hip arthroplasty. Can J Anaesth. 2003 Jun-Jul;50(6):574-9. doi: 10.1007/BF03018643. |
| 27714758 | Background | Kearns R, Macfarlane A, Grant A, Puxty K, Harrison P, Shaw M, Anderson K, Kinsella J. A randomised, controlled, double blind, non-inferiority trial of ultrasound-guided fascia iliaca block vs. spinal morphine for analgesia after primary hip arthroplasty. Anaesthesia. 2016 Dec;71(12):1431-1440. doi: 10.1111/anae.13620. Epub 2016 Oct 7. |
| 33370462 | Background | Roofthooft E, Joshi GP, Rawal N, Van de Velde M; PROSPECT Working Group* of the European Society of Regional Anaesthesia and Pain Therapy and supported by the Obstetric Anaesthetists' Association. PROSPECT guideline for elective caesarean section: updated systematic review and procedure-specific postoperative pain management recommendations. Anaesthesia. 2021 May;76(5):665-680. doi: 10.1111/anae.15339. Epub 2020 Dec 28. |
| 30063657 | Background | Giron-Arango L, Peng PWH, Chin KJ, Brull R, Perlas A. Pericapsular Nerve Group (PENG) Block for Hip Fracture. Reg Anesth Pain Med. 2018 Nov;43(8):859-863. doi: 10.1097/AAP.0000000000000847. |
| 34196965 | Background | Pascarella G, Costa F, Del Buono R, Pulitano R, Strumia A, Piliego C, De Quattro E, Cataldo R, Agro FE, Carassiti M; collaborators. Impact of the pericapsular nerve group (PENG) block on postoperative analgesia and functional recovery following total hip arthroplasty: a randomised, observer-masked, controlled trial. Anaesthesia. 2021 Nov;76(11):1492-1498. doi: 10.1111/anae.15536. Epub 2021 Jul 1. |
| 35933328 | Background | Lin DY, Brown B, Morrison C, Fraser NS, Chooi CSL, Cehic MG, McLeod DH, Henningsen MD, Sladojevic N, Kroon HM, Jaarsma RL. The Pericapsular Nerve Group (PENG) block combined with Local Infiltration Analgesia (LIA) compared to placebo and LIA in hip arthroplasty surgery: a multi-center double-blinded randomized-controlled trial. BMC Anesthesiol. 2022 Aug 6;22(1):252. doi: 10.1186/s12871-022-01787-2. |
| 36529195 | Background | Hu J, Wang Q, Hu J, Kang P, Yang J. Efficacy of Ultrasound-Guided Pericapsular Nerve Group (PENG) Block Combined With Local Infiltration Analgesia on Postoperative Pain After Total Hip Arthroplasty: A Prospective, Double-Blind, Randomized Controlled Trial. J Arthroplasty. 2023 Jun;38(6):1096-1103. doi: 10.1016/j.arth.2022.12.023. Epub 2022 Dec 16. |
| 34290085 | Background | Aliste J, Layera S, Bravo D, Jara A, Munoz G, Barrientos C, Wulf R, Branez J, Finlayson RJ, Tran Q. Randomized comparison between pericapsular nerve group (PENG) block and suprainguinal fascia iliaca block for total hip arthroplasty. Reg Anesth Pain Med. 2021 Oct;46(10):874-878. doi: 10.1136/rapm-2021-102997. Epub 2021 Jul 20. |
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |
| D011183 | Postoperative Complications |
| D010335 | Pathologic Processes |
| D010146 | Pain |