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Sciatic nerve block

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https://www.readbyqxmd.com/read/28214338/sciatic-neuropathy-due-to-popliteal-fossa-nerve-block
#1
Adam Aubuchon, W David Arnold, Anna Bracewell, J Chad Hoyle
INTRODUCTION: Sciatic neuropathy following popliteal nerve block (PNB) for regional anesthesia is considered uncommon but has been increasingly recognized in the literature. We identified a case of sciatic neuropathy that occurred after bunionectomy during which a PNB had been performed. METHODS: To understand the frequency of PNB-related sciatic neuropathy we performed a retrospective review of sciatic neuropathies at our center over a five year period. RESULTS: Forty-five cases of sciatic neuropathy were reviewed...
February 18, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28195232/hematopoietic-pannexin-1-function-is-critical-for-neuropathic-pain
#2
Janelle L Weaver, Sanja Arandjelovic, Gregory Brown, Suresh K Mendu, Michael S Schappe, Monica W Buckley, Yu-Hsin Chiu, Shaofang Shu, Jin K Kim, Joyce Chung, Julia Krupa, Vesna Jevtovic-Todorovic, Bimal N Desai, Kodi S Ravichandran, Douglas A Bayliss
Neuropathic pain symptoms respond poorly to available therapeutics, with most treated patients reporting unrelieved pain and significant impairment in daily life. Here, we show that Pannexin 1 (Panx1) in hematopoietic cells is required for pain-like responses following nerve injury in mice, and a potential therapeutic target. Panx1 knockout mice (Panx1(-/-)) were protected from hypersensitivity in two sciatic nerve injury models. Bone marrow transplantation studies show that expression of functional Panx1 in hematopoietic cells is necessary for mechanical hypersensitivity following nerve injury...
February 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28178436/femoral-versus-multiple-nerve-blocks-for-analgesia-after-total-knee-arthroplasty
#3
Anatoli Stav, Leonid Reytman, Roger Sevi, Michael Yohay Stav, Devorah Powell, Yanai Dor, Mickey Dudkiewicz, Fuaz Bayadse, Ahud Sternberg, Michael Soudry
BACKGROUND: The PROSPECT (Procedure-Specific Postoperative Pain Management) Group recommended a single injection femoral nerve block in 2008 as a guideline for analgesia after total knee arthroplasty. Other authors have recommended the addition of sciatic and obturator nerve blocks. The lateral femoral cutaneous nerve is also involved in pain syndrome following total knee arthroplasty. We hypothesized that preoperative blocking of all four nerves would offer superior analgesia to femoral nerve block alone...
January 30, 2017: Rambam Maimonides Medical Journal
https://www.readbyqxmd.com/read/28171798/distribution-of-bupivacaine-hydrochloride-after-sciatic-and-femoral-nerve-blocks-in-cats-a-magnetic-resonance-imaging-study
#4
Marina C Evangelista, Julie de Lassalle, Christine Chevrier, Eric N Carmel, Denise T Fantoni, Paulo V M Steagall
The objective of this study was to evaluate the distribution of bupivacaine hydrochloride using magnetic resonance imaging (MRI) after electrical nerve stimulator (ENS)-guided sciatic (ScN) and femoral (FN) nerve blocks in cats. Six adult cats (body weight 4.8±0.6kg) were anesthetized with acepromazine-buprenorphine-propofol-isoflurane. Transverse and sagittal plan sequences of pelvic limbs were obtained using a high-field magnet (1.5T). Afterwards, the ScN and FN blocks (one block per limb) were performed using 0...
January 27, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28120017/-sciatic-nerve-block-out-of-plane-distal-to-the-bifurcation-effective-and-safe
#5
T Geiser, J Apel, O Vicent, J Büttner
BACKGROUND: Ultrasound guided distal sciatic nerve block (DSB) at bifurcation level shows fast onset and provides excellent success rates. However, its safe performance might be difficult for the unexperienced physician. Just slightly distal to the bifurcation, the tibial nerve (TN) and common fibular nerve (CFN) can be shown clearly separated from each other. Therefore, we investigated if a block done here would provide similar quality results compared to the DSB proximally to the division, with a potentially lower risk of nerve damage...
January 24, 2017: Der Anaesthesist
https://www.readbyqxmd.com/read/28092318/opening-injection-pressure-is-higher-in-intraneural-compared-with-perineural-injections-during-simulated-nerve-blocks-of-the-lower-limb-in-fresh-human-cadavers
#6
Kris Vermeylen, Marlies Hermans, Filiep Soetens, Evie Vereecke, Thorsten Steinfeldt, Gerbrand Groen, Admir Hadzic, Marc Van de Velde
BACKGROUND AND OBJECTIVES: Needle-induced nerve trauma and intraneural injection can lead to neurologic injury during peripheral nerve blocks. In this study, we assessed the utility of opening injection pressure (OIP), time to OIP, and rate of rise to OIP in detecting needle-nerve contact and intraneural injection. METHODS: Five common ultrasound-guided blocks of the femoral, saphenous, subgluteal sciatic, tibial, and common peroneal nerves were simulated in 10 fresh cadavers...
January 13, 2017: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/28086940/ultrasound-guided-percutaneous-peripheral-nerve-stimulation-for-analgesia-following-total-knee-arthroplasty-a-prospective-feasibility-study
#7
Brian M Ilfeld, Christopher A Gilmore, Stuart A Grant, Michael P Bolognesi, Daniel J Del Gaizo, Amorn Wongsarnpigoon, Joseph W Boggs
BACKGROUND: Peripheral nerve stimulation has been used for decades to treat chronic pain but has not been used for postoperative analgesia due to multiple limitations, beginning with invasive electrode placement. With the development of small-diameter/gauge leads enabling percutaneous insertion, ultrasound guidance for accurate introduction, and stimulators small enough to be adhered to the skin, neurostimulation may now be provided in a similar manner to continuous peripheral nerve blocks...
January 13, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28075022/the-mechanistic-basis-for-photobiomodulation-therapy-of-neuropathic-pain-by-near-infrared-laser-light
#8
Vanessa Milanesi Holanda, Maria Cristina Chavantes, Xingjia Wu, Juanita J Anders
BACKGROUND AND OBJECTIVE: Various irradiances have been reported to be beneficial for the treatment of neuropathic pain with near infrared light. However, the mechanistic basis for the beneficial outcomes may vary based on the level of irradiance or fluence rate used. Using in vivo and in vitro experimental models, this study determined the mechanistic basis of photobiomodulation therapy (PBMT) for the treatment of neuropathic pain using a high irradiance. STUDY DESIGN/MATERIALS AND METHODS: In vitro experiments: Cultured, rat DRG were randomly assigned to control or laser treatment (LT) groups with different irradiation times (2, 5, 30, 60, or 120 seconds)...
January 11, 2017: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/28073836/ionotropic-glutamate-receptors-activate-cell-signaling-in-response-to-glutamate-in-schwann-cells
#9
Wendy M Campana, Elisabetta Mantuano, Pardis Azmoon, Kenneth Henry, Michael A Banki, John H Kim, Donald P Pizzo, Steven L Gonias
In the peripheral nervous system, Schwann cells (SCs) demonstrate surveillance activity, detecting injury and undergoing trans-differentiation to support repair. SC receptors that detect peripheral nervous system injury remain incompletely understood. We used RT-PCR to profile ionotropic glutamate receptor expression in cultured SCs. We identified subunits required for assembly of N-methyl-d-aspartic acid (NMDA) receptors (NMDA-R), α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptors, and kainate receptors...
January 10, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28058845/ultrasensitive-phototriggered-local-anesthesia
#10
Changyou Zhan, Weiping Wang, Claudia Santamaria, Bruce Wang, Alina Rwei, Brian P Timko, Daniel S Kohane
An injectable local anesthetic producing repeatable on-demand nerve block would be desirable for pain management. Here we present a phototriggerable device to achieve repeatable and adjustable on-demand local anesthesia in superficial or deep tissues, consisting of gold nanorods attached to low temperature sensitive liposomes (LTSL). The particles were loaded with tetrodotoxin and dexmedetomidine. Near-infrared light (NIR, 808 nm, continuous wave) could heat gold nanorods at low fluence (short duration and low irradiance), leading to rapid release of payload...
January 6, 2017: Nano Letters
https://www.readbyqxmd.com/read/28057459/parabrachial-pituitary-adenylate-cyclase-activating-polypeptide-activation-of-amygdala-endosomal-extracellular-signal-regulated-kinase-signaling-regulates-the-emotional-component-of-pain
#11
Galen Missig, Linda Mei, Margaret A Vizzard, Karen M Braas, James A Waschek, Kerry J Ressler, Sayamwong E Hammack, Victor May
BACKGROUND: Chronic pain and stress-related psychopathologies, such as depression and anxiety-associated abnormalities, are mutually reinforcing; however, the neuronal circuits and mechanisms that underlie this reinforcement are still not well understood. Pituitary adenylate cyclase activating polypeptide (PACAP; Adcyap1) and its cognate PAC1 receptor (Adcyap1r1) are expressed in peripheral nociceptive pathways, participate in anxiety-related responses and have been have been linked to posttraumatic stress disorder and other mental health afflictions...
August 29, 2016: Biological Psychiatry
https://www.readbyqxmd.com/read/28054242/anti-nociceptive-and-anti-inflammatory-actions-of-sulforaphane-in-chronic-constriction-injury-induced-neuropathic-pain-mice
#12
Cheng Wang, Congpin Wang
Neuropathic pain is still considered as incurable disease as current therapies are not ideal in terms of efficacy and tolerability. It is imperative to search for novel drugs to obtain better treatments. Sulforaphane (SFN), a derivative of glucoraphanin present in cruciferous vegetables, exhibits therapeutic effects on inflammation-related diseases. Since inflammation plays an important role in regulating chronic pain, in the present study, we investigated anti-nociceptive effects of SFN and its underlying mechanisms in a neuropathic pain mouse model, sciatic nerve chronic constriction injury (CCI)...
February 2017: Inflammopharmacology
https://www.readbyqxmd.com/read/28050474/technique-efficiency-and-safety-of-different-nerve-blocks-for-analgesia-in-laser-ablation-and-sclerotherapy-for-lower-limb-superficial-venous-insufficiency-a-multicentre-experience
#13
Krishna Prasad Premnath Bellam, Binu Joy, Abhilash Sandhyala, Kiran Naiknaware, Brijesh Ray, Vijayakumar
INTRODUCTION: Laser ablation and sclerotherapy, as minimally invasive alternatives to surgery for varicose veins, have good efficacy, safety and cosmetic result. Some form of anaesthesia is generally used for pain control. AIM: To describe the technique and evaluate the efficacy and safety of femoral, saphenous and sciatic nerve blocks in isolation or in combination for analgesia during laser ablation and sclerotherapy for lower limb varicose veins. MATERIALS AND METHODS: In this prospective observational study, over a period of 33 months, in 856 limbs of 681 patients with varicose veins, ultrasound guided femoral, saphenous and sciatic nerve blocks for analgesia were performed in 769, 808 and 52 instances respectively; following which, endovenous laser ablation, sclerotherapy or combination of both were carried out using standard practice...
November 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28033291/adductor-canal-block-versus-femoral-nerve-block-combined-with-sciatic-nerve-block-as-an-anesthetic-technique-for-hindfoot-and-ankle-surgery-a-prospective-randomized-noninferiority-trial
#14
RANDOMIZED CONTROLLED TRIAL
Han Bum Joe, Ho Sik Choo, Ji Sang Yoon, Sang Eon Oh, Jae Ho Cho, Young Uk Park
BACKGROUND: A femoral nerve block (FNB) in combination with a sciatic nerve block (SNB) is commonly used for anesthesia and analgesia in patients undergoing hindfoot and ankle surgery. The effects of FNB on motor function, related fall risk, and rehabilitation are controversial. An adductor canal block (ACB) potentially spares motor fibers in the femoral nerve, but the comparative effect on hindfoot and ankle surgeries between the 2 approaches is not yet well defined. We hypothesized that compared to FNB, ACB would cause less weakness in the quadriceps and produce similar pain scores during and after the operation...
December 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28033159/effect-of-perineural-dexamethasone-on-the-duration-of-single-injection-saphenous-nerve-block-for-analgesia-after-major-ankle-surgery-a-randomized-controlled-study
#15
Siska Bjørn, Frank Linde, Kristian K Nielsen, Jens Børglum, Rasmus Wulff Hauritz, Thomas Fichtner Bendtsen
BACKGROUND AND OBJECTIVES: Patients undergoing major elective ankle surgery often experience pain from the saphenous nerve territory persisting beyond the duration of a single-injection saphenous nerve block. We hypothesized that perineural dexamethasone as an adjuvant for the saphenous nerve block prolongs the duration of analgesia and postpones as well as reduces opioid-requiring pain. METHODS: Forty patients were included in this prospective, randomized, controlled study...
March 2017: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/28017171/perineural-dexmedetomidine-effects-on-sciatic-nerve-in-rat
#16
Abdulkadir Yektaş, Murat Çabalar, Mehmet Sar, Ayşin Alagöl, Duygu Sultan Çelik, Vildan Yayla, Deniz Tolga
The present study was designed to test the hypothesis that high dose dexmedetomidine would increase the duration of antinociception to a thermal stimulus in a rat model of sciatic nerve blockade without causing nerve damage. The rats were anesthetized with isoflurane. After electromyography (EMG) recordings, right sciatic nerves were explored and perineural injections were delivered: Group D (n=7), 40μgμgkg(-1) dexmedetomidine administration, Group II (n=6), (0.2mL) saline administration, Group III (n=2), only surgically exploration of the right sciatic nevre...
January 2017: Brazilian Journal of Anesthesiology
https://www.readbyqxmd.com/read/27966079/anti-apoptotic-effect-of-igf1-on-schwann-exposed-to-hyperglycemia-is-mediated-by-neuritin-a-novel-neurotrophic-factor
#17
Lingfei Yan, Min Xie, He Lu, Hongman Zhang, Min Shi, Yingduan Zhang, Chunhong Xi, Jianbo Li, Tao Yang
The aim of the present study is to explore the effects of exogenous insulin-like growth factor-1 (IGF1) on hyperglycemia-induced apoptosis of Schwann cells via neuritin-mediated pathway. Neuritin was identified with immunohistochemistry. Exogenous IGF1 was used to prevent possible changes in neuritin expression and apoptosis of Schwann cells isolated from rat sciatic nerves and cultured in high-glucose media. Neuritin silencing or overexpressing lentivirus transfection of Schwann cells was conducted. Expressions of neuritin at levels of transcription or translation were measured using quantitative PCR or Western blot...
December 14, 2016: Molecular Neurobiology
https://www.readbyqxmd.com/read/27955918/dexmedetomidine-added-to-local-anesthetic-mixture-of-lidocaine-and-ropivacaine-enhances-onset-and-prolongs-duration-of-a-popliteal-approach-to-sciatic-nerve-blockade
#18
Xiawei Hu, Jinlei Li, Riyong Zhou, Quanguang Wang, Fangfang Xia, Thomas Halaszynski, Xuzhong Xu
PURPOSE: A literature review of multiple clinical studies on mixing additives to improve pharmacologic limitation of local anesthetics during peripheral nerve blockade revealed inconsistency in success rates and various adverse effects. Animal research on dexmedetomidine as an adjuvant on the other hand has promising results, with evidence of minimum unwanted results. This randomized, double-blinded, contrastable observational study examined the efficacy of adding dexmedetomidine to a mixture of lidocaine plus ropivacaine during popliteal sciatic nerve blockade (PSNB)...
January 2017: Clinical Therapeutics
https://www.readbyqxmd.com/read/27924842/effects-of-liposomes-charge-on-extending-sciatic-nerve-blockade-of-n-ethyl-bromide-of-lidocaine-in-rats
#19
Qinqin Yin, Bowen Ke, Xiaobing Chen, Yikai Guan, Ping Feng, Guo Chen, Yi Kang, Wensheng Zhang, Yu Nie
N-methyl bromide of lidocaine (QX-314) is a potential local anaesthetic with compromised penetration through cell membranes due to its obligated positive charge. Liposomes have been widely used for drug delivery with promising efficacy and safety. Therefore we investigated the local anaesthetic effects and tissue reactions of QX-314 in combination with anionic, cationic or neutral liposomes in rat sciatic nerve block model, and explored the effects of these liposomes on cellular entry of QX-314 in human embryonic kidney 293 cells...
December 7, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27923404/combined-femoral-and-sciatic-nerve-block-versus-femoral-and-local-infiltration-anesthesia-for-pain-control-after-total-knee-arthroplasty-a-meta-analysis-of-randomized-controlled-trials
#20
Jian Li, Xinlian Deng, Tao Jiang
BACKGROUND: The purpose of this systematic review and meta-analysis of randomized controlled trials (RCTs) was to evaluate the effect of combined femoral and sciatic nerve block (SNB) versus femoral and local infiltration anesthesia (LIA) after total knee arthroplasty (TKA). METHODS: The electronic databases PubMed, Embase, Cochrane Library, and Web of Science were searched from their inception to 15 June 2016. Articles comparing combined femoral and SNB versus femoral and LIA for pain control were eligible for this meta-analysis...
December 7, 2016: Journal of Orthopaedic Surgery and Research
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