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Sciatic nerve block

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https://www.readbyqxmd.com/read/29667940/the-importance-of-the-saphenous-nerve-block-for-analgesia-following-major-ankle-surgery-a-randomized-controlled-double-blind-study
#1
Siska Bjørn, Wan Yi Wong, Jørgen Baas, Kristian K Nielsen, Jens Børglum, Rasmus Wulff Hauritz, Thomas Fichtner Bendtsen
BACKGROUND AND OBJECTIVES: Major ankle surgery causes intense postoperative pain, and whereas the importance of a sciatic nerve block is well established, the clinical significance of a supplemental saphenous nerve block has never been determined in a prospective, randomized, double-blind, placebo-controlled trial. We hypothesized that a saphenous nerve block reduces the proportion of patients experiencing significant clinical pain after major ankle surgery. METHODS: Eighteen patients were enrolled and received a popliteal sciatic nerve block...
March 26, 2018: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/29657246/effects-of-three-forms-of-local-anesthesia-on-perioperative-fentanyl-induced-hyperalgesia
#2
Lu Chang, Fang Ye, Quehua Luo, Zewen Wang, Yimin Wang, Zhengyuan Xia, Haihua Shu
Both local infiltration analgesia (LIA) and nerve block are common analgesic modalities for pain relief after surgery. The aim of the current study was to investigate the effects of those two modalities on pain behavior and the expression of pro-inflammatory cytokines such as interleukin (IL)-1β and IL-6 and tumor necrosis factor-α (TNF-α) in the spinal cord and dorsal root ganglion (DRG) in a rat model of perioperative fentanyl induced hyperalgesia. Rats were injected with fentanyl (60 μg/kg) 4 times and received a plantar incision after the second injection or they received pre-incision LIA and sciatic nerve block (SNB) or post-incision LIA with levobupivacaine (0...
April 15, 2018: Bioscience Trends
https://www.readbyqxmd.com/read/29601408/microanatomical-nerve-architecture-of-6-mammalian-species-is-trans-species-translational-anatomic-extrapolation-valid
#3
Anna Server, Miguel A Reina, André P Boezaart, Alberto Prats-Galino, Marielle Esteves Coelho, Xavier Sala-Blanch
BACKGROUND AND OBJECTIVES: Various animal models have historically been used to study iatrogenic nerve injury during performance of conduction nerve blocks. Our aims were to compare the microstructures of nerves in commonly used species to those of humans and to explore the validity of the extrapolating these findings to humans. METHODS: High-resolution, light-microscopic images were obtained from cross sections of sciatic nerves at their bifurcation from fresh rat, rabbit, pig, sheep, dog, and human cadavers...
March 29, 2018: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/29576126/investigation-into-the-visual-perceptive-ability-of-anaesthetists-during-ultrasound-guided-interscalene-and-femoral-blocks-conducted-on-soft-embalmed-cadavers-a-randomised-single-blind-study
#4
A Mustafa, J Seeley, S Munirama, M Columb, M McKendrick, A Schwab, G Corner, R Eisma, G Mcleod
BACKGROUND: Errors may occur during regional anaesthesia whilst searching for nerves, needle tips, and test doses. Poor visual search impacts on decision making, clinical intervention, and patient safety. METHODS: We conducted a randomised single-blind study in a single university hospital. Twenty trainees and two consultants examined the paired B-mode and fused B-mode and elastography video recordings of 24 interscalene and 24 femoral blocks conducted on two soft embalmed cadavers...
April 2018: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/29546785/targeting-macrophage-and-microglia-activation-with-colony-stimulating-factor-1-receptor-inhibitor-is-an-effective-strategy-to-treat-injury-triggered-neuropathic-pain
#5
SeungHwan Lee, Xiang Qun Shi, Anni Fan, Brian West, Ji Zhang
Introduction Neuropathic pain is a debilitating condition. The importance of neuroimmune interactions in neuropathic pain has been evidenced by the involvement of different immune cells in peripheral and central sensitization of pathological pain. Macrophages and microglia are the most abundant immune cells activated in injured nerves and spinal cord, respectively. Several lines of evidence showed that macrophage/microglia survival, activation, proliferation, and differentiation require the involvement of macrophage-colony stimulating factor...
January 2018: Molecular Pain
https://www.readbyqxmd.com/read/29532737/the-venom-of-ornithoctonus-huwena-affect-the-electrophysiological-stability-of-neonatal-rat-ventricular-myocytes-by-inhibiting-sodium-potassium-and-calcium-current
#6
Sha Yan, Pengfei Huang, Ying Wang, Xiongzhi Zeng, Yiya Zhang
Spider venoms are known to contain various toxins that are used as an effective means to capture their prey or to defend themselves against predators. An investigation of the properties of Ornithoctonus huwena (O.huwena) crude venom found that the venom can block neuromuscular transmission of isolated mouse phrenic nerve-diaphragm and sciatic nerve-sartorius preparations. However, little is known about its electrophysiological effects on cardiac myocytes. In this study, electrophysiological activities of ventricular myocytes were detected by 100 μg/mL venom of O...
March 13, 2018: Channels
https://www.readbyqxmd.com/read/29520522/the-role-of-sciatic-nerve-block-to-complement-femoral-nerve-block-in-total-knee-arthroplasty-a-meta-analysis-of-randomized-controlled-trials
#7
Andres Zorrilla-Vaca, Jinlei Li
INTRODUCTION: Femoral nerve block (FNB) appears to have higher postoperative analgesic benefits compared with the patient-controlled analgesia (PCA) in total knee arthroplasty (TKA). However, the role of sciatic nerve block (SNB) as a complement to FNB remains controversial. We performed a meta-analysis assessing the benefits of the SNB as a complement to FNB, as well as comparing the efficacy of single-injection versus continuous SNB in TKA. METHODS: Our group conducted a systematic literature search in PubMed, EMBASE and Google Scholar...
March 8, 2018: Journal of Anesthesia
https://www.readbyqxmd.com/read/29505788/metabotropic-glutamate-receptor-subtype-7-in-the-dorsal-striatum-oppositely-modulates-pain-in-sham-and-neuropathic-rats
#8
Ida Marabese, Serena Boccella, Monica Iannotta, Livio Luongo, Vito de Novellis, Francesca Guida, Nicola Serra, Antonio Farina, Sabatino Maione, Enza Palazzo
The study investigated the role of the metabotropic glutamate receptor subtype 7 (mGluR7) in pain signalling in the dorsal striatum of sham and neuropathic rats. Supraspinal circuitries involved in the dorsal striatum control of pain were also explored. In the sham rats, microinjection of N,N'-bis(diphenylmethyl)-1,2-ethanediamine (AMN082), a selective mGluR7 positive allosteric modulator, into the dorsal striatum, facilitated pain, increased the activity of the ON cells and inhibited the activity of the OFF cells in the rostral ventromedial medulla, and decreased glutamate levels in the dorsal striatum...
March 2, 2018: Neuropharmacology
https://www.readbyqxmd.com/read/29505566/blood-concentration-of-bupivacaine-and-duration-of-sensory-and-motor-block-following-ultrasound-guided-femoral-and-sciatic-nerve-blocks-in-dogs
#9
Michéal O Cathasaigh, Matt R Read, Aylin Atilla, Teresa Schiller, Grace P S Kwong
Peripheral nerve blocks are becoming increasingly popular for perioperative use as anesthetics and analgesics in small animals. This prospective study was performed to investigate the duration of motor and sensory blockade following use of bupivacaine for ultrasound-guided femoral and sciatic nerve blocks in dogs and to measure the plasma concentrations of bupivacaine that result from these procedures. Six dogs were anesthetized twice using a randomized cross-over design. At the first anesthetic, dogs were assigned to receive either an ultrasound-guided femoral nerve block or sciatic nerve block with 0...
2018: PloS One
https://www.readbyqxmd.com/read/29505435/effects-of-intraneural-injection-of-dexmedetomidine-in-combination-with-ropivacaine-in-rat-sciatic-nerve-block
#10
Bum-Soo Kim, Joon-Hyuk Choi, Suk-Hwan Baek, Deok-Hee Lee
BACKGROUND AND OBJECTIVES: Dexmedetomidine is known to have neural protection effect via attenuation of inflammatory responses induced by local anesthetics. We investigated whether intraneural dexmedetomidine is effective for attenuating or preventing neural injury resulting from inadvertent intraneural injection of local anesthetic. METHODS: Rats were randomly divided, and left sciatic nerve was surgically exposed. The rats received no injection (control group) or intraneural injections of 0...
March 3, 2018: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/29489674/a-case-report-the-use-of-ultrasound-guided-peripheral-nerve-block-during-above-knee-amputation-in-a-severely-cardiovascular-compromised-patient-who-required-continuous-anticoagulation
#11
Myong-Hwan Karm, Sohee Lee, Syn-Hae Yoon, Sukyung Lee, Wonuk Koh
RATIONALE: Although lower-extremity surgeries are mainly performed under general or central neuraxial anesthesia, ultrasound-guided peripheral nerve block (PNB) can be a good alternative, especially for patients who require continuous anticoagulation treatment and present with poor cardiovascular conditions. PATIENTS CONCERNS: The patient required continuous anticoagulation treatment due to the high risk of thromboembolism and poor cardiovascular conditions. DIAGNOSES: The patient required lower-extremity amputation due to atherosclerotic and thromboembolic obstruction...
March 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29484267/pocd-in-patients-receiving-total-knee-replacement-under-deep-vs-light-anesthesia-a-randomized-controlled-trial
#12
Ruixue Hou, Hong Wang, Lianhua Chen, Yimin Qiu, Shitong Li
Objectives: Clinical observation, as well as randomized controlled trials, indicated an increasing rate of postoperative cognitive dysfunction (POCD) with increasing depth of general anesthesia. However, the findings are subject to bias due to varying degree of analgesia. In this trial, we compared the rate of POCD between patients receiving light versus high anesthesia while holding analgesia comparable using nerve block. Methods: Elderly patients (≧60 years) receiving elective total knee replacement were randomized to receive the surgery under general anesthesia at BIS 40-50 (LOBIS group) or BIS 55-65 (HIBIS group)...
February 2018: Brain and Behavior
https://www.readbyqxmd.com/read/29431744/a-histone-deacetylase-3-dependent-pathway-delimits-peripheral-myelin-growth-and-functional-regeneration
#13
Xuelian He, Liguo Zhang, Luis F Queme, Xuezhao Liu, Andrew Lu, Ronald R Waclaw, Xinran Dong, Wenhao Zhou, Grahame Kidd, Sung-Ok Yoon, Andres Buonanno, Joshua B Rubin, Mei Xin, Klaus-Armin Nave, Bruce D Trapp, Michael P Jankowski, Q Richard Lu
Deficits in Schwann cell-mediated remyelination impair functional restoration after nerve damage, contributing to peripheral neuropathies. The mechanisms mediating block of remyelination remain elusive. Here, through small-molecule screening focusing on epigenetic modulators, we identified histone deacetylase 3 (HDAC3; a histone-modifying enzyme) as a potent inhibitor of peripheral myelinogenesis. Inhibition of HDAC3 enhanced myelin growth and regeneration and improved functional recovery after peripheral nerve injury in mice...
February 12, 2018: Nature Medicine
https://www.readbyqxmd.com/read/29415656/comparison-of-lumbar-plexus-block-using-the-short-axis-in-plane-method-at-the-plane-of-the-transverse-process-and-at-the-articular-process-a-randomized-controlled-trial
#14
Rui Lu, Chengcheng Shen, Chunyong Yang, Yan Chen, Juanjuan Li, Kaizhi Lu
BACKGROUND: Although the safety and effectiveness of the short-axis in-plane method has been confirmed for lumbar plexus block, the operation is difficult and has a high rate of epidural spread at the plane of the articular process. Therefore, we developed a new in-plane technique, called the beach chair method, which displays images from the transverse process. We compared the operative difficulty and incidence of epidural spread of the beach chair method with those of the control method (at the plane of the articular process) in this randomized controlled clinical trial...
February 7, 2018: BMC Anesthesiology
https://www.readbyqxmd.com/read/29409271/comparison-of-postoperative-pain-control-methods-after-bony-surgery-in-the-foot-and-ankle
#15
Chan Kang, Gi-Soo Lee, Sang-Bum Kim, You-Gun Won, Jeong-Kil Lee, You-Sun Jung, Hyung-June Cho
BACKGROUND: We performed a prospective study to evaluate and compare the effectiveness of postoperative pain control methods after bone surgery in the foot and ankle. METHODS: Among the patients who underwent foot and ankle surgery from June 2014 to September 2015 with an ultrasound-guided nerve block, 84 patients who fully completed a postoperative pain survey were enrolled. An opioid patch (fentanyl patch, 25mg) was applied in group A (30 patients). Diluted anesthetic (0...
June 24, 2017: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29386025/mirna-23a-cxcr4-regulates-neuropathic-pain-via-directly-targeting-txnip-nlrp3-inflammasome-axis
#16
Zhiqiang Pan, Qun Shan, Pan Gu, Xiao Min Wang, Lydia Wai Tai, Menglan Sun, Xin Luo, Liting Sun, Chi Wai Cheung
BACKGROUND: Chemokine CXC receptor 4 (CXCR4) in spinal glial cells has been implicated in neuropathic pain. However, the regulatory cascades of CXCR4 in neuropathic pain remain elusive. Here, we investigated the functional regulatory role of miRNAs in the pain process and its interplay with CXCR4 and its downstream signaling. METHODS: miRNAs and CXCR4 and its downstream signaling molecules were measured in the spinal cords of mice with sciatic nerve injury via partial sciatic nerve ligation (pSNL)...
January 31, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29369966/an-orally-active-epac-inhibitor-reverses-mechanical-allodynia-and-loss-of-intraepidermal-nerve-fibers-iin-a-mouse-model-of-chemotherapy-induced-peripheral-neuropathy
#17
Pooja Singhmar, XiaoJiao Huo, Yan Li, Patrick M Dougherty, Fang Mei, Xiaodong Cheng, Cobi J Heijnen, Annemieke Kavelaars
Chemotherapy-induced peripheral neuropathy (CIPN) is a major side-effect of cancer treatment that significantly compromises quality of life of cancer patients and survivors. Identification of targets for pharmacological intervention to prevent or reverse CIPN is needed. We investigated Exchange protein regulated by cAMP (Epac) as a potential target. Epacs are cAMP-binding proteins known to play a pivotal role in mechanical allodynia induced by nerve injury and inflammation. We demonstrate that global Epac1-knockout (Epac1-/-) male and female mice are protected against paclitaxel-induced mechanical allodynia...
January 23, 2018: Pain
https://www.readbyqxmd.com/read/29366344/complications-after-multiple-site-peripheral-nerve-blocks-for-foot-and-ankle-surgery-compared-with-popliteal-sciatic-nerve-block-alone
#18
Young Uk Park, Jae Ho Cho, Doo Hyung Lee, Wan Sun Choi, Han Dong Lee, Keun Soo Kim
BACKGROUND: Single or combined multiple-site peripheral nerve blocks (PNBs) are becoming popular for patients undergoing surgery on their feet or ankles. These procedures are known to be generally safe in surgical settings compared with other forms of anesthesia, such as spinal block. The purposes of this study were to assess the incidence of complications after the administration of multiple PNBs for foot and ankle surgery and to compare the rates of complications between patients who received a single PNB and those who received multiple blocks...
January 1, 2018: Foot & Ankle International
https://www.readbyqxmd.com/read/29338151/oral-prolonged-release-oxycodone-naloxone-offers-equivalent-analgesia-to-intravenous-morphine-patient-controlled-analgesia-after-total-knee-replacement-a-randomized-controlled-trial
#19
Alberto Manassero, Andrea Fanelli, Susanna Ugues, Cristian Bailo, Stefano Dalmasso
BACKGROUND: The purpose of this study was to determine whether oral prolonged- release oxycodone-naloxone combination (OXN) could provide equivalent analgesia and a side-effect profile similar to intravenous morphine patient-controlled analgesia (IVPCA) for the control of pain in the immediate postoperative period after total knee replacement (TKR). METHODS: All patients received a sciatic nerve block with 0.3% ropivacaine 15ml, femoral nerve block with 0.5% ropivacaine 20 ml, spinal anesthesia and postoperative continuous femoral nerve infusion (ropivacaine 0...
January 16, 2018: Minerva Anestesiologica
https://www.readbyqxmd.com/read/29338149/injection-pressure-mapping-of-intraneural-vs-perineural-injections-further-lessons-from-cadaveric-studies
#20
Andrzej Krol, Arber Vala, Leonidas Phylactides, Matthew Szarko, Miguel A Reina, Jose de Andrés
BACKGROUND: The aim of the study was to investigate the difference between intraneural and perineural injection pressures in human cadavers. Targeted nerves included the cervical roots, the supraclavicular and infraclavicular brachial plexus, the sciatic-subgluteal nerve and the common peroneal and tibial nerves. METHODS: Ten readings were obtained for each nerve location. 1mL of 0.9% NaCl was injected over ten seconds - deliberately slower than in clinical practice to eliminate the risk of aberrant readings relating to the speed of injection...
January 16, 2018: Minerva Anestesiologica
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