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Regional nerve blocks

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https://www.readbyqxmd.com/read/28219984/motor-neurons-tune-premotor-activity-in-a-vertebrate-central-pattern-generator
#1
Kristy J Lawton, Wick M Perry, Ayako Yamaguchi, Erik Zornik
Central patterns generators (CPGs) are neural circuits that drive rhythmic motor output without sensory feedback. Vertebrate CPGs are generally believed to operate in a top-down manner in which premotor interneurons activate motor neurons that in turn drive muscles. In contrast, the frog (Xenopus laevis) vocal CPG contains a functionally unexplored neuronal projection from the motor nucleus to the premotor nucleus, indicating a recurrent pathway that may contribute to rhythm generation. In this study we characterized the function of this bottom-up connection...
February 20, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28214338/sciatic-neuropathy-due-to-popliteal-fossa-nerve-block
#2
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/28213131/nerp-2-regulates-gastric-acid-secretion-and-gastric-emptying-via-the-orexin-pathway
#3
Cherl Namkoong, Koji Toshinai, T M Zaved Waise, Hideyuki Sakoda, Kazuki Sasaki, Yoichi Ueta, Min-Seon Kim, Naoto Minamino, Masamitsu Nakazato
Neuroendocrine regulatory peptide (NERP)-2 is derived from a distinct region of VGF, a neurosecretory protein originally identified as a product of a nerve growth factor-responsive gene in rat PC12 cells. Colocalization of NERP-2 with orexin-A in the lateral hypothalamus increases orexin-A-induced feeding and energy expenditure in both rats and mice. Orexigenic and anorectic peptides in the hypothalamus modulate gastric function. In this study, we investigated the effect of NERP-2 on gastric function in rats...
February 14, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28208978/a-randomized-controlled-study-of-0-5-bupivacaine-0-5-ropivacaine-and-0-75-ropivacaine-for-supraclavicular-brachial-plexus-block
#4
Ranjan R Venkatesh, Prabhat Kumar, Ramachandran R Trissur, Sagiev Koshy George
INTRODUCTION: For any surgery in the upper extremity that does not involve the shoulder, a supraclavicular block is preferred, as it is a safe procedure associated with rapid onset and reliable anaesthesia. Although ropivacaine has been extensively studied for epidural anaesthesia, very few reports exist on its use in supraclavicular brachial plexus block. AIM: This study was conducted to investigate and compare the effectiveness of supraclavicular brachial plexus anaesthesia with two different concentrations of ropivacaine (0...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28195897/base-of-skull-blocks-for-open-reduction-and-internal-fixation-of-faciomaxillary-fractures
#5
Sandeep Mehrotra, Sunil Anand
INTRODUCTION: Faciomaxillary fractures (FMF) occur in a significant proportion of trauma patients. Nearly all polytrauma patients and even those with isolated FMF are managed under general anesthesia for definitive management. We propose the use of regional nerve blocks as a safe and effective means for open reduction and fixation of isolated FMF. AIM AND OBJECTIVES: The aim is to evaluate the feasibility, effectiveness and safety of base of skull maxillomandibular and distal trigeminal nerve blocks in the management of FMF...
February 14, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28192858/deep-and-superficial-circumflex-iliac-arteries-and-their-relationship-to-the-ultrasound-guided-femoral-nerve-block-procedure-a-cadaver-study
#6
Keiko Ogami, Hiroaki Murata, Akiko Sakai, Shuntaro Sato, Kazunobu Saiki, Keishi Okamoto, Yoshitaka Manabe, Tetsuya Hara, Toshiyuki Tsurumoto
BACKGROUND: The in-plane lateral to medial approach is a standard technique for ultrasound-guided femoral nerve block (USG-FNB). The first bifurcation of the femoral artery, which consists of the deep artery of the thigh (DAT) or occasionally the lateral circumflex femoral artery (LCFA), is regarded as the distal border for this procedure. We sometimes detect arteries along the estimated needle trajectory for USG-FNB. The superficial (SCIA) and deep (DCIA) circumflex iliac arteries run laterally parallel to the inguinal ligament from the femoral or external iliac artery...
February 13, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28186424/defining-local-nerve-blocks-for-feline-distal-pelvic-limb-surgery-a-cadaveric-study
#7
Masataka Enomoto, B Duncan X Lascelles, Mathew P Gerard
Objectives Anatomical and methodological detail is lacking regarding local anesthetic peripheral nerve block techniques for distal pelvic limb surgery in cats. The aim of this study was to develop, describe and test nerve block methods based on cadaveric dissections and dye injections. Methods Ten pairs of feline pelvic limbs (n = 20) were dissected and the tibial nerve (T n.), common fibular (peroneal) nerve (CF n., and its two branches, the superficial fibular [peroneal] nerve [SpF n.] and the deep fibular [peroneal] nerve [DpF n...
February 1, 2017: Journal of Feline Medicine and Surgery
https://www.readbyqxmd.com/read/28185262/ultrasound-guided-approach-to-nerves-direct-vs-tangential-and-the-incidence-of-intraneural-injection-a-cadaveric-study
#8
L A Sermeus, X Sala-Blanch, J G McDonnell, C A Lobo, B J Nicholls, G J van Geffen, O Choquet, G Iohom, B de Jose Maria Galve, C Hermans, M Lammens
This study evaluated the incidence of nerve puncture and intraneural injection based on the needle approach to the nerve (direct vs. tangential). Two expert operators in regional anaesthesia performed in-plane ultrasound-guided nerve blocks (n = 158) at different levels of the brachial plexus in cadavers, aiming either directly for the nerve (n = 77) or tangentially inferior to the nerve (n = 81). After reaching the outer limit of the nerve, the needle was intentionally advanced approximately 1 mm in both approaches, and 0...
February 10, 2017: Anaesthesia
https://www.readbyqxmd.com/read/28184266/utility-of-ultrasound-guided-transversus-abdominis-plane-block-for-day-case-inguinal-hernia-repair
#9
Luciano Frassanito, Sara Pitoni, Gianluigi Gonnella, Sergio Alfieri, Miryam Del Vicario, Stefano Catarci, Gaetano Draisci
BACKGROUND: The transversus abdominis plane (TAP) block is a regional anesthesia technique that effectively reduces the pain intensity and use of analgesia in abdominal surgery. The aim of this study was to determine the utility of the ultrasound-guided TAP block in improving the efficacy of the ultrasound-guided ilioinguinal/iliohypogastric nerve (IIN/IHN) block for intraoperative anesthesia and postoperative pain control in day-case inguinal hernia repair (IHR). METHODS: We conducted a descriptive study of patients undergoing elective primary unilateral open IHR...
February 2017: Korean Journal of Anesthesiology
https://www.readbyqxmd.com/read/28126454/ultrasound-guided-retroclavicular-approach-infraclavicular-brachial-plexus-block-for-upper-extremity-emergency-procedures
#10
Josh Luftig, Daniel Mantuani, Andrew A Herring, Arun Nagdev
The America Society of Anesthesiology guidelines recommend multimodal analgesia that combines regional anesthetic techniques with pharmacotherapy to improve peri-procedural pain management and reduce opioid related complications. Commonly performed emergency procedures of the upper extremity such as fracture and dislocation reduction, wound debridement, and abscess incision and drainage are ideal candidates for ultrasound-guided (USG) regional anesthesia of the brachial plexus. However, adoption of regional anesthesia by emergency practitioners has been limited by concerns for potential complications and perceived technical difficulty...
January 15, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28121019/tibial-nerve-block-using-an-ultrasound-guided-inframalleolar-medial-plantar-nerve-perineural-injection-a-technical-note
#11
Christopher J Burke, Ronald S Adler
Sonographic-guided tibial nerve block allows for rapid anesthetization of the heel and plantar regions of the foot. We describe a variant technique for tibial nerve regional anesthesia utilizing perineural injection of the medial plantar nerve proximal to the sustentaculum tali where the nerve is superficial and readily accessed, with resultant retrograde flow of local anesthetic proximally. Perineural injection of the medial plantar nerve at the inframalleolar level provides a simple, safe, and effective alternative method to achieve tibial nerve block for regional anesthesia in a variety of procedures...
January 25, 2017: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/28118226/intraoperative-placement-of-pectoral-nerve-block-catheters-description-of-a-novel-technique-and-review-of-the-literature
#12
Katharine M Hinchcliff, Jared R Hylton, Hakan Orbay, Michael S Wong
Regional and neuraxial anesthesia for pain management after breast surgery is not widely used despite data showing improved postoperative pain control and patient satisfaction scores. We report a case of a 61-year-old woman who underwent bilateral mastectomies, and received postoperative analgesia via pectoral nerves 1 and 2 nerve blocks. This case highlights a previously undescribed technique of prolonged postoperative pain control by intraoperative placement of pectoral nerves 1 and 2 regional anesthesia catheters under direct visualization...
January 23, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28112483/ultrasound-guided-diagnosis-and-injection-of-the-lateral-femoral-cutaneous-nerve-with-an-anatomical-variation
#13
D Palamar, R Terlemez, K Akgun
Meralgia paresthetica (MP) is an entrapment neuropathy of the lateral femoral cutaneous nerve (LFCN). There are many variations in the course of the LFCN. A 55-year-old woman presented with pain and tingling sensations on the anterolateral aspect of her left thigh. Physical examination revealed hypoesthesia of the proximal anterolateral thigh on the left side. During the electrodiagnostic study, sensory nerve action potential of the LFCN could not be obtained on both sides. Through those clinical and electrophysiological findings, we prediagnosed the case as MP and planned to perform diagnostic nerve block...
January 23, 2017: Pain Practice: the Official Journal of World Institute of Pain
https://www.readbyqxmd.com/read/28079754/ultrasound-guided-needle-technique-accuracy-prospective-comparison-of-passive-magnetic-tracking-versus-unassisted-echogenic-needle-localization
#14
Angela N Johnson, Jeffery S Peiffer, Nahi Halmann, Luke Delaney, Cindy A Owen, Jeff Hersh
BACKGROUND AND OBJECTIVES: Ultrasound-guided regional anesthesia facilitates an approach to sensitive targets such as nerve clusters without contact or inadvertent puncture. We compared accuracy of needle placement with a novel passive magnetic ultrasound needle guidance technology (NGT) versus conventional ultrasound (CU) with echogenic needles. METHODS: Sixteen anesthesiologists and 19 residents performed a series of 16 needle insertion tasks each, 8 using NGT (n = 280) and 8 using CU (n = 280), in high-fidelity porcine phantoms...
March 2017: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/28079735/incidence-of-local-anesthetic-systemic-toxicity-in-orthopedic-patients-receiving-peripheral-nerve-blocks
#15
Eva E Mörwald, Nicole Zubizarreta, Crispiana Cozowicz, Jashvant Poeran, Stavros G Memtsoudis
BACKGROUND AND OBJECTIVES: Peripheral nerve blocks are increasingly used. However, despite low complication rates, concerns regarding local anesthetic systemic toxicity remain. Although recent studies suggest that this severe complication has decreased considerably, there is a paucity of data about it on a national level. We sought to elucidate the incidence of local anesthetic systemic toxicity on a national level and therefore provide guidance toward the need for preparedness in daily anesthetic practice...
January 9, 2017: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/28067709/factors-associated-with-risk-of-neurologic-complications-after-peripheral-nerve-blocks-a-systematic-review
#16
Rakesh V Sondekoppam, Ban C H Tsui
The onset of neurologic complications after regional anesthesia is a complex process and may result from an interaction of host, agent, and environmental risk factors. The purpose of this systematic review was examine the qualitative evidence relating to various risk factors implicated in neurologic dysfunction after peripheral nerve block (PNB). The MEDLINE, OVID, and EMBASE databases were primary sources for literature. Cochrane, LILACS, DARE, IndMed, ERIC, NHS, and HTA via Centre for Reviews and Dissemination (CRD; York University) databases were searched for additional unique results...
February 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28067703/anesthesia-for-ambulatory-pediatric-surgery-in-sub-saharan-africa-a-pilot-study-in-burkina-faso
#17
Yvette B Kabré, Idriss S S Traoré, Flavien A R Kaboré, Bertille Ki, Alain I Traoré, Isso Ouédraogo, Emile Bandré, Albert Wandaogo, Nazinigouba Ouédraogo
BACKGROUND: Long surgical wait times and limited hospital capacity are common obstacles to surgical care in many countries in Sub-Saharan Africa (SSA). Introducing ambulatory surgery might contribute to a solution to these problems. The purpose of this study was to evaluate the safety and feasibility of introducing ambulatory surgery into a pediatric hospital in SSA. METHODS: This is a cross-sectional descriptive study that took place over 6 months. It includes all patients assigned to undergo ambulatory surgery in the Pediatric University Hospital in Ouagadougou, Burkina Faso...
February 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28059804/bupivacaine-increases-the-rate-of%C3%A2-motoneuron-death-following-peripheral%C3%A2-nerve-injury
#18
Susanna C Byram, Scott W Byram, Nicholas M Miller, Keith N Fargo
BACKGROUND: Appropriate management of pain after an injury or surgical procedure has been shown to improve patient outcomes. While infrequent, nerve damage resulting from regional anesthesia can be devastating, however the mechanism remains unknown. Local anesthetics are neurotoxic yet are frequently applied to sites where peripheral nerves are regenerating. Therefore, understanding their effects on injured and growing neurons may have important implications for clinical practice. OBJECTIVE: The purpose of this study was to determine if local anesthetics exacerbate the rate of motoneuron death following axotomy...
January 4, 2017: Restorative Neurology and Neuroscience
https://www.readbyqxmd.com/read/28059686/the-role-of-spinal-thrombin-through-protease-activated-receptor-1-in-hyperalgesia-after-neural-injury
#19
Jenell R Smith, Beth A Winkelstein
OBJECTIVE Painful neuropathic injuries induce blood-spinal cord barrier (BSCB) breakdown, allowing pro-inflammatory serum molecules to cross the BSCB, which contributes to nociception. The goal of these studies was to determine whether the blood-borne serine protease thrombin also crosses a permeable BSCB, contributing to nociception through its activation of protease-activated receptor-1 (PAR1). METHODS A 15-minute C-7 nerve root compression, which induces BSCB breakdown and painful behaviors by Day 1, was administered in the rat (n = 10); sham operation (n = 11) and a 3-minute compression (n = 10) that does not induce sensitivity were administered as controls...
January 6, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28035645/reflex-arc-of-the-teeth-clenching-induced-pressor-response-in-rats
#20
Ichiro Shoji, Takehito Kemuriyama, Megumi Tandai-Hiruma, Satoshi Maruyama, Akimasa Tashiro, Hidetaka Yokoe, Yasuhiro Nishida
Although "teeth clenching" induces pressor response, the reflex tracts of the response are unknown. In this study, dantrolene administration inhibited teeth clenching generated by electrical stimulation of the masseter muscles and completely abolished the pressor response. In addition, trigeminal ganglion block or hexamethonium administration completely abolished the pressor response. Local anesthesia of molar regions significantly reduced the pressor response to 27 ± 10%. Gadolinium (mechanoreceptor blocker of group III muscle afferents) entrapment in masticatory muscles also significantly reduced the pressor response to 62 ± 7%...
December 29, 2016: Journal of Physiological Sciences: JPS
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