keyword
MENU ▼
Read by QxMD icon Read
search

Nerve transfer

keyword
https://www.readbyqxmd.com/read/29664415/model-based-optimal-multipolar-stimulation-without-a-priori-knowledge-of-nerve-structure-application-to-vagus-nerve-stimulation
#1
Melissa Dali, Olivier Rossel, David Andreu, Laure Laporte, Alfredo Hernandez, Jeremy Laforet, Eloi Marijon, Albert Hagège, Maureen Clerc, Christine Henry, David Guiraud
OBJECTIVE: Multipolar cuff electrode can selectively stimulate areas of peripheral nerves and therefore enable to control independent functions. However, the branching and fascicularization are known for a limited set of nerves and the specific organization remains subject-dependent. This paper presents a general modeling and optimization methods in the context of multipolar stimulation using a cuff electrode without a priori knowledge of the nerve structure. Vagus nerve stimulation experiments based on the optimization results were then investigated...
April 17, 2018: Journal of Neural Engineering
https://www.readbyqxmd.com/read/29658089/electrophysiological-properties-of-rat-vestibular-labyrinth-and-their-effect-on-parameters-of-transmitted-voltage-pulses
#2
V P Demkin, V V Udut, P P Shchetinin, M V Svetlik, S V Mel'nichuk, A P Shchetinina, M O Pleshkov, D N Starkov, O V Demkin, H Kingma
We propose a new approach to optimization of electrical stimulation of the vestibular nerve and improving the transfer function of vestibular implant. A mathematical model of the vestibular organ is developed based on its anatomy, the model premises, 3D-analysis of MRI and CT images, and mathematical description of physical processes underlying propagation of alternating electric current across the tissues of vestibular labyrinth. This approach was tested in vitro on the rat vestibular apparatus and had been examined anatomically prior to the development of its mathematical model and equivalent electrical circuit...
April 16, 2018: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/29656325/dosing-of-the-second-generation-cryoballoon-using-acute-time-to-pulmonary-vein-isolation-as-an-indicator-of-durable-ablation-in-a-canine-model
#3
Wilber Su, Nicolas Coulombe, Nicole Kirchhof, Erin Grassl, Dan Wittenberger
BACKGROUND: Rigid time-based dosing protocol(s) currently used in the clinic for cryoballoon ablation of atrial fibrillation may be inadequate to guide the circumferential and transmural cryothermal energy transfer across the pulmonary vein (PV) and may result in injury to collateral tissues or electrical gaps between the PV and left atrium (LA). OBJECTIVE: A physiologic endpoint (e.g., acute time-to-PV isolation a.k.a. time-to-effect; TTE) may be effective in the determination of a transmural lesion formation and may allow for individualized ablation dosing across each PV...
April 14, 2018: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/29652036/clinical-effects-of-selective-drug-regulating-vagus-nerve-signal-pathway-in-vagally-mediated-atrial-fibrillation
#4
Xue Lou, Yanmei Lu, Baopeng Tang, Xianhui Zhou
BACKGROUND The cardiac autonomic nervous system plays a crucial role in genesis and development of atrial fibrillation (AF) through the G protein signal transduction pathway. Therefore, intervening in the G protein signal transduction pathway may be a new "selective drug" method to regulate autonomic nerve activity to prevent vagally-mediated AF. MATERIAL AND METHODS Seventeen adult beagles were randomized into 3 groups: shame-operation control group (group A, n=5), empty vector gene control group (group B, n=6), and Gαi2ctp gene experimental group (group C, n=6)...
April 13, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29650376/trapezius-muscle-transfer-for-restoration-of-elbow-extension-in-a-traumatic-brachial-plexus-injury
#5
Hamza M Alrabai, Martin G Gesheff, Ahmed I Hammouda, Janet D Conway
Voluntary elbow extension is essential for optimal upper limb positioning required for daily living activities, particularly above-shoulder maneuvers. The authors present a case of traumatic brachial plexus injury in which paralysis of the musculature selectively supplied by the posterior cord was based on magnetic resonance imaging and nerve conduction studies. An attempt at a radial nerve graft at another center was not effective. Ipsilateral hand function improved after multiple local tendon transfers were performed...
April 9, 2018: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29649064/incomplete-facial-paralysis-the-use-of-the-ipsilateral-residual-facial-nerve-as-a-donor-nerve-for-facial-reanimation
#6
Eyal Gur, Ron M Zuker, Arik Zaretski, David Leshem, Yoav Barnea, Ehud Arad, Ravit Yanko, Beni Meilik, Daniel J Kedar, Ehud Fliss
BACKGROUND: The reconstructive approach for incomplete facial paralysis is not yet determined. In this article we present a new surgical approach for patients with incomplete facial paralysis in which residual, ineffective movement is detected pre-operatively in the ipsilateral bucco-zygomatic territory of the paretic facial nerve. METHODS: Sixteen patients with incomplete facial paralysis were found eligible for the procedure and underwent one-stage facial reanimation by the senior author (E...
March 29, 2018: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29644315/limb-salvage-and-reconstruction-following-a-zebra-attack
#7
Jacob T Carlson, James C Yuen, Matthew R Smeds
Animal bites are fairly rare events but can cause devastating traumatic injuries to the victim. In addition to the soft tissue, vascular, and orthopedic trauma inflicted by these occurrences, bite injuries also have the potential to introduce an inoculum of microbes, which may progress to an infection if not treated properly and expeditiously. We present the case of a healthy male who sustained multiple bite wounds from a domestic zebra to his left upper extremity. This attack caused severe damage, including devascularization of the arm at the brachial artery, disruption of the distal biceps and brachialis, stripping of the forearm nerves, and shearing of the overlying soft tissue...
June 2017: Trauma Case Reports
https://www.readbyqxmd.com/read/29642930/neuropeptide-regulation-of-adaptive-immunity-in-the-tibia-fracture-model-of-complex-regional-pain-syndrome
#8
Wen-Wu Li, Tian-Zhi Guo, Xiaoyou Shi, Frank Birklein, Tanja Schlereth, Wade S Kingery, J David Clark
BACKGROUND: Both dysfunctional neuropeptide signaling and immune system activation are characteristic of complex regional pain syndrome (CRPS). Unknown is whether substance P (SP) or calcitonin gene-related peptide (CGRP) support autoantibody production and, consequently, nociceptive sensitization. METHODS: These experiments involved the use of a well-characterized tibia fracture model of CRPS. Mice deficient in SP expression (Tac1-/- ) and CGRP signaling (RAMP1-/- ) were used to probe the neuropeptide dependence of post-fracture sensitization and antibody production...
April 11, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29629581/vascularized-fibular-epiphyseal-transfer-for-proximal-humeral-reconstruction-in-children-with-a-primary-sarcoma-of-bone
#9
J D Stevenson, R Doxey, A Abudu, M Parry, S Evans, F Peart, L Jeys
Aims Preserving growth following limb-salvage surgery of the upper limb in children remains a challenge. Vascularized autografts may provide rapid biological incorporation with the potential for growth and longevity. In this study, we aimed to describe the outcomes following proximal humeral reconstruction with a vascularized fibular epiphyseal transfer in children with a primary sarcoma of bone. We also aimed to quantify the hypertrophy of the graft and the annual growth, and to determine the functional outcomes of the neoglenofibular joint...
April 1, 2018: Bone & Joint Journal
https://www.readbyqxmd.com/read/29628319/facial-nerve-palsy-and-laryngospasm-as-a-complication-of-local-anaesthesia-during-adenotonsillectomy
#10
Michał Lubszczyk, Anna Łuczyńska-Sopel, Dariusz Polaczkiewicz
Tonsil surgeries are the most frequently performed surgical procedures in ENT departments. We would like to present the case of a 5-year-old patient who suffered from unilateral peripheral facial nerve palsy and laryngeal spasm following adenotonsillectomy. Paresis was observed immediately after the transfer of the patient to the postoperative room. The activity of facial muscles was restored within 2 hours from the beginning of the surgery. We assume that this was the direct effect of an anaesthetic on the extracranial processes of the facial nerve...
April 5, 2018: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/29627214/digital-technology-for-performing-a-nasopalatine-and-greater-palatine-nerve-block-with-a-modified-implant-surgical-guide-a-technique-article
#11
Ankur Dahiya, Antoanela Garbacea, Mathew T Kattadiyil, Abdulaziz AlHelal
This article describes a computer-aided design and computer-aided manufacturing (CAD-CAM) technique to perform a precise nerve block of the nasopalatine and greater palatine nerves by using an implant surgical guide. The technique uses additional guide anchor pins planned and positioned for specific anatomic landmarks during guided implant surgical guide planning. A relief modification virtually designed on the intaglio surface of the surgical guide allows for palatal soft tissue distension following administration of local anesthetic...
April 5, 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29625866/mixed-facial-reanimation-technique-to-treat-paralysis-in-medium-term-cases
#12
Federico Biglioli, Federico Bolognesi, Fabiana Allevi, Dimitri Rabbiosi, Silvia Cupello, Antonino Previtera, Alessandro Lozza, Valeria M A Battista, Claudio Marchetti
Recent facial paralyses, in which fibrillations of the mimetic muscles are still detectable by electromyography (EMG), allow facial reanimation based on giving new neural stimuli to musculature. However, if more time has elapsed, mimetic muscles can undergo irreversible atrophy, and providing a new neural stimulus is simply not effective. In these cases function is provided by transferring free flaps into the face or transposing masticatory muscles to reinstitute major movements, such as eyelid closure and smiling...
March 14, 2018: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29623932/evaluation-of-nerve-transfer-options-for-treating-total-brachial-plexus-avulsion-injury-a-retrospective-study-of-73-participants
#13
Kai-Ming Gao, Jing-Jing Hu, Jie Lao, Xin Zhao
Despite recent great progress in diagnosis and microsurgical repair, the prognosis in total brachial plexus-avulsion injury remains unfavorable. Insufficient number of donors and unreasonable use of donor nerves might be key factors. To identify an optimal treatment strategy for this condition, we conducted a retrospective review. Seventy-three patients with total brachial plexus avulsion injury were followed up for an average of 7.3 years. Our analysis demonstrated no significant difference in elbow-flexion recovery between phrenic nerve-transfer (25 cases), phrenic nerve-graft (19 cases), intercostal nerve (17 cases), or contralateral C7 -transfer (12 cases) groups...
March 2018: Neural Regeneration Research
https://www.readbyqxmd.com/read/29618095/case-report-double-oberlin-nerve-transfer-to-restore-elbow-flexion-following-c5-c6-avulsion-injury
#14
Michael J Moses, Amoz Z Dai, Dylan T Lowe, Alice Chu, Themistocles S Protopsaltis
BACKGROUND AND IMPORTANCE: The use of nerve transfers to restore nerve function following traumatic avulsion injuries has been described, though there is still a paucity in the literature documenting technique and long-term outcomes for these procedures. The double Oberlin nerve transfer involves transferring fascicles from the median and ulnar nerves to the musculocutaneous nerve to restore elbow flexion in patients with a C5-C6 avulsion injury. The purpose of this case report is to present our indications and technique for a double Oberlin transfer in addition to exhibiting video footage at follow-up time points documenting the incremental improvement in elbow flexion following the injury...
April 2, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29615986/whole-genome-sequencing-and-multiplex-qpcr-methods-to-identify-campylobacter-jejuni-encoding-cst-ii-or-cst-iii-sialyltransferase
#15
Jason M Neal-McKinney, Kun C Liu, Karen C Jinneman, Wen-Hsin Wu, Daniel H Rice
Campylobacter jejuni causes more than 2 million cases of gastroenteritis annually in the United States, and is also linked to the autoimmune sequelae Guillan-Barre syndrome (GBS). GBS often results in flaccid paralysis, as the myelin sheaths of nerve cells are degraded by the adaptive immune response. Certain strains of C. jejuni modify their lipooligosaccharide (LOS) with the addition of neuraminic acid, resulting in LOS moieties that are structurally similar to gangliosides present on nerve cells. This can trigger GBS in a susceptible host, as antibodies generated against C...
2018: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29613866/outcomes-following-peripheral-nerve-transfers-for-treatment-of-non-obstetric-brachial-plexus-upper-extremity-neuropathy
#16
Jacob R Rinkinen, Aviram M Giladi, Matthew L Iorio
No abstract text is available yet for this article.
April 3, 2018: JBJS Reviews
https://www.readbyqxmd.com/read/29605951/future-perspectives-in-the-management-of-nerve-injuries
#17
Susan E Mackinnon
AIM:  The author presents a solicited "white paper" outlining her perspective on the role of nerve transfers in the management of nerve injuries. METHODS:  PubMed/MEDLINE and EMBASE databases were evaluated to compare nerve graft and nerve transfer. An evaluation of the scientific literature by review of index articles was also performed to compare the number of overall clinical publications of nerve repair, nerve graft, and nerve transfer. Finally, a survey regarding the prevalence of nerve transfer surgery was administrated to the World Society of Reconstructive Microsurgery (WSRM) results...
April 1, 2018: Journal of Reconstructive Microsurgery
https://www.readbyqxmd.com/read/29605950/distal-nerve-transfer-perspective-of-reconstructive-microsurgery
#18
Kazuteru Doi
Recent articles have strongly emphasized the superiority of distal nerve transfers despite indefinite assessment. I would like to introduce the problems associated with functional evaluation following nerve transfers.
April 1, 2018: Journal of Reconstructive Microsurgery
https://www.readbyqxmd.com/read/29595736/cranial-nerve-coactivation-and-implication-for-nerve-transfers-to-the-facial-nerve
#19
David Jensson, Sara Enghag, Nina Bylund, Lars Jonsson, Johan Wikström, Margareta Grindlund, Roland Flink, Andres Rodriguez-Lorenzo
In reanimation surgery, effortless smile can be achieved by a nonfacial donor nerve. The underlying mechanisms for this smile development, and which is the best nonfacial neurotizer, need further clarification. The aim of the present study was therefore to further explore the natural coactivation between facial mimic muscles and muscles innervated by the most common donor nerves used in smile reanimation. The study was conducted in 10 healthy adults. Correlation between voluntary facial muscle movements and simultaneous electromyographic activity in muscles innervated by the masseter, hypoglossal, and spinal accessory nerves was assessed...
April 2018: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29595730/recovery-of-elbow-flexion-after-nerve-reconstruction-versus-free-functional-muscle-transfer-for-late-traumatic-brachial-plexus-palsy-a-systematic-review
#20
Don Hoang, Vivi W Chen, Mitchel Seruya
BACKGROUND: In late presentation of brachial plexus trauma, it is unclear whether donor nerves should be devoted to nerve reconstruction or reserved for free functional muscle transfer. The authors systematically reviewed recovery of elbow flexion after nerve reconstruction versus free functional muscle transfer for late, traumatic brachial plexus palsy. METHODS: A systematic review was performed using the PubMed, Embase, and Cochrane databases to identify all cases of traumatic brachial plexus palsy in patients aged 18 years or older...
April 2018: Plastic and Reconstructive Surgery
keyword
keyword
13026
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"