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High frequency spinal cord stimulation

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https://www.readbyqxmd.com/read/28938297/new-advancements-in-spinal-cord-stimulation-for-chronic-pain-management
#1
Jijun Xu, Aijun Liu, Jianguo Cheng
PURPOSE OF REVIEW: To update the recent development of spinal cord stimulation (SCS) technology in the management of chronic pain. RECENT FINDINGS: Efficacy of SCS therapy has been significantly improved by the recent development of high frequency (HF-10 kHz) stimulation, burst stimulation, and dorsal root ganglion (DRG) stimulation. A few latest SCS modalities are in clinical trial. New approaches to guide lead placement and advances in surgical lead are introduced...
September 21, 2017: Current Opinion in Anaesthesiology
https://www.readbyqxmd.com/read/28935824/effects-of-expiratory-muscle-activation-via-high-frequency-spinal-cord-stimulation
#2
Krzysztof E Kowalski, Jaroslaw Richard Romaniuk, Tomasz Kowalski, Anthony F DiMarco
In persons with spinal cord injury, lower thoracic low frequency spinal cord stimulation (LF-SCS, 50Hz,15mA) is a useful method to restore an effective cough. Unfortunately, the high stimulus amplitude requirements and potential activation of pain fibers significantly limits this application in persons with intact sensation. In this study, the mechanism of the expiratory muscle activation, via high frequency SCS (HF-SCS;500Hz,1mA) was evaluated in dogs. In group one, the effects of electrode placement on airway pressure generation (P) was evaluated...
September 21, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28872930/inconsistence-between-number-and-function-of-autoreactive-t-cells-in-the-course-of-experimental-autoimmune-encephalomyelitis
#3
Xin Wan, Weiya Pei, Yiming Zhang, Lei Zhang, Khawar Ali Shahzad, Tao Xu, Chuanlai Shen
BACKGROUND: Mouse experimental autoimmune encephalomyelitis (EAE) is widely used model of multiple sclerosis (MS). The role of autoreactive CD4(+) and CD8(+) T cells in the development of mouse EAE has been demonstrated. However, little information is available about the relation between the frequency and reactivity of myelin antigen-reactive CD4(+) and CD8(+) T cells in secondary lymphoid organs and their relevance with the inflammation and pathological lesion of CNS during the course of EAE mouse model...
September 5, 2017: Immunological Investigations
https://www.readbyqxmd.com/read/28834092/therapy-related-explants-after-spinal-cord-stimulation-results-of-an-international-retrospective-chart-review-study
#4
Jean-Pierre Van Buyten, Frank Wille, Iris Smet, Carin Wensing, Jennifer Breel, Edward Karst, Marieke Devos, Katja Pöggel-Krämer, Jan Vesper
OBJECTIVES: Clinical trials of spinal cord stimulation (SCS) have largely focused on conversion from trial to permanent SCS and the first years after implant. This study evaluates the association of type of SCS and patient characteristics with longer-term therapy-related explants. MATERIALS AND METHODS: Implanting centers in three European countries conducted a retrospective chart review of SCS systems implanted from 2010 to 2013. Ethics approval or waiver was obtained, and informed consent was not required...
August 18, 2017: Neuromodulation: Journal of the International Neuromodulation Society
https://www.readbyqxmd.com/read/28809704/kilohertz-electrical-stimulation-nerve-conduction-block-effects-of-electrode-material
#5
Yogi A Patel, Brian S Kim, Robert J Butera
Kilohertz electrical stimulation (KES) has enabled a novel new paradigm for spinal cord and peripheral nerve stimulation to treat a variety of neurological diseases. KES can excite or inhibit nerve activity and is used in many clinical devices today. However, the impact of different electrode materials on the efficacy of KES is unknown. We investigated the effect of different electrode materials and their respective charge injection mechanisms on KES nerve block thresholds using 20 and 40 kHz current-controlled sinusoidal KES waveforms...
August 10, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28762503/mechanomyography-based-wearable-monitor-of-quasi-isometric-muscle-fatigue-for-motor-neural-prostheses
#6
Eddy Krueger, Lana Popović-Maneski, Percy Nohama
A motor neural prosthesis based on surface functional electrical stimulation (sFES) can restore functional movement (e.g., standing, walking) in patients with a spinal cord injury (SCI). sFES generates muscle contractions in antigravity muscles and allows balance-assisted standing. This induced standing has several benefits, such as improved cardiovascular function, decreased incidence of urinary infections, reduced joint contractures, and muscle atrophy. The duration of sFES assisted standing is limited due to the quick onset of muscle fatigue...
August 1, 2017: Artificial Organs
https://www.readbyqxmd.com/read/28716590/lumbar-muscle-inflammation-alters-spinally-mediated-locomotor-recovery-induced-by-training-in-a-mouse-model-of-complete-spinal-cord-injury
#7
Renaud Jeffrey-Gauthier, Mathieu Piché, Hugues Leblond
Locomotor networks after spinal cord injury (SCI) are shaped by training-activated proprioceptive and cutaneous inputs. Nociception from injured tissues may alter these changes but has largely been overlooked. The objective of the present study was to ascertain whether lumbar muscle inflammation hinders locomotion recovery in a mouse model of complete SCI. Lower limb kinematics during treadmill training was assessed before and after complete SCI at T8 (2, 7, 14, 21 and 28days post-injury). Locomotor recovery was compared in 4 groups of CD1 mice: control spinal mice; spinal mice with daily locomotor training; spinal mice with lumbar muscle inflammation (Complete Freund's Adjuvant (CFA) injection); and spinal mice with locomotor training and CFA...
July 15, 2017: Neuroscience
https://www.readbyqxmd.com/read/28615341/high-frequency-epidural-stimulation-across-the-respiratory-cycle-evokes-phrenic-short-term-potentiation-after-incomplete-cervical-spinal-cord-injury
#8
Elisa J Gonzalez-Rothi, Kristi A Streeter, Marie H Hanna, Anna C Stamas, Paul J Reier, David M Baekey, David D Fuller
C2 spinal hemilesion (C2Hx) paralyzes the ipsilateral diaphragm, but recovery is possible through activation of "crossed spinal" synaptic inputs to ipsilateral phrenic motoneurons. We tested the hypothesis that high frequency epidural stimulation (HF-ES) would potentiate ipsilateral phrenic output after subacute and chronic C2Hx. HF-ES (300 Hz) was applied to the ventrolateral C4 or T2 spinal cord ipsilateral to C2Hx in anesthetized and mechanically ventilated adult rats. Stimulus duration was 60-sec and currents ranged from 100-1000 µA...
June 14, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28568898/conventional-and-novel-spinal-stimulation-algorithms-hypothetical-mechanisms-of-action-and-comments-on-outcomes
#9
REVIEW
Bengt Linderoth, Robert D Foreman
OBJECTIVE: Spinal cord stimulation (SCS) emerged as a direct clinical spin-off from the Gate Control Theory from 1965. Over the last decade, several new modes of SCS have appeared. This review discusses these novel techniques and their hypothetical mechanisms of action. MATERIAL AND METHODS: A recent literature search on SCS coupled with the most recent data from poster presentations and congress lectures have been used to illustrate new hypothetical ways of modulating pain...
August 2017: Neuromodulation: Journal of the International Neuromodulation Society
https://www.readbyqxmd.com/read/28544182/burst-or-high-frequency-10-khz-spinal-cord-stimulation-in-failed-back-surgery-syndrome-patients-with-predominant-back-pain-one-year-comparative-data
#10
Sajjad Muhammad, Sandra Roeske, Shafqat Rasul Chaudhry, Thomas Mehari Kinfe
OBJECTIVES: Burst and 10 kHz spinal cord stimulation (SCS) demonstrated improvement for failed back surgery syndrome (FBSS) with predominant, refractory back pain. Here, we report the long-term follow-up of a previously published study comparing the safety and efficacy of burst vs. 10 kHz SCS for predominant back pain (70% of global pain) of FBSS patients. METHODS: This comparative, observational study extended the follow-up period up to 20 months evaluating both SCS modalities...
May 24, 2017: Neuromodulation: Journal of the International Neuromodulation Society
https://www.readbyqxmd.com/read/28505029/treatment-options-for-failed-back-surgery-syndrome-patients-with-refractory-chronic-pain-an-evidence-based-approach
#11
Kasra Amirdelfan, Lynn Webster, Lawrence Poree, Vishad Sukul, Porter McRoberts
STUDY DESIGN: A significant number of lumbar postsurgical patients continue to suffer persistent pain and limited function and are termed to have "Failed back surgery syndrome" (FBSS). This review evaluates clinical trial data for the treatment of FBSS patients. OBJECTIVE: Using an evidence-based approach to evaluate FBSS treatments will assist clinicians in choosing the most effective options for FBSS patients. Furthermore, reducing the utilization of less effective therapies may result in substantial financial savings for this patient population...
July 15, 2017: Spine
https://www.readbyqxmd.com/read/28498725/evaluation-of-abbott-s-burstdr-stimulation-device-for-the-treatment-of-chronic-pain
#12
Timothy R Deer, Lucas W Campos, Jason E Pope
Burst stimulation, as described by DeRidder, is a novel waveform made up of closely spaced, high-frequency electrical impulses delivered in packets, which are followed by a quiescent period or interburst interval. Electrically generated burst waveforms were initially designed to treat neural pathology in the auditory cortex and were later applied to the spinal cord through spinal cord stimulation (SCS) devices to treat chronic pain states. When Burst stimulation is applied to the spinal cord, the impulses travel to the thalamus and then diverge, targeting both the somatosensory cortex and the limbic system where they treat both the sensory, affective and attentional components of neuropathic pain...
June 2017: Expert Review of Medical Devices
https://www.readbyqxmd.com/read/28419784/four-extremity-neurostimulation-using-two-cervical-octapolar-leads-and-high-frequency-of-10-khz
#13
Shervin Harandi, Leonardo Kapural
OBJECTIVES AND METHODS: A few published reports describe successful clinical use of low-frequency spinal cord stimulation (SCS) in the cervical spine resulting in bilateral upper and lower extremity pain relief. A major side-effect when using this modality of SCS is the uneven intensity of paresthesias, which are frequently excessive in upper extremities while attempting to achieve optimal paresthesia coverage in all 4 extremities. RESULTS AND CONCLUSIONS: Here we describe a successful case of high-frequency SCS at 10 kHz where profound control of neuropathic pain of all 4 extremities was achieved without the complication of paresthesias...
April 18, 2017: Pain Practice: the Official Journal of World Institute of Pain
https://www.readbyqxmd.com/read/28403681/atrophy-ultra-structural-disorders-severe-atrophy-and-degeneration-of-denervated-human-muscle-in-sci-and-aging-implications-for-their-recovery-by-functional-electrical-stimulation-updated-2017
#14
Helmut Kern, Cristian Hofer, Stefan Loefler, Sandra Zampieri, Paolo Gargiulo, Alfonc Baba, Andrea Marcante, Francesco Piccione, Amber Pond, Ugo Carraro
OBJECTIVES: Long-term lower motor neuron denervation of skeletal muscle is known to result in degeneration of muscle with replacement by adipose and fibrotic tissues. However, long-term survival of a subset of skeletal myofibers also occurs. METHODS: We performed transverse and longitudinal studies of patients with spinal cord injury (SCI), patients specifically complete Conus and Cauda Equina Syndrome and also of active and sedentary seniors which included analyses of muscle biopsies from the quadriceps m...
April 13, 2017: Neurological Research
https://www.readbyqxmd.com/read/28393429/lack-of-analgesic-synergy-of-the-cholecystokinin-receptor-antagonist-proglumide-and-spinal-cord-stimulation-for-the-treatment-of-neuropathic-pain-in-rats
#15
Shinsuke Inoue, Lisa M Johanek, Kathleen A Sluka
OBJECTIVE: Neuropathic pain is difficult to manage and treat. Spinal cord stimulation (SCS) has become an established procedure for treating chronic neuropathic pain that is refractory to pharmacological therapy. In order to achieve better analgesia, a number of studies have evaluated the effectiveness of combining drug therapy with SCS. Cholecystokinin antagonists, such as proglumide, enhance the analgesic efficacy of endogenous opioids in animal models of pain. We previously reported that both systemic and spinal administration of proglumide enhances analgesia produced by both low- and high-frequency transcutaneous electrical nerve stimulation (TENS)...
April 10, 2017: Neuromodulation: Journal of the International Neuromodulation Society
https://www.readbyqxmd.com/read/28371858/high-frequency-spinal-cord-stimulation-at-10%C3%A2-khz-for-the-treatment-of-chronic-neuropathic-pain-after-a-ii-iii-degree-burn
#16
Karl Steinbach, Horst Bettstetter, Carolina Link
No abstract text is available yet for this article.
September 1, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28370471/motor-deficits-and-beta-oscillations-are-dissociable-in-an-alpha-synuclein-model-of-parkinson-s-disease
#17
Ivani Brys, Jessica Nunes, Romulo Fuentes
Parkinson's disease (PD) is a neurodegenerative disorder characterised by progressive motor symptoms resulting from chronic loss of dopaminergic neurons in the nigrostriatal pathway. The over expression of the protein alpha-synuclein in the substantia nigra has been used to induce progressive dopaminergic neuronal loss and to reproduce key histopathological and temporal features of PD in animal models. However, the neurophysiological aspects of the alpha-synuclein PD model have been poorly characterised. Hereby, we performed chronic in vivo electrophysiological recordings in the corticostriatal circuit of rats injected with viral vector to over express alpha-synuclein in the right substantia nigra...
August 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28368981/evidence-gaps-in-the-use-of-spinal-cord-stimulation-for-treating-chronic-spine-conditions
#18
David A Provenzano, Kasra Amirdelfan, Leonardo Kapural, B Todd Sitzman
STUDY DESIGN: A review of literature. OBJECTIVE: The aim of this study was to define and explore the current evidence gaps in the use of spinal cord stimulation (SCS) for treating chronic spine conditions. SUMMARY OF BACKGROUND DATA: Although over the last 40 years SCS therapy has undergone significant technological advancements, evidence gaps still exist. METHODS: A literature review was conducted to define current evidence gaps for the use of SCS...
July 15, 2017: Spine
https://www.readbyqxmd.com/read/28368090/bypass-surgery-for-chronic-lower-limb-ischaemia
#19
REVIEW
George A Antoniou, George S Georgiadis, Stavros A Antoniou, Ragai R Makar, Jonathan D Smout, Francesco Torella
BACKGROUND: Bypass surgery is one of the mainstay treatments for patients with critical lower limb ischaemia (CLI). This is the second update of the review first published in 2000. OBJECTIVES: To assess the effects of bypass surgery in patients with chronic lower limb ischaemia. SEARCH METHODS: For this update, the Cochrane Vascular Group searched its trials register (last searched October 2016) and the Cochrane Central Register of Controlled Trials (CENTRAL) in the Cochrane Library (last searched Issue 9, 2016)...
April 3, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28362893/letter-comparison-of-10-khz-high-frequency-and-traditional-low-frequency-spinal-cord-stimulation-for-the-treatment-of-chronic-back-and-leg-pain-24-month-results-from-a-multicenter-randomized-controlled-pivotal-trial
#20
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