scholarly journals Laser evoked potentials recover gradually when using dorsal root ganglion stimulation and this influences nociceptive pathways in neuropathic pain patients

Pain Practice ◽  
2021 ◽  
Author(s):  
Matthias Hubert Morgalla ◽  
Yi Zhang ◽  
Marcos de Barros Filho ◽  
Guilherme Lepski ◽  
Bankim Subhash Chander
Keyword(s):  
Neuropathic Pain ◽  
Dorsal Root Ganglion ◽  
Evoked Potentials ◽  
Dorsal Root ◽  
Laser Evoked Potentials ◽  
Nociceptive Pathways ◽  
Pain Patients

scholarly journals Restoration of Laser Evoked Potentials (LEP) in Patients Receiving Dorsal Root Ganglion (DRG) Stimulation

2018 ◽  
Author(s):  
Guilherme Lepski ◽  
Marcos Fortunato ◽  
Bankim Chander ◽  
Matthias Morgalla ◽  
Marcos Tatagiba
Keyword(s):  
Dorsal Root Ganglion ◽  
Evoked Potentials ◽  
Dorsal Root ◽  
Laser Evoked Potentials

scholarly journals Quantitative Sensory Testing of Spinal Cord and Dorsal Root Ganglion Stimulation in Chronic Pain Patients

2021 ◽  
Author(s):  
Vishwanath Sankarasubramanian ◽  
Srinivas Chiravuri ◽  
Ehsan Mirzakhalili ◽  
Carlos J. Anaya ◽  
John Ryan Scott ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Chronic Pain ◽  
Dorsal Root Ganglion ◽  
Dorsal Root ◽  
Quantitative Sensory Testing ◽  
Sensory Testing ◽  
Chronic Pain Patients ◽  
Pain Patients

Role of TRPV4-P2X7 Pathway in Neuropathic Pain in Rats with Chronic Compression of the Dorsal Root Ganglion

2021 ◽  
Author(s):  
Xiaohua Fan ◽  
Chuanwei Wang ◽  
Junting Han ◽  
Xinli Ding ◽  
Shaocan Tang ◽  
...  
Keyword(s):  
Neuropathic Pain ◽  
Dorsal Root Ganglion ◽  
Dorsal Root

A Prospective Analysis of Neuromonitoring for Confirmation of Lead Placement in Dorsal Root Ganglion Stimulation

2017 ◽  
Vol 14 (6) ◽  
pp. 654-660 ◽  
Author(s):  
Steven M Falowski ◽  
Andreas Dianna
Keyword(s):  
Neuropathic Pain ◽  
Dorsal Root Ganglion ◽  
Dorsal Root ◽  
Evoked Potential ◽  
Somatosensory Evoked Potential ◽  
Prospective Analysis ◽  
Awake Patient ◽  
Chronic Neuropathic Pain ◽  
Lead Placement

Abstract BACKGROUND Dorsal root ganglion stimulation is a neuromodulation therapy used for chronic neuropathic pain. Typically, patients are awakened intraoperatively to confirm adequate placement. OBJECTIVE To determine whether neuromonitoring can confirm placement in an asleep patient. METHODS This is a prospective analysis of 12 leads placed in 6 patients. Lead confirmation was confirmed by awake intraoperative testing, as well as asleep testing utilizing neuromonitoring. Patients were used as their own control. Sensory and motor thresholds for each patient with awake and asleep neuromonitoring testing were recorded. Intraoperative impedance and postoperative programming were also recorded. RESULTS In each patient, paresthesias were generated prior to motor contractions in the awake patient. For each patient, somatosensory evoked potential responses were present after lowering below the dropout threshold of electromyogram responses with neuromonitoring. There were varying degrees of separation in the thresholds that did not appear to be consistent across level or diagnosis. Smaller degrees of separation between thresholds during awake testing also held true in the asleep patient. This was further confirmed with postoperative programming. Impedances did not alter the separation in thresholds or amount of stimulation required for responses. One patient was combative during awake testing, and therefore motor thresholds were not obtained. This same patient was determined to have a ventral placement, confirmed with awake and asleep neuromonitoring testing. CONCLUSION This series demonstrates that the proposed neuromonitoring protocol can be used in an asleep patient to assure proper positioning of the dorsal root ganglion electrode in the dorsal foramen by generating somatosensory evoked potential responses in the absence of electromyogram responses.

scholarly journals Implanting iodine-125 seeds into rat dorsal root ganglion for neuropathic pain: neuronal microdamage without impacting hind limb motion

2014 ◽  
Vol 9 (12) ◽  
pp. 1204
Author(s):  
Wenting Ma ◽  
Ling Jiao ◽  
Tengda Zhang ◽  
Huixing Wang ◽  
Wenyi Zhang ◽  
...  
Keyword(s):  
Neuropathic Pain ◽  
Dorsal Root Ganglion ◽  
Dorsal Root ◽  
Hind Limb ◽  
Iodine 125
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