37. H-reflex and F-wave of the patients of spinal cord injury before and after intrathecal baclofen injection

2010 ◽  
Vol 121 (7) ◽  
pp. e27
Author(s):  
Katsuhiro Mizuno ◽  
Kazushige Hasegawa ◽  
Osamu Uemura ◽  
Daisuke Matsuura ◽  
Masako Katahira ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Spinal Cord Injury ◽  
Intrathecal Baclofen ◽  
H Reflex ◽  
Cord Injury ◽  
Before And After ◽  
F Wave

INTRATHECAL BACLOFEN PUMP FOR SPASTIC HYPERTONIA FOLLOWING PENETRATING BRAIN INJURY

2021 ◽  
pp. 76-78
Author(s):  
Anand Sharma ◽  
Yashbir Dewan
Keyword(s):  
Spinal Cord ◽  
Spinal Cord Injury ◽  
Brain Injury ◽  
Intrathecal Baclofen ◽  
Gunshot Injury ◽  
Review Of Literature ◽  
Penetrating Brain Injury ◽  
Severe Spasticity ◽  
Cord Injury

Management of severe spasticity following penetrating brain injury is often a difcult problem. Orally administered medications generally offer limited benets. Intrathecally administered baclofen has been shown to be effective in patients with spasticity caused by spinal cord injury and stroke, however, the effectiveness of ITB for spasticity related to penetrating brain injury is not well established. We reported two cases of spastic hypertonia following gunshot injury to brain with brief review of literature upon role of intrathecal baclofen pump (ITB) in cortical spastic hypertonia

scholarly journals Effects of Intrathecal Baclofen on Perceived Sexual Functioning in Men With Spinal Cord Injury

2008 ◽  
Vol 31 (1) ◽  
pp. 97-102 ◽  
Author(s):  
Michael L. Jones ◽  
Donald P. Leslie ◽  
Gerald Bilsky ◽  
Brock Bowman
Keyword(s):  
Spinal Cord ◽  
Spinal Cord Injury ◽  
Sexual Functioning ◽  
Intrathecal Baclofen ◽  
Cord Injury

scholarly journals Effect of cervicolumbar coupling on spinal reflexes during cycling after incomplete spinal cord injury

2018 ◽  
Vol 120 (6) ◽  
pp. 3172-3186 ◽  
Author(s):  
R. Zhou ◽  
B. Parhizi ◽  
J. Assh ◽  
L. Alvarado ◽  
R. Ogilvie ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Spinal Cord Injury ◽  
H Reflex ◽  
Spinal Reflexes ◽  
Incomplete Spinal Cord Injury ◽  
Reflex Amplitude ◽  
Arm Cycling ◽  
Cord Injury ◽  
Leg Cycling ◽  
Cycling Training

Spinal networks in the cervical and lumbar cord are actively coupled during locomotion to coordinate arm and leg activity. The goals of this project were to investigate the intersegmental cervicolumbar connectivity during cycling after incomplete spinal cord injury (iSCI) and to assess the effect of rehabilitation training on improving reflex modulation mediated by cervicolumbar pathways. Two studies were conducted. In the first, 22 neurologically intact (NI) people and 10 people with chronic iSCI were recruited. The change in H-reflex amplitude in flexor carpi radialis (FCR) during leg cycling and H-reflex amplitude in soleus (SOL) during arm cycling were investigated. In the second study, two groups of participants with chronic iSCI underwent 12 wk of cycling training: one performed combined arm and leg cycling (A&L) and the other legs only cycling (Leg). The effect of training paradigm on the amplitude of the SOL H-reflex was assessed. Significant reduction in the amplitude of both FCR and SOL H-reflexes during dynamic cycling of the opposite limbs was found in NI participants but not in participants with iSCI. Nonetheless, there was a significant reduction in the SOL H-reflex during dynamic arm cycling in iSCI participants after training. Substantial improvements in SOL H-reflex properties were found in the A&L group after training. The results demonstrate that cervicolumbar modulation during rhythmic movements is disrupted in people with chronic iSCI; however, this modulation is restored after cycling training. Furthermore, involvement of the arms simultaneously with the legs during training may better regulate the leg spinal reflexes.NEW & NOTEWORTHY This work systematically demonstrates the disruptive effect of incomplete spinal cord injury on cervicolumbar coupling during rhythmic locomotor movements. It also shows that the impaired cervicolumbar coupling could be significantly restored after cycling training. Actively engaging the arms in rehabilitation paradigms for the improvement of walking substantially regulates the excitability of the lumbar spinal networks. The resulting regulation may be better than that obtained by interventions that focus on training of the legs only.

scholarly journals Dendritic spine dysgenesis contributes to hyperreflexia after spinal cord injury

2015 ◽  
Vol 113 (5) ◽  
pp. 1598-1615 ◽  
Author(s):  
Samira P. Bandaru ◽  
Shujun Liu ◽  
Stephen G. Waxman ◽  
Andrew M. Tan
Keyword(s):  
Spinal Cord ◽  
Spinal Cord Injury ◽  
Motor Neurons ◽  
Dendritic Spine ◽  
Specific Inhibitor ◽  
H Reflex ◽  
Spine Density ◽  
Sprague Dawley ◽  
Cord Injury ◽  
Spinal Stretch Reflex

Hyperreflexia and spasticity are chronic complications in spinal cord injury (SCI), with limited options for safe and effective treatment. A central mechanism in spasticity is hyperexcitability of the spinal stretch reflex, which presents symptomatically as a velocity-dependent increase in tonic stretch reflexes and exaggerated tendon jerks. In this study we tested the hypothesis that dendritic spine remodeling within motor reflex pathways in the spinal cord contributes to H-reflex dysfunction indicative of spasticity after contusion SCI. Six weeks after SCI in adult Sprague-Dawley rats, we observed changes in dendritic spine morphology on α-motor neurons below the level of injury, including increased density, altered spine shape, and redistribution along dendritic branches. These abnormal spine morphologies accompanied the loss of H-reflex rate-dependent depression (RDD) and increased ratio of H-reflex to M-wave responses (H/M ratio). Above the level of injury, spine density decreased compared with below-injury spine profiles and spine distributions were similar to those for uninjured controls. As expected, there was no H-reflex hyperexcitability above the level of injury in forelimb H-reflex testing. Treatment with NSC23766, a Rac1-specific inhibitor, decreased the presence of abnormal dendritic spine profiles below the level of injury, restored RDD of the H-reflex, and decreased H/M ratios in SCI animals. These findings provide evidence for a novel mechanistic relationship between abnormal dendritic spine remodeling in the spinal cord motor system and reflex dysfunction in SCI.

Sign in / Sign up

Export Citation Format

Share Document