scholarly journals Motor Evoked Potentials after Supraspinal Stimulation in Pre- and Postoperative Evaluations of Patients with Cervical Radiculopathy

2019 ◽  
Vol 2019 ◽  
pp. 1-11
Author(s):  
Aleksandra Bryndal ◽  
Magdalena Wojtysiak ◽  
Jakub Moskal ◽  
Joanna Lipiec-Kowalska ◽  
Martyna Borowczyk ◽  
...  
Keyword(s):  
Clinical Trials ◽  
Muscle Strength ◽  
Evoked Potentials ◽  
Motor Evoked Potentials ◽  
Cervical Radiculopathy ◽  
Diagnostic Value ◽  
Pain Severity ◽  
Test And Evaluation ◽  
Neurophysiological Tests ◽  
F Wave

Objective. Pre- and postoperative comparative evaluation of neurophysiological tests and clinical trials. Analysis of the diagnostic value of motor evoked potentials (MEP) induced by a magnetic field after supraspinal stimulation. Evaluation of the sensitivity and specificity of electromyography (EMG) and MEP is achieved. Methods. EMG, ENG, M-wave, F-wave, and MEP tests were performed on 35 patients with confirmed cervical radiculopathy in pre- and postoperative evaluations. The clinical trial consisted of evaluation of muscle strength, a sensory perception test and evaluation of tendon reflexes and pain severity. Results. The sensitivity of the resting EMG and MEP tests is 24%-67% and 6%-27%, while their specificity is 43%-80% and 86%-100%, respectively. The postoperative evaluation revealed a statistically significant reduction in pain severity (p=0001), an increase in muscle strength in DP (p=0.0431), BB (p=0,0431), and TB (p=0.0272), and improvement of touch sensation in terms of dermatomal innervation in C5 (p=0.0001) and C6 (p=0.0044). Conclusions. Tests comparing MRI sensitivity to neurophysiological tests show that neuroimaging is more sensitive in diagnostics of patients with cervical radiculopathy; however, clinical neurophysiology tests are more specific in reference to clinical trials.

The diagnostic value of motor evoked potentials

1999 ◽  
Vol 110 (7) ◽  
pp. 1297-1307 ◽  
Author(s):  
V. Di Lazzaro ◽  
A. Oliviero ◽  
P. Profice ◽  
L. Ferrara ◽  
E. Saturno ◽  
...  
Keyword(s):  
Evoked Potentials ◽  
Motor Evoked Potentials ◽  
Diagnostic Value

scholarly journals Reduced Quadriceps Motor-Evoked Potentials in an Individual with Unilateral Knee Osteoarthritis: A Case Report

2011 ◽  
Vol 2011 ◽  
pp. 1-5
Author(s):  
Michael A. Hunt ◽  
Jeanie R. Zabukovec ◽  
Sue Peters ◽  
Courtney L. Pollock ◽  
Meghan A. Linsdell ◽  
...  
Keyword(s):  
Muscle Strength ◽  
Evoked Potentials ◽  
Motor Evoked Potentials ◽  
Rectus Femoris ◽  
Quadriceps Muscle ◽  
Exercise Session ◽  
Muscle Strengthening ◽  
Knee Oa ◽  
Peripheral Muscle ◽  
Unilateral Disease

One male with unilateral osteoarthritis (OA) of the knee underwent testing of corticospinal (CS) excitability (as quantified from motor-evoked potentials (MEPs) in the rectus femoris (RF) using transcranial magnetic stimulation) and quadriceps muscle strength. Baseline data indicated reduced MEP amplitudes in the RF of the affected limb compared to the unaffected limb. Increases in RF MEP amplitudes from both limbs were observed immediately following a 30-minute exercise session focusing on muscle strengthening. Following an 8-week muscle strengthening intervention, the participant exhibited increased MEP amplitudes and muscle strength in the affected limb. These findings suggest that alterations in peripheral muscle function found in patients with knee OA may have an origin centrally within the motor cortex and that interlimb differences may be evident in those with unilateral disease. These findings also suggest that CS excitability may be improved following a muscle strengthening intervention.

scholarly journals Neurophysiological evaluation of patients with degenerative diseases of the cervical spine

2011 ◽  
Vol 68 (3) ◽  
pp. 241-247
Author(s):  
Tihomir Ilic ◽  
Snezana Stankovic ◽  
Nela Ilic ◽  
Sanja Kostic ◽  
Vlado Djajic ◽  
...  
Keyword(s):  
Cervical Spine ◽  
Evoked Potentials ◽  
Motor Neurons ◽  
Motor Evoked Potentials ◽  
Diagnostic Evaluation ◽  
Conduction Time ◽  
Functional Evaluation ◽  
Degenerative Diseases ◽  
Dynamic Tests ◽  
Neurophysiological Tests

Bacground/Aim. Diagnostic protocol for patients with degenerative diseases of the cervical spine demands, in parallel with neuroimaging methods, functional evaluation through neurophysiological methods (somatosensitive and motor evoked potentials and electromyoneurography) aiming to evaluate possible subclinical affection of spinal medula resulting in neurological signs of long tract abnormalities. Considering diversities of clinical outcomes for these patients, complex diagnostic evaluation provides a prognosis of the disease progression. Methods. The study included 21 patients (48.24 ? 11.01 years of age) with clinical presentation of cervical spondylarthropathy, without neuroradiological signs of myelopathy. For each patient, in addition to conventional neurophysiological tests (somatisensory evoked potentials - SSEP, motor evoked potentials - MEP, electromyoneurography - EMG, nerve conduction studies), we calculated central motor conduction time (CMCTF), as well the same parameter in relation to a different position of the head (maximal anteflexion and retroflexion), so-called dynamic tests. Results. Abnormalities of the peripheral motor neurone by conventional EMNeG was established in 2/3 of the patients, correponding to the findings of root condution time. Prolonged conventional CVMPF were found in 29% of the patients, comparing to 43% CVMPF abnormalities found with the dynamic tests. In addition, the SSEP findings were abnormal in 38% of the patients with degenerative diseases of the cervical spine. Conclusion. An extended neurophysiological protocol of testing corticospinal functions, including dynamic tests of central and periheral motor neurons are relevant for detection of subclinical forms of cervical spondylothic myelopathy, even at early stages. In addition to the conventional neurophysiological tests, we found usefull to include the dynamic motor tests and root conduction time measurement in diagnostic evaluation.

scholarly journals Intraoperative Neurophysiological Monitoring in Spine Surgery

2017 ◽  
Vol 51 (2) ◽  
pp. 89-94
Author(s):  
Mushtaq A Shaikh
Keyword(s):  
Evoked Potentials ◽  
Spine Surgery ◽  
Auditory Evoked Potentials ◽  
Motor Evoked Potentials ◽  
Diagnostic Value ◽  
Intraoperative Neurophysiological Monitoring ◽  
Neurophysiological Monitoring ◽  
Diagnostic Efficacy ◽  
Iatrogenic Complications ◽  
Different Types

ABSTRACT Intraoperative neurophysiological monitoring (IONM) encompasses a variety of neurological testing modalities used during surgery to monitor, identify, and potentially prevent iatrogenic complications to the nervous system and the blood supply to it or adjacent tissue. It has been used to monitor integrity of the neural pathway during spinal, neurological, cranial, and vascular procedures. Specific tests are designed to the clinical need of the surgery. Modalities may include: Somatosensory evoked potentials, motor evoked potentials, spontaneous or triggered electromyography, brainstem auditory evoked potentials, visual evoked potentials, electroencephalogram, and electrocorticography. During spinal surgery, a wide variety of procedures are utilized in which the spinal cord, nerve roots, and key blood vessels are frequently placed at risk from iatrogenic injury. Multimodal IONM relies on the strengths of different types of neurophysiological modalities to maximize the diagnostic efficacy in regard to sensitivity and specificity in the detection of impending neural injury. Thorough knowledge of the benefits and limitations of each modality helps in optimizing the diagnostic value of IONM during spinal procedures. As spinal surgeries continue to evolve, the value of neuromonitoring will also continue to become more prominent. How to cite this article Shaikh MA. Intraoperative Neurophysiological Monitoring in Spine Surgery. J Postgrad Med Edu Res 2017;51(2):89-94.

P429 The diagnostic value of motor evoked potentials

1996 ◽  
Vol 99 (4) ◽  
pp. 375
Author(s):  
P. Profice ◽  
V. Di Lazzaro ◽  
D. Restuccia ◽  
L. Ferrara ◽  
A. Oliviero ◽  
...  
Keyword(s):  
Evoked Potentials ◽  
Motor Evoked Potentials ◽  
Diagnostic Value
Sign in / Sign up

Export Citation Format

Share Document