Neurology - Neuromuscular diseases 
Digital electroencephalography - Brain mapping 
Electroneuromyography - Evoked potentials
Muscle biopsy


Rua Luiz Antônio da Silveira 1661 - 15025-020 São José do Rio Preto SP, Brazil
Tel +55 17 3232-4567   Fax +55 17 3232-7757   
jaris@terra.com.br

João Aris Kouyoumdjian, MD, PhD - CRM 27.557
Graduated in 1976 from the State Faculty of Medicine, São José do Rio Preto, São Paulo, Brazil
Medical Residency in Clinical Neurology - University of São Paulo, Brazil - 1977, 1978 and 1979
Research Fellowship Programme, Muscular Dystrophy Group Research Laboratories, University of Newcastle upon-Tyne, England - 1980/81
Associate Professor of Neurology and Clinical Neurophysiology (EMG) at the State Faculty of Medicine, São José do Rio Preto (www.famerp.br) since 1981 (jaris@famerp.br)
Fellowship in Clinical Neurophysiology (electroneuromyography and evoked potentials) at Hospital SARAH, Brasília, DF, Brazil - 1988
Board Certification in Electroneuromyography, Brazilian Association of Clinical Neurophysiology, Brazilian Medical Association - 1991
President of the Brazilian Society of Investigation of Neuromuscular Diseases from 1991 - 1993
Member of the Brazilian Association of Clinical Neurophysiology
Member of the American Association of Neuromuscular and Electrodiagnostic Medicine (www.aanem.net)
Master degree, 1998: "Carpal tunnel syndrome: clinical, epidemiological and nerve conduction studies in 668 cases"
Ph Degree, 2000: "Age, body mass index and wrist index as risk factors for carpal tunnel syndrome and nerve conduction severity" 
Books: "Eletroneuromiografia: conceitos de importância na prática médica" ("Electromyography: main utility in clinical practice") and "Síndrome do túnel do carpo" ("Carpal tunnel syndrome")
Author of more than 30 medical articles 

Nivia Canile do Valle Kouyoumdjian, MD - CRM 49.819
Graduated in 1983 from the State Faculty of Medicine, São José do Rio Preto, São Paulo, Brazil
Medical training in Neurology - State Faculty of Medicine, São José do Rio Preto, São Paulo, Brazil, 1984 - 1987 
Medical training in Clinical Neurophysiology (electroencephalography and evoked potentials) at Hospital SARAH, Brasília, DF, Brazil - 1988 
Member of the Brazilian League of Epilepsy 
Board Certification in Electroencephalography, Brazilian Association of Clinical Neurophysiology, Brazilian Medical Association - 1997

Analysis of the main objectives of electroneuromyography evaluation in some neurological syndromes

Traumatic lesions of the peripheral nerve

Peripheral Neuropathies

Evaluate severity, topography and evolution of lesion. EMG request at the correct time in cases of open or closed injury.
Pathophysiology of injury: axonal, demyelination or mixed. Predominant type: sensitive, motor or mixed. Evaluation of possible assymetries.

Entrapment Neuropathies

Facial paralysis

Detect the presence of focal demyelination of the peripheral nerve (main type of injury) with conduction blockage.
Motor nerve conduction to evaluate the prognosis from the seventh day on. Evaluate needle electromyography evolution (reinervation). 
Myasthenia Gravis Motor Neuron Disease 
(amyotrophic lateral sclerosis)
Detect presence of decrement (post-synaptic disfunction at the end-plate): myasthenia gravis. Detect presence of increment (pre-synaptic disfunction at the end-plate): Lambert-Eaton syndrome. Evaluate associated myopathy.
Dennervation/reinnervation in 3 segments of 5: superior limbs, inferior limbs and face/neck. Dennervation and reinnervation in 3 regions of 4: brain stem, cervical spine, thoracic spine and lumbosacral spine. Normal nerve conduction. Evaluate blockage of motor conduction only in cases of peripheral motor neuron disease.
Radiculopathies Myopathies
Detect topography, severity and evolution of root injury.
Detect presence of motor action unit potentials with typical abnormality. Detect abnormal spontaneous activity (myotonia).

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