14 Questions
What type of lesions can severely affect recruitment in an EMG?
Axonal
What is the term for a condition in which the lesion primarily affects myelin or the Schwann cell?
Myelinopathy
What is the term for weakness or partial paralysis of one side of the body?
Hemiparesis
What is the term for a lesion that affects the spinal cord and results in ipsilateral loss of motor and proprioception, and contralateral loss of pain and temperature?
Brown-Sequard Syndrome
What is the term for a condition in which there is damage to the cranial nerves, resulting in weakness or paralysis of the facial muscles?
Bell's Palsy
Which type of pathology is characterized by axonal degeneration?
Axonopathy
What is the main difference in clinical presentation between axonopathy and myelinopathy?
Gradual onset and steadily progressive course in axonopathy
What is the rate of regeneration in axonopathy?
14 mm per day
Which condition is an example of myelinopathy?
Guillain-Barré syndrome
Which of the following is not a characteristic of axonopathy?
Acute onset and rapid course
A patient presents with hemiparesis. Which of the following is the most likely diagnosis?
Upper motor neuron lesion
What is the primary difference between hemiplegia and hemiparesis?
Hemiplegia is a complete paralysis, while hemiparesis is a partial paralysis.
What is a common consequence of brain stem lesions?
Cranial nerve paralysis
A patient presents with a spinal cord injury. What is the most likely neurological deficit?
Hemiparesis
This quiz covers myelinopathy, a condition affecting myelin or Schwann cells, and its effects on EMG recruitment. Understand the impact of axonal lesions on recruitment patterns.
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