NSG 550 - Diagnostic Reasoning for Nurse Practitioners
Exam 3
Question:
Acetylcholine receptor antibody test
Answer:
Used to diagnose acquired myasthenia gravis and monitor pt response to immunosuppressive therapy. MG is an autoimmune disease caused by antibodies that block or destroy receptors for Ach. MG s/s=muscle weakness and fatigue
Question:
Cholinesterase
Answer:
Identify patients with PChE deficiency before anesthesia or to identify those who maybe have been exposed to phosphate poisoning. Also performed on an amniotic fluid to identify neural tube defects.
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Question:
EEG
Answer:
electrodiagnostic: graphical record of brain wave activity obtained through
electrodes placed on the scalp and forehead. Evaluates for seizure, tumors, infarcts, brain death (coma).
Question:
Caloric study
Answer:
electrodiagnostic: Used to evaluate function of CN VIII (vestibulocochlear).
Can indicate disease in temporal portion of the cerebrum. Part of a complete neuro examination. Done by a neurologist. Differentiates abnormalities of the vestibular system, brainstem, and cerebellum.
Question:
Electromyography (EMG)
Answer:
recording the strength of a muscle contraction as a result of electrical stimulation. Can identify primary muscle diseases and differentiate them from primary neurologic pathologic conditions.
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Question:
Nerve Conduction Study
Answer:
Performed to identify peripheral nerve injury in pts localized or diffuse weakness, muscle atrophy, dysesthesia, paresthesia, and neurologic pain.Differentiates primary peripheral nerve disease from muscular injury.
Question:
Evoked Potential Studies
Answer:
Indicated for patients who have a suspected sensory deficit but are unable to indicate or are unreliable indicating recognition of a stimulus (infants, comatose pts, noncommunicative pts, malingering pts). Used to monitor natural progression or treatment of deteriorating neurologic diseases like MS.
Question:
Lumbar puncture
Answer:
Fluid study: performed on pts who become increasingly demented and
confused. It is a test used to help diagnose Alzheimer's disease and other forms of senile dementia.
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