On the basis of current knowledge of neurotransmitter effects, a ...

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On the basis of current knowledge of neurotransmitter effects, a nurse anticipates that the treatment plan for a patient with memory difficulties may include medications designed to:
 
  a. inhibit GABA production.
  b. increase dopamine sensitivity.
  c. decrease dopamine at receptor sites.
  d. prevent destruction of acetylcholine.

Question 2

A patient has delusions and hallucinations. Before beginning treatment with a psychotropic medication, the health care provider wants to rule out the presence of a brain tumor. For which test will a nurse need to prepare the patient?
 
  a. Cerebral arteriogram
  b. Computed tomography (CT) scan or magnetic resonance imaging (MRI)
  c. Positron emission tomography (PET) or single photon emission computed tomography (SPECT)
  d. Functional magnetic resonance imaging (fMRI)

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Answer to Question 1

ANS: D
Increased acetylcholine plays a role in learning and memory. Preventing the destruction of acetylcholine by acetylcholinesteras e results in higher levels of acetylcholine with the potential for improved memory. GABA is known to affect anxiety level rather than memory. Increased dopamine causes symptoms associated with schizophrenia or mania rather than improves memory. Decreasing dopamine at receptor sites is associated with Parkinson disease rather than improving memory.

Answer to Question 2

ANS: B
A CT scan and an MRI visualize neoplasms and other structural abnormalities. A PET scan, SPECT scan, and fMRI, which give information about brain function, are not indicated. An arteriogram would not be appropriate.

[SO00]

TYSM

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Gracias!