Question

the nurse is teaching a group of patients about how schizophrenia changes the structures of the brain. which information should the nurse include in the presentation?

select all that apply.

lower brain volume

shrinking of the cerebral ventricles

atrophy of the cerebral cortex

increased glucose level in the brain

decreased blood flow to the brain

Explanation:

Analyze structural brain changes in schizophrenia

Schizophrenia is associated with several distinct structural and physiological alterations in the brain:

• Lower brain volume: Research consistently shows overall reductions in total brain volume, particularly in gray matter.
• Enlargement (not shrinking) of the cerebral ventricles: Ventricular enlargement (ventriculomegaly) is a classic neuroanatomical finding in schizophrenia, reflecting a loss of surrounding brain tissue.
• Atrophy of the cerebral cortex: Cortical thinning and atrophy, especially in the frontal and temporal lobes, are well-documented.

Analyze physiological and metabolic changes

• Decreased glucose level/metabolism: Neuroimaging studies (like PET scans) show hypofrontality, which is characterized by decreased glucose metabolism and utilization in the frontal lobes, rather than increased levels.
• Decreased blood flow to the brain: Reduced regional cerebral blood flow (rCBF), particularly in the prefrontal cortex during cognitive tasks, is a characteristic physiological finding.

Select correct options

Based on the neurobiology of schizophrenia:

• "Lower brain volume" is correct.
• "Shrinking of the cerebral ventricles" is incorrect (they enlarge).
• "Atrophy of the cerebral cortex" is correct.
• "Increased glucose level in the brain" is incorrect (glucose metabolism decreases).
• "Decreased blood flow to the brain" is correct.

Answer:

• Lower brain volume (Correct answer)
• Shrinking of the cerebral ventricles
• Atrophy of the cerebral cortex (Correct answer)
• Increased glucose level in the brain
• Decreased blood flow to the brain (Correct answer)