Chapter 4: Psychopharmacology NCLEX

A (Computed tomography (CT) scan) (A CT scan shows the presence or absence of structural changes, including cortical atrophy, ventricular enlargement, and areas of infarction—information that will be helpful to the health care provider. The other tests focus on brain activity and are more expensive; they may be ordered later.) - A patient has dementia. The health care provider wants to make a differential diagnosis between Alzheimer disease and multiple infarctions. Which diagnostic procedure should a nurse expect to prepare the patient for first? a. Computed tomography (CT) scan b. Positron emission tomography (PET) scan c. Functional magnetic resonance imaging (fMRI) d. Single-photon-emission computed tomography (SPECT) scan A (destroy increased amounts of neurotransmitters.) (Depression is thought to be related to the lowered availability of the neurotransmitter serotonin. SSRIs act by blocking the reuptake of serotonin, leaving a higher concentration available at the synaptic cleft. They actually prevent the destruction of serotonin, have no effect on acetylcholine and dopamine production, and do not block muscarinic or alpha1-norepinephrine receptors.) - A patient's spouse, who is a chemist, asks a nurse how serotonin reuptake inhibitors (SSRIs) lift depression. The nurse should explain that SSRIs: a. destroy increased amounts of neurotransmitters. b. make more serotonin available at the synaptic gap. c. increase production of acetylcholine and dopamine. d. block muscarinic and alpha1-norepinephrine receptors. A (dry mouth) (Muscarinic-receptor blockade includes atropine-like side effects such as dry mouth, blurred vision, and constipation. Gynecomastia is associated with decreased prolactin levels. Movement defects are associated with dopamine blockade. Orthostatic hypotension is associated with alpha1-receptor antagonism.) - A drug causes muscarinic-receptor blockade. A nurse will assess the patient for: a. dry mouth b. gynecomastia c. pseudoparkinsonis