NR 546 Exam 3 V3 | NR 546 Advanced
Psychopharmacology | Chamberlain | Q&A
with Rationale (Chamberlain NR546 Exam
3)
1. A patient diagnosed with schizophrenia is experiencing auditory hallucinations and
delusions. Which dopamine pathway is primarily implicated in the development of these
positive symptoms?
A. Mesocortical pathway
B. Nigrostriatal pathway
C. Mesolimbic pathway
D. Tuberoinfundibular pathway
Answer: C
Rationale: The mesolimbic pathway involves dopamine projections from the ventral
tegmental area to the nucleus accumbens. Hyperactivity in this specific pathway is
hypothesized to mediate the positive symptoms of psychosis, such as hallucinations and
delusions. Conversely, hypoactivity in the mesocortical pathway is associated with negative
and cognitive symptoms.
,2. A PMHNP is considering starting a patient on Clozapine for treatment-resistant
schizophrenia. What is the mandatory minimum Absolute Neutrophil Count (ANC) required to
initiate this medication?
A. 500/mm³
B. 1,000/mm³
C. 1,500/mm³
D. 2,000/mm³
Answer: C
Rationale: Before starting Clozapine, the clinician must ensure the patient’s ANC is at least
1,500/mm³ for the general population. For patients with documented Benign Ethnic
Neutropenia (BEN), the threshold for initiation is 1,000/mm³. Monitoring ANC is critical
due to the risk of life-threatening agranulocytosis associated with Clozapine therapy.
3. Which of the following side effects is most characteristic of dopamine D2 receptor
blockade in the tuberoinfundibular pathway?
A. Tardive dyskinesia
B. Akathisia
C. Weight gain
D. Hyperprolactinemia
Answer: D
,Rationale: The tuberoinfundibular pathway regulates the secretion of prolactin from the
anterior pituitary gland. When D2 receptors in this pathway are blocked by antipsychotics,
prolactin levels rise because dopamine normally inhibits its release. This can lead to
clinical symptoms such as galactorrhea, gynecomastia, and sexual dysfunction.
4. A patient taking Lithium for Bipolar I Disorder presents with coarse tremors, ataxia, and
confusion. The serum Lithium level is 2.1 mEq/L. What is the most appropriate next step?
A. Increase fluid intake and continue the current dose
B. Decrease the dose by half and retest in one week
C. Add a beta-blocker to treat the tremor
D. Hold the Lithium dose and assess for toxicity
Answer: D
Rationale: A Lithium level of 2.1 mEq/L indicates moderate to severe toxicity, as the
therapeutic range is typically 0.6 to 1.2 mEq/L. Symptoms like ataxia and coarse tremors
are significant warning signs that require immediate cessation of the drug. The clinician
must prioritize patient safety and stabilization before considering any further mood
stabilizer adjustments.
5. When prescribing Lamotrigine, the PMHNP must educate the patient on the risk of a
serious rash. Which titration strategy is recommended to reduce the risk of Stevens-Johnson
Syndrome?
A. Start at 25 mg daily for two weeks, then 50 mg for two weeks
, B. Start at 100 mg daily and increase by 100 mg every week
C. Start at 50 mg daily and double the dose every 3 days
D. Begin with a loading dose of 200 mg to achieve steady state
Answer: A
Rationale: Lamotrigine must be titrated very slowly to minimize the risk of life-
threatening rashes like Stevens-Johnson Syndrome. The standard titration starts at 25 mg
daily for the first two weeks, followed by 50 mg daily for weeks three and four. Faster
titration schedules significantly increase the incidence of severe dermatological reactions.
6. A 28-year-old female patient with Bipolar Disorder is currently managed on Valproate
(Depakote). She informs the PMHNP she is planning to become pregnant. What is the most
significant risk associated with Valproate use during pregnancy?
A. Neural tube defects
B. Ebstein’s anomaly
C. Persistent pulmonary hypertension
D. Fetal goiter
Answer: A
Rationale: Valproate is a known teratogen that carries a high risk for neural tube defects,
such as spina bifida, particularly when taken during the first trimester. It is also associated
Psychopharmacology | Chamberlain | Q&A
with Rationale (Chamberlain NR546 Exam
3)
1. A patient diagnosed with schizophrenia is experiencing auditory hallucinations and
delusions. Which dopamine pathway is primarily implicated in the development of these
positive symptoms?
A. Mesocortical pathway
B. Nigrostriatal pathway
C. Mesolimbic pathway
D. Tuberoinfundibular pathway
Answer: C
Rationale: The mesolimbic pathway involves dopamine projections from the ventral
tegmental area to the nucleus accumbens. Hyperactivity in this specific pathway is
hypothesized to mediate the positive symptoms of psychosis, such as hallucinations and
delusions. Conversely, hypoactivity in the mesocortical pathway is associated with negative
and cognitive symptoms.
,2. A PMHNP is considering starting a patient on Clozapine for treatment-resistant
schizophrenia. What is the mandatory minimum Absolute Neutrophil Count (ANC) required to
initiate this medication?
A. 500/mm³
B. 1,000/mm³
C. 1,500/mm³
D. 2,000/mm³
Answer: C
Rationale: Before starting Clozapine, the clinician must ensure the patient’s ANC is at least
1,500/mm³ for the general population. For patients with documented Benign Ethnic
Neutropenia (BEN), the threshold for initiation is 1,000/mm³. Monitoring ANC is critical
due to the risk of life-threatening agranulocytosis associated with Clozapine therapy.
3. Which of the following side effects is most characteristic of dopamine D2 receptor
blockade in the tuberoinfundibular pathway?
A. Tardive dyskinesia
B. Akathisia
C. Weight gain
D. Hyperprolactinemia
Answer: D
,Rationale: The tuberoinfundibular pathway regulates the secretion of prolactin from the
anterior pituitary gland. When D2 receptors in this pathway are blocked by antipsychotics,
prolactin levels rise because dopamine normally inhibits its release. This can lead to
clinical symptoms such as galactorrhea, gynecomastia, and sexual dysfunction.
4. A patient taking Lithium for Bipolar I Disorder presents with coarse tremors, ataxia, and
confusion. The serum Lithium level is 2.1 mEq/L. What is the most appropriate next step?
A. Increase fluid intake and continue the current dose
B. Decrease the dose by half and retest in one week
C. Add a beta-blocker to treat the tremor
D. Hold the Lithium dose and assess for toxicity
Answer: D
Rationale: A Lithium level of 2.1 mEq/L indicates moderate to severe toxicity, as the
therapeutic range is typically 0.6 to 1.2 mEq/L. Symptoms like ataxia and coarse tremors
are significant warning signs that require immediate cessation of the drug. The clinician
must prioritize patient safety and stabilization before considering any further mood
stabilizer adjustments.
5. When prescribing Lamotrigine, the PMHNP must educate the patient on the risk of a
serious rash. Which titration strategy is recommended to reduce the risk of Stevens-Johnson
Syndrome?
A. Start at 25 mg daily for two weeks, then 50 mg for two weeks
, B. Start at 100 mg daily and increase by 100 mg every week
C. Start at 50 mg daily and double the dose every 3 days
D. Begin with a loading dose of 200 mg to achieve steady state
Answer: A
Rationale: Lamotrigine must be titrated very slowly to minimize the risk of life-
threatening rashes like Stevens-Johnson Syndrome. The standard titration starts at 25 mg
daily for the first two weeks, followed by 50 mg daily for weeks three and four. Faster
titration schedules significantly increase the incidence of severe dermatological reactions.
6. A 28-year-old female patient with Bipolar Disorder is currently managed on Valproate
(Depakote). She informs the PMHNP she is planning to become pregnant. What is the most
significant risk associated with Valproate use during pregnancy?
A. Neural tube defects
B. Ebstein’s anomaly
C. Persistent pulmonary hypertension
D. Fetal goiter
Answer: A
Rationale: Valproate is a known teratogen that carries a high risk for neural tube defects,
such as spina bifida, particularly when taken during the first trimester. It is also associated
