1|Page
NR546 Final Exam 2026/2027 - Advanced Pharmacology:
Psychopharmacology for the PMHNP | Latest Verified
Questions and Detailed Answers
OVERVIEW DESCRIPTION
This comprehensive set of multiple-choice questions is designed for the NR546 Advanced
Pharmacology: Psychopharmacology for the PMHNP Final Exam, a rigorous assessment
typically administered at the culmination of an advanced nursing course. The exam evaluates a
candidate’s ability to apply sophisticated pharmacological knowledge across complex clinical
scenarios, emphasizing drug mechanisms of action, side effect profiles, neurobiological
underpinnings, and safe prescribing practices. Content is drawn from key therapeutic areas
such as antidepressants, mood stabilizers, antipsychotics, anxiolytics, ADHD medications, and
substance use disorder treatments, with special attention to cytochrome P450 interactions,
special populations (pediatric/geriatric), and pregnancy considerations. The assessment
demands integration of didactic learning with clinical reasoning, moving beyond rote
memorization to test the nuanced decision-making required for advanced psychiatric-mental
health nursing practice.
QUESTION 1
A 34-year-old woman with major depressive disorder (MDD) has been on escitalopram
10 mg daily for 8 weeks with partial response; she reports persistent low mood,
anhedonia, and significant fatigue. Her appetite is normal and she denies suicidal
ideation. Which of the following augmentation strategies would directly target both
serotonin and norepinephrine to improve energy and mood?
A. Add bupropion XL 150 mg daily
B. Add aripiprazole 2 mg daily
C. Add quetiapine XR 50 mg at bedtime
D. Switch to sertraline 200 mg daily
CORRECT ANSWER: A
,2|Page
EXPERT RATIONALE: Bupropion inhibits reuptake of norepinephrine and dopamine,
addressing fatigue and anhedonia without serotonergic side effects. Augmenting an
SSRI with bupropion can enhance both serotonin and norepinephrine/dopamine
transmission to target residual symptoms.
QUESTION 2
A 72-year-old man with generalized anxiety disorder is currently on paroxetine 20 mg
daily. He complains of dry mouth, constipation, and difficulty urinating. Which receptor
blockade most likely explains these side effects?
A. Histamine H1
B. Muscarinic cholinergic
C. Alpha-1 adrenergic
D. Dopamine D2
CORRECT ANSWER: B
EXPERT RATIONALE: Paroxetine has strong anticholinergic (muscarinic) effects, causing
dry mouth, constipation, urinary retention, and cognitive impairment. These effects are
particularly dangerous in the elderly due to increased risk of falls and confusion.
QUESTION 3
A 28-year-old female with bipolar I disorder, currently on lithium 900 mg/day and
quetiapine 300 mg/day, develops coarse tremor, ataxia, and slurred speech. Her serum
lithium level is 1.9 mmol/L. Which concurrent medication most likely contributed to this
lithium toxicity?
A. Ibuprofen 600 mg TID for back pain
B. Lamotrigine 100 mg daily
C. Lorazepam 1 mg PRN
D. Levothyroxine 50 mcg daily
,3|Page
CORRECT ANSWER: A
EXPERT RATIONALE: NSAIDs such as ibuprofen reduce renal lithium clearance,
increasing serum lithium levels and risk of toxicity. Patients on lithium should be
educated to avoid NSAIDs and use acetaminophen for pain.
QUESTION 4
A PMHNP is prescribing a mood stabilizer for a patient with bipolar II disorder who
experiences predominantly depressive episodes and has a history of migraine
headaches. Which agent is the best choice, given its efficacy for bipolar depression and
migraine prophylaxis, while monitoring for severe rash?
A. Lithium
B. Valproic acid
C. Lamotrigine
D. Carbamazepine
CORRECT ANSWER: C
EXPERT RATIONALE: Lamotrigine is effective for bipolar depression and migraine
prevention; its dose must be slowly titrated to minimize the risk of Stevens-Johnson
syndrome. It has minimal efficacy for acute mania.
QUESTION 5
A 40-year-old man with alcohol use disorder is being treated with a medication that
causes unpleasant flushing, nausea, and palpitations if he drinks alcohol. Which
mechanism of action explains this effect?
A. Opioid receptor antagonism
B. Aldehyde dehydrogenase inhibition
, 4|Page
C. GABA-A receptor positive allosteric modulation
D. NMDA receptor antagonism
CORRECT ANSWER: B
EXPERT RATIONALE: Disulfiram inhibits aldehyde dehydrogenase, leading to
accumulation of acetaldehyde when alcohol is consumed, producing a toxic aversive
reaction. This negative reinforcement supports abstinence.
QUESTION 6
Which brain region is primarily responsible for executive functions, attention, and
working memory, and is implicated in the pathophysiology of ADHD?
A. Amygdala
B. Striatum
C. Prefrontal cortex (PFC)
D. Hippocampus
CORRECT ANSWER: C
EXPERT RATIONALE: The prefrontal cortex (PFC) governs executive functions such as
attention, impulse control, and working memory, and its hypofunction due to
dysregulated dopamine and norepinephrine transmission is central to ADHD. Stimulants
and non-stimulants enhance catecholamine signaling in the PFC.
QUESTION 7
A 30-year-old female with MDD was switched from fluoxetine 40 mg to a monoamine
oxidase inhibitor (MAOI). Her last dose of fluoxetine was 2 days ago. She now complains
of severe headache, tachycardia, and hypertension. This presentation is most consistent
with:
A. Neuroleptic malignant syndrome
NR546 Final Exam 2026/2027 - Advanced Pharmacology:
Psychopharmacology for the PMHNP | Latest Verified
Questions and Detailed Answers
OVERVIEW DESCRIPTION
This comprehensive set of multiple-choice questions is designed for the NR546 Advanced
Pharmacology: Psychopharmacology for the PMHNP Final Exam, a rigorous assessment
typically administered at the culmination of an advanced nursing course. The exam evaluates a
candidate’s ability to apply sophisticated pharmacological knowledge across complex clinical
scenarios, emphasizing drug mechanisms of action, side effect profiles, neurobiological
underpinnings, and safe prescribing practices. Content is drawn from key therapeutic areas
such as antidepressants, mood stabilizers, antipsychotics, anxiolytics, ADHD medications, and
substance use disorder treatments, with special attention to cytochrome P450 interactions,
special populations (pediatric/geriatric), and pregnancy considerations. The assessment
demands integration of didactic learning with clinical reasoning, moving beyond rote
memorization to test the nuanced decision-making required for advanced psychiatric-mental
health nursing practice.
QUESTION 1
A 34-year-old woman with major depressive disorder (MDD) has been on escitalopram
10 mg daily for 8 weeks with partial response; she reports persistent low mood,
anhedonia, and significant fatigue. Her appetite is normal and she denies suicidal
ideation. Which of the following augmentation strategies would directly target both
serotonin and norepinephrine to improve energy and mood?
A. Add bupropion XL 150 mg daily
B. Add aripiprazole 2 mg daily
C. Add quetiapine XR 50 mg at bedtime
D. Switch to sertraline 200 mg daily
CORRECT ANSWER: A
,2|Page
EXPERT RATIONALE: Bupropion inhibits reuptake of norepinephrine and dopamine,
addressing fatigue and anhedonia without serotonergic side effects. Augmenting an
SSRI with bupropion can enhance both serotonin and norepinephrine/dopamine
transmission to target residual symptoms.
QUESTION 2
A 72-year-old man with generalized anxiety disorder is currently on paroxetine 20 mg
daily. He complains of dry mouth, constipation, and difficulty urinating. Which receptor
blockade most likely explains these side effects?
A. Histamine H1
B. Muscarinic cholinergic
C. Alpha-1 adrenergic
D. Dopamine D2
CORRECT ANSWER: B
EXPERT RATIONALE: Paroxetine has strong anticholinergic (muscarinic) effects, causing
dry mouth, constipation, urinary retention, and cognitive impairment. These effects are
particularly dangerous in the elderly due to increased risk of falls and confusion.
QUESTION 3
A 28-year-old female with bipolar I disorder, currently on lithium 900 mg/day and
quetiapine 300 mg/day, develops coarse tremor, ataxia, and slurred speech. Her serum
lithium level is 1.9 mmol/L. Which concurrent medication most likely contributed to this
lithium toxicity?
A. Ibuprofen 600 mg TID for back pain
B. Lamotrigine 100 mg daily
C. Lorazepam 1 mg PRN
D. Levothyroxine 50 mcg daily
,3|Page
CORRECT ANSWER: A
EXPERT RATIONALE: NSAIDs such as ibuprofen reduce renal lithium clearance,
increasing serum lithium levels and risk of toxicity. Patients on lithium should be
educated to avoid NSAIDs and use acetaminophen for pain.
QUESTION 4
A PMHNP is prescribing a mood stabilizer for a patient with bipolar II disorder who
experiences predominantly depressive episodes and has a history of migraine
headaches. Which agent is the best choice, given its efficacy for bipolar depression and
migraine prophylaxis, while monitoring for severe rash?
A. Lithium
B. Valproic acid
C. Lamotrigine
D. Carbamazepine
CORRECT ANSWER: C
EXPERT RATIONALE: Lamotrigine is effective for bipolar depression and migraine
prevention; its dose must be slowly titrated to minimize the risk of Stevens-Johnson
syndrome. It has minimal efficacy for acute mania.
QUESTION 5
A 40-year-old man with alcohol use disorder is being treated with a medication that
causes unpleasant flushing, nausea, and palpitations if he drinks alcohol. Which
mechanism of action explains this effect?
A. Opioid receptor antagonism
B. Aldehyde dehydrogenase inhibition
, 4|Page
C. GABA-A receptor positive allosteric modulation
D. NMDA receptor antagonism
CORRECT ANSWER: B
EXPERT RATIONALE: Disulfiram inhibits aldehyde dehydrogenase, leading to
accumulation of acetaldehyde when alcohol is consumed, producing a toxic aversive
reaction. This negative reinforcement supports abstinence.
QUESTION 6
Which brain region is primarily responsible for executive functions, attention, and
working memory, and is implicated in the pathophysiology of ADHD?
A. Amygdala
B. Striatum
C. Prefrontal cortex (PFC)
D. Hippocampus
CORRECT ANSWER: C
EXPERT RATIONALE: The prefrontal cortex (PFC) governs executive functions such as
attention, impulse control, and working memory, and its hypofunction due to
dysregulated dopamine and norepinephrine transmission is central to ADHD. Stimulants
and non-stimulants enhance catecholamine signaling in the PFC.
QUESTION 7
A 30-year-old female with MDD was switched from fluoxetine 40 mg to a monoamine
oxidase inhibitor (MAOI). Her last dose of fluoxetine was 2 days ago. She now complains
of severe headache, tachycardia, and hypertension. This presentation is most consistent
with:
A. Neuroleptic malignant syndrome
