PMHNP Board Review 2026-2027 | 100
Psychiatry Mental Health Nurse
Practitioner Practice Questions with
Answers & Explanations | Lithium,
Antipsychotics, Mood Stabilizers, EPS
Treatment, Drug Interactions &
Legal/Ethical Cases
Description:
Master the PMHNP certification exam with 100 high-yield practice questions updated for
2026-2027. Covers lithium toxicity, Depakote teratogenicity, CYP450
inducers/inhibitors, EPS management, Tarasoff duty, Erikson & Piaget stages, and
DSM-5-TR criteria. Each question includes detailed explanations.
Download the complete 2026-2027 exam prep guide now and pass your boards with confidence.
, PMHNP Certification Exam 2026-2027: 100 Practice Questions
Section 1: Psychopharmacology Principles and Pharmacokinetics
Question 1
When many answers on an examination are remarkably similar, they are usually
_____________.
A. incorrect
B. correct
C. indicating a pattern
D. distractors
Answer: A. incorrect
Explanation: In examination construction, when multiple answer choices appear strikingly
similar, they are typically designed as incorrect options to test the examinee's ability to
distinguish subtle differences. Test-takers should recognize that unusually similar answers
often signal distractor items rather than the correct response.
Question 2
A patient asks the psychiatric nurse practitioner to explain the difference between
pharmacokinetics and pharmacodynamics. Which response is most accurate?
A. Pharmacokinetics is what the drug does to the body; pharmacodynamics is what the body
does to the drug
B. Both terms describe the same process of drug metabolism in the liver
C. Pharmacokinetics is what the body does to the drug; pharmacodynamics is what the drug
does to the body
D. Pharmacokinetics refers to drug absorption only; pharmacodynamics refers to drug
excretion only
Answer: C. Pharmacokinetics is what the body does to the drug; pharmacodynamics is
what the drug does to the body
Explanation: Pharmacokinetics encompasses the four processes of drug movement through
the body: absorption, distribution, metabolism, and excretion (ADME). Pharmacodynamics
describes the biochemical and physiologic effects of drugs on the body, including receptor
binding and signal transduction.
,Question 3
A drug that binds to a receptor and activates a biological response by opening an ion channel
is best described as:
A. Partial agonist
B. Inverse agonist
C. Antagonist
D. Agonist
Answer: D. Agonist
Explanation: An agonist binds to a receptor and produces a full biological response,
including activation of downstream signaling pathways such as ion channel opening. Partial
agonists produce submaximal activation, inverse agonists produce opposite effects, and
antagonists block receptor activation without producing a response.
Question 4
A patient smokes two packs of cigarettes daily and is prescribed clozapine. The nurse
practitioner understands that smoking will most likely:
A. Increase clozapine serum levels due to enzyme inhibition
B. Decrease clozapine therapeutic levels due to enzyme induction
C. Have no effect on clozapine metabolism
D. Increase the risk of agranulocytosis
Answer: B. Decrease clozapine therapeutic levels due to enzyme induction
Explanation: Smoking induces the cytochrome P450 enzyme CYP1A2, which is responsible
for clozapine metabolism. Patients who smoke typically require higher doses of medications
metabolized by CYP1A2 to achieve therapeutic serum levels. Smoking cessation requires
close monitoring and dose reduction to prevent toxicity.
Question 5
Which cytochrome P450 enzyme is most associated with tobacco induction when treating a
patient with clozapine?
A. CYP2D6
B. CYP1A2
C. CYP2C19
D. CYP3A4
, Answer: B. CYP1A2
Explanation: CYP1A2 is the primary enzyme induced by polycyclic aromatic hydrocarbons
found in cigarette smoke. This enzyme is responsible for metabolizing clozapine, olanzapine,
and several other psychotropic medications. The mnemonic "want A2 cigarette break" helps
remember this association.
Question 6
A patient is being switched from an SSRI to an MAOI. To prevent serotonin syndrome, the
nurse practitioner should instruct the patient to wait:
A. 3 days
B. 7 days
C. 14 days
D. 24 hours
Answer: C. 14 days
Explanation: A washout period of at least 14 days is required when switching from most
SSRIs to an MAOI to prevent serotonin syndrome. Fluoxetine requires a 5-6 week washout
due to its long half-life and active metabolite. When switching from an MAOI to another
antidepressant, a 2-week washout period is similarly required.
Section 2: Mood Disorders and Antidepressants
Question 7
A 45-year-old female patient presents with depression, low energy, and significant fatigue.
She has no history of seizures. Which medication would be most appropriate as first-line
treatment?
A. Sertraline
B. Bupropion
C. Escitalopram
D. Venlafaxine
Answer: B. Bupropion
Explanation: Bupropion is a norepinephrine-dopamine reuptake inhibitor (NDRI) that is
particularly effective for patients presenting with low energy, fatigue, and anergia. Unlike
SSRIs, bupropion is activating and does not cause sexual side effects or weight gain.
Psychiatry Mental Health Nurse
Practitioner Practice Questions with
Answers & Explanations | Lithium,
Antipsychotics, Mood Stabilizers, EPS
Treatment, Drug Interactions &
Legal/Ethical Cases
Description:
Master the PMHNP certification exam with 100 high-yield practice questions updated for
2026-2027. Covers lithium toxicity, Depakote teratogenicity, CYP450
inducers/inhibitors, EPS management, Tarasoff duty, Erikson & Piaget stages, and
DSM-5-TR criteria. Each question includes detailed explanations.
Download the complete 2026-2027 exam prep guide now and pass your boards with confidence.
, PMHNP Certification Exam 2026-2027: 100 Practice Questions
Section 1: Psychopharmacology Principles and Pharmacokinetics
Question 1
When many answers on an examination are remarkably similar, they are usually
_____________.
A. incorrect
B. correct
C. indicating a pattern
D. distractors
Answer: A. incorrect
Explanation: In examination construction, when multiple answer choices appear strikingly
similar, they are typically designed as incorrect options to test the examinee's ability to
distinguish subtle differences. Test-takers should recognize that unusually similar answers
often signal distractor items rather than the correct response.
Question 2
A patient asks the psychiatric nurse practitioner to explain the difference between
pharmacokinetics and pharmacodynamics. Which response is most accurate?
A. Pharmacokinetics is what the drug does to the body; pharmacodynamics is what the body
does to the drug
B. Both terms describe the same process of drug metabolism in the liver
C. Pharmacokinetics is what the body does to the drug; pharmacodynamics is what the drug
does to the body
D. Pharmacokinetics refers to drug absorption only; pharmacodynamics refers to drug
excretion only
Answer: C. Pharmacokinetics is what the body does to the drug; pharmacodynamics is
what the drug does to the body
Explanation: Pharmacokinetics encompasses the four processes of drug movement through
the body: absorption, distribution, metabolism, and excretion (ADME). Pharmacodynamics
describes the biochemical and physiologic effects of drugs on the body, including receptor
binding and signal transduction.
,Question 3
A drug that binds to a receptor and activates a biological response by opening an ion channel
is best described as:
A. Partial agonist
B. Inverse agonist
C. Antagonist
D. Agonist
Answer: D. Agonist
Explanation: An agonist binds to a receptor and produces a full biological response,
including activation of downstream signaling pathways such as ion channel opening. Partial
agonists produce submaximal activation, inverse agonists produce opposite effects, and
antagonists block receptor activation without producing a response.
Question 4
A patient smokes two packs of cigarettes daily and is prescribed clozapine. The nurse
practitioner understands that smoking will most likely:
A. Increase clozapine serum levels due to enzyme inhibition
B. Decrease clozapine therapeutic levels due to enzyme induction
C. Have no effect on clozapine metabolism
D. Increase the risk of agranulocytosis
Answer: B. Decrease clozapine therapeutic levels due to enzyme induction
Explanation: Smoking induces the cytochrome P450 enzyme CYP1A2, which is responsible
for clozapine metabolism. Patients who smoke typically require higher doses of medications
metabolized by CYP1A2 to achieve therapeutic serum levels. Smoking cessation requires
close monitoring and dose reduction to prevent toxicity.
Question 5
Which cytochrome P450 enzyme is most associated with tobacco induction when treating a
patient with clozapine?
A. CYP2D6
B. CYP1A2
C. CYP2C19
D. CYP3A4
, Answer: B. CYP1A2
Explanation: CYP1A2 is the primary enzyme induced by polycyclic aromatic hydrocarbons
found in cigarette smoke. This enzyme is responsible for metabolizing clozapine, olanzapine,
and several other psychotropic medications. The mnemonic "want A2 cigarette break" helps
remember this association.
Question 6
A patient is being switched from an SSRI to an MAOI. To prevent serotonin syndrome, the
nurse practitioner should instruct the patient to wait:
A. 3 days
B. 7 days
C. 14 days
D. 24 hours
Answer: C. 14 days
Explanation: A washout period of at least 14 days is required when switching from most
SSRIs to an MAOI to prevent serotonin syndrome. Fluoxetine requires a 5-6 week washout
due to its long half-life and active metabolite. When switching from an MAOI to another
antidepressant, a 2-week washout period is similarly required.
Section 2: Mood Disorders and Antidepressants
Question 7
A 45-year-old female patient presents with depression, low energy, and significant fatigue.
She has no history of seizures. Which medication would be most appropriate as first-line
treatment?
A. Sertraline
B. Bupropion
C. Escitalopram
D. Venlafaxine
Answer: B. Bupropion
Explanation: Bupropion is a norepinephrine-dopamine reuptake inhibitor (NDRI) that is
particularly effective for patients presenting with low energy, fatigue, and anergia. Unlike
SSRIs, bupropion is activating and does not cause sexual side effects or weight gain.
