PMHNP Boards Test Bank Actual Exam 2026/2027 – Comprehensive Psychiatric
Nurse Practitioner Exam with Detailed Rationales | 100% Verified | Pass
Guaranteed – A+ Graded
Aligned with 2026/27 ANCC PMHNP-BC Examination Content Outline & ANA
Scope/Standards
Section A: Neurobiology, Psychopharmacology, & Advanced
Pathophysiology (Questions 1–12)
Q1: A 34-year-old woman with major depressive disorder is started on fluoxetine 20 mg
daily. The PMHNP explains that the antidepressant effect is primarily mediated through
which mechanism?
A. Direct agonism of postsynaptic 5-HT1A receptors [CORRECT]
B. Blockade of the norepinephrine transporter (NET)
C. Inhibition of monoamine oxidase type A
D. Antagonism of the NMDA glutamate receptor
Correct Answer: A
Rationale: SSRIs like fluoxetine block the serotonin transporter (SERT), increasing
synaptic serotonin. Chronic administration leads to downregulation of somatodendritic
,5-HT1A autoreceptors, enhancing postsynaptic 5-HT1A signaling and producing the
therapeutic antidepressant effect. B describes SNRIs/TCAs; C describes MAOIs; D
describes ketamine's mechanism.
Q2: A 28-year-old man with schizophrenia is prescribed risperidone 4 mg daily. After two
weeks, he reports muscle stiffness, akathisia, and a resting tremor. Which
neurotransmitter receptor profile best explains these extrapyramidal symptoms (EPS)?
A. High D2 receptor occupancy (>80%) with low 5-HT2A antagonism [CORRECT]
B. High 5-HT2A occupancy with minimal D2 blockade
C. High muscarinic acetylcholine receptor antagonism
D. High alpha-1 adrenergic receptor blockade
Correct Answer: A
Rationale: EPS result from excessive D2 receptor blockade in the nigrostriatal pathway
(>80% occupancy), particularly when 5-HT2A antagonism is insufficient to offset
dopaminergic inhibition. Atypical antipsychotics with higher 5-HT2A:D2 affinity ratios
(e.g., clozapine, quetiapine) carry lower EPS risk. B describes low-EPS atypicals; C
causes anticholinergic effects; D causes orthostasis.
Q3: A 52-year-old woman with bipolar I disorder has been stable on lithium carbonate
900 mg BID for three years. Her most recent serum lithium level is 1.4 mEq/L
,(therapeutic: 0.6–1.2). She reports nausea, coarse tremor, and mild ataxia. Which
electrolyte imbalance most commonly precipitates lithium toxicity in this scenario?
A. Hyponatremia [CORRECT]
B. Hyperkalemia
C. Hypocalcemia
D. Hypomagnesemia
Correct Answer: A
Rationale: Lithium and sodium compete for renal proximal tubule reabsorption.
Hyponatremia (from diuretics, dehydration, or SIADH) increases lithium reabsorption
and serum levels, precipitating toxicity. The patient exhibits early signs of lithium
toxicity (GI distress, tremor, ataxia) at a supratherapeutic level. B, C, and D do not
directly alter lithium renal handling.
Q4: A 19-year-old college student is prescribed lisdexamfetamine 30 mg daily for ADHD.
The PMHNP counsels the patient about the mechanism of action. Lisdexamfetamine
exerts its therapeutic effect primarily through which neurotransmitter action?
A. Blockade of the dopamine transporter (DAT) and norepinephrine transporter (NET),
increasing catecholamine release [CORRECT]
B. Selective inhibition of serotonin reuptake
C. Agonism of alpha-2A adrenergic receptors in the prefrontal cortex
D. Blockade of NMDA glutamate receptors
, Correct Answer: A
Rationale: Amphetamines (including lisdexamfetamine) reverse DAT/NET function,
increasing dopamine and norepinephrine release into the synapse and blocking
reuptake. This enhances prefrontal cortical signaling for attention and executive
function. B describes SSRIs; C describes guanfacine/clonidine; D describes ketamine.
Q5: A 67-year-old man with treatment-resistant depression is being considered for
phenelzine 15 mg TID after failing an SSRI and SNRI. The PMHNP provides dietary
counseling. Which food item must be strictly avoided due to risk of hypertensive crisis?
A. Aged cheddar cheese [CORRECT]
B. Fresh mozzarella cheese
C. Pasteurized yogurt
D. Cottage cheese
Correct Answer: A
Rationale: MAOIs like phenelzine irreversibly inhibit monoamine oxidase, preventing
tyramine metabolism. Aged/fermented foods (aged cheeses, cured meats, red wine,
sauerkraut) contain high tyramine, which can precipitate a hypertensive crisis. Fresh
cheeses (mozzarella, cottage cheese, cream cheese, ricotta) and pasteurized dairy
products are generally safe. B, C, and D are low-tyramine options.
Nurse Practitioner Exam with Detailed Rationales | 100% Verified | Pass
Guaranteed – A+ Graded
Aligned with 2026/27 ANCC PMHNP-BC Examination Content Outline & ANA
Scope/Standards
Section A: Neurobiology, Psychopharmacology, & Advanced
Pathophysiology (Questions 1–12)
Q1: A 34-year-old woman with major depressive disorder is started on fluoxetine 20 mg
daily. The PMHNP explains that the antidepressant effect is primarily mediated through
which mechanism?
A. Direct agonism of postsynaptic 5-HT1A receptors [CORRECT]
B. Blockade of the norepinephrine transporter (NET)
C. Inhibition of monoamine oxidase type A
D. Antagonism of the NMDA glutamate receptor
Correct Answer: A
Rationale: SSRIs like fluoxetine block the serotonin transporter (SERT), increasing
synaptic serotonin. Chronic administration leads to downregulation of somatodendritic
,5-HT1A autoreceptors, enhancing postsynaptic 5-HT1A signaling and producing the
therapeutic antidepressant effect. B describes SNRIs/TCAs; C describes MAOIs; D
describes ketamine's mechanism.
Q2: A 28-year-old man with schizophrenia is prescribed risperidone 4 mg daily. After two
weeks, he reports muscle stiffness, akathisia, and a resting tremor. Which
neurotransmitter receptor profile best explains these extrapyramidal symptoms (EPS)?
A. High D2 receptor occupancy (>80%) with low 5-HT2A antagonism [CORRECT]
B. High 5-HT2A occupancy with minimal D2 blockade
C. High muscarinic acetylcholine receptor antagonism
D. High alpha-1 adrenergic receptor blockade
Correct Answer: A
Rationale: EPS result from excessive D2 receptor blockade in the nigrostriatal pathway
(>80% occupancy), particularly when 5-HT2A antagonism is insufficient to offset
dopaminergic inhibition. Atypical antipsychotics with higher 5-HT2A:D2 affinity ratios
(e.g., clozapine, quetiapine) carry lower EPS risk. B describes low-EPS atypicals; C
causes anticholinergic effects; D causes orthostasis.
Q3: A 52-year-old woman with bipolar I disorder has been stable on lithium carbonate
900 mg BID for three years. Her most recent serum lithium level is 1.4 mEq/L
,(therapeutic: 0.6–1.2). She reports nausea, coarse tremor, and mild ataxia. Which
electrolyte imbalance most commonly precipitates lithium toxicity in this scenario?
A. Hyponatremia [CORRECT]
B. Hyperkalemia
C. Hypocalcemia
D. Hypomagnesemia
Correct Answer: A
Rationale: Lithium and sodium compete for renal proximal tubule reabsorption.
Hyponatremia (from diuretics, dehydration, or SIADH) increases lithium reabsorption
and serum levels, precipitating toxicity. The patient exhibits early signs of lithium
toxicity (GI distress, tremor, ataxia) at a supratherapeutic level. B, C, and D do not
directly alter lithium renal handling.
Q4: A 19-year-old college student is prescribed lisdexamfetamine 30 mg daily for ADHD.
The PMHNP counsels the patient about the mechanism of action. Lisdexamfetamine
exerts its therapeutic effect primarily through which neurotransmitter action?
A. Blockade of the dopamine transporter (DAT) and norepinephrine transporter (NET),
increasing catecholamine release [CORRECT]
B. Selective inhibition of serotonin reuptake
C. Agonism of alpha-2A adrenergic receptors in the prefrontal cortex
D. Blockade of NMDA glutamate receptors
, Correct Answer: A
Rationale: Amphetamines (including lisdexamfetamine) reverse DAT/NET function,
increasing dopamine and norepinephrine release into the synapse and blocking
reuptake. This enhances prefrontal cortical signaling for attention and executive
function. B describes SSRIs; C describes guanfacine/clonidine; D describes ketamine.
Q5: A 67-year-old man with treatment-resistant depression is being considered for
phenelzine 15 mg TID after failing an SSRI and SNRI. The PMHNP provides dietary
counseling. Which food item must be strictly avoided due to risk of hypertensive crisis?
A. Aged cheddar cheese [CORRECT]
B. Fresh mozzarella cheese
C. Pasteurized yogurt
D. Cottage cheese
Correct Answer: A
Rationale: MAOIs like phenelzine irreversibly inhibit monoamine oxidase, preventing
tyramine metabolism. Aged/fermented foods (aged cheeses, cured meats, red wine,
sauerkraut) contain high tyramine, which can precipitate a hypertensive crisis. Fresh
cheeses (mozzarella, cottage cheese, cream cheese, ricotta) and pasteurized dairy
products are generally safe. B, C, and D are low-tyramine options.
