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MCPHS NUR 715 – Psychopharmacology Newest
Exam Preparation With Complete Questions And
Correct Answers With Rationales Already Graded
A+Brand New Version!!
1. A psychiatric-mental health nurse practitioner (PMHNP) is educating
a patient who is newly prescribed an antidepressant. The patient asks,
"How will this medication help me feel better?" Which response by the
PMHNP is most accurate regarding the mechanism of action of most
antidepressants?
A) "The medication will correct a chemical imbalance by increasing the
amount of serotonin in your brain."
B) "The medication works by numbing the emotional centers of your
brain so you don't feel as much pain."
C) "The medication will help your brain produce new neurons to
replace the ones that have been damaged."
D) "The medication acts by decreasing the overall metabolic activity of
your brain to reduce overthinking."
Answer: A
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Explanation: Most antidepressants, particularly SSRIs and SNRIs, work
by increasing the availability of monoamine neurotransmitters such as
serotonin and norepinephrine in the synaptic cleft. This is achieved
through mechanisms such as reuptake inhibition, which prolongs the
action of these neurotransmitters at the postsynaptic receptor. Option B
is incorrect because antidepressants do not numb emotions. Option C
describes neurogenesis, which is a secondary effect that may occur but
is not the primary mechanism of action. Option D is incorrect because
antidepressants do not broadly decrease metabolic activity.
2. A patient diagnosed with major depressive disorder has been taking
a selective serotonin reuptake inhibitor (SSRI) for six weeks with
minimal improvement. The PMHNP considers augmenting the SSRI with
which of the following medications that has a unique mechanism of
action involving the antagonism of 5-HT2A receptors and inhibition of
serotonin and norepinephrine reuptake?
A) Bupropion
B) Mirtazapine
C) Trazodone
D) Vortioxetine
Answer: B
Explanation: Mirtazapine is a noradrenergic and specific serotonergic
antidepressant (NaSSA). Its mechanism involves antagonism at central
presynaptic alpha-2 adrenergic receptors, which increases
norepinephrine and serotonin release, and blockade of 5-HT2A and 5-
HT3 receptors, which reduces sexual dysfunction and gastrointestinal
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side effects commonly associated with SSRIs. Bupropion is a
norepinephrine-dopamine reuptake inhibitor (NDRI) and does not
directly affect serotonin. Trazodone is a serotonin antagonist and
reuptake inhibitor (SARI) but is more commonly used for insomnia.
Vortioxetine is a serotonin modulator and stimulator (SMS) that acts as
a 5-HT3, 5-HT7, and 5-HT1D antagonist, 5-HT1B partial agonist, 5-HT1A
agonist, and serotonin reuptake inhibitor.
3. Which neurotransmitter system is primarily implicated in the
pathophysiology of schizophrenia and is the primary target of
antipsychotic medications?
A) Gamma-aminobutyric acid (GABA)
B) Norepinephrine
C) Dopamine
D) Acetylcholine
Answer: C
Explanation: The dopamine hypothesis of schizophrenia posits that
hyperdopaminergia in the mesolimbic pathway contributes to positive
symptoms (hallucinations, delusions), while hypodopaminergia in the
mesocortical pathway contributes to negative symptoms and cognitive
impairment. All effective antipsychotic medications block dopamine D2
receptors to some degree. GABA is the primary inhibitory
neurotransmitter and is implicated in anxiety disorders. Norepinephrine
is primarily involved in arousal and stress responses. Acetylcholine is
involved in memory and learning and is implicated in Alzheimer's
disease.
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4. A PMHNP is reviewing the mechanism of action of clozapine with a
group of students. Which statement correctly describes why clozapine
is considered an atypical antipsychotic and is effective in treatment-
resistant schizophrenia?
A) It selectively blocks dopamine D2 receptors in the mesolimbic
pathway without affecting other pathways.
B) It has a higher affinity for dopamine D2 receptors than for serotonin
5-HT2A receptors.
C) It has a higher affinity for serotonin 5-HT2A receptors than for
dopamine D2 receptors and blocks multiple other receptors.
D) It acts exclusively as a dopamine D4 receptor antagonist.
Answer: C
Explanation: Clozapine is the prototypical atypical antipsychotic. Its
distinguishing feature is a higher affinity for serotonin 5-HT2A receptors
than for dopamine D2 receptors. This serotonergic antagonism,
combined with D2 antagonism, is believed to contribute to its efficacy in
treatment-resistant schizophrenia and its lower risk of extrapyramidal
symptoms (EPS). Additionally, clozapine blocks multiple other receptors,
including D1, D3, D4, alpha-1, alpha-2, histamine H1, and muscarinic
M1 receptors, which contributes to its unique side effect profile.
5. A patient with bipolar I disorder is stabilized on lithium. The PMHNP
should be most concerned about which of the following drug
interactions that could increase lithium levels and lead to toxicity?
A) Concurrent use of a thiazide diuretic
MCPHS NUR 715 – Psychopharmacology Newest
Exam Preparation With Complete Questions And
Correct Answers With Rationales Already Graded
A+Brand New Version!!
1. A psychiatric-mental health nurse practitioner (PMHNP) is educating
a patient who is newly prescribed an antidepressant. The patient asks,
"How will this medication help me feel better?" Which response by the
PMHNP is most accurate regarding the mechanism of action of most
antidepressants?
A) "The medication will correct a chemical imbalance by increasing the
amount of serotonin in your brain."
B) "The medication works by numbing the emotional centers of your
brain so you don't feel as much pain."
C) "The medication will help your brain produce new neurons to
replace the ones that have been damaged."
D) "The medication acts by decreasing the overall metabolic activity of
your brain to reduce overthinking."
Answer: A
,2|Page
Explanation: Most antidepressants, particularly SSRIs and SNRIs, work
by increasing the availability of monoamine neurotransmitters such as
serotonin and norepinephrine in the synaptic cleft. This is achieved
through mechanisms such as reuptake inhibition, which prolongs the
action of these neurotransmitters at the postsynaptic receptor. Option B
is incorrect because antidepressants do not numb emotions. Option C
describes neurogenesis, which is a secondary effect that may occur but
is not the primary mechanism of action. Option D is incorrect because
antidepressants do not broadly decrease metabolic activity.
2. A patient diagnosed with major depressive disorder has been taking
a selective serotonin reuptake inhibitor (SSRI) for six weeks with
minimal improvement. The PMHNP considers augmenting the SSRI with
which of the following medications that has a unique mechanism of
action involving the antagonism of 5-HT2A receptors and inhibition of
serotonin and norepinephrine reuptake?
A) Bupropion
B) Mirtazapine
C) Trazodone
D) Vortioxetine
Answer: B
Explanation: Mirtazapine is a noradrenergic and specific serotonergic
antidepressant (NaSSA). Its mechanism involves antagonism at central
presynaptic alpha-2 adrenergic receptors, which increases
norepinephrine and serotonin release, and blockade of 5-HT2A and 5-
HT3 receptors, which reduces sexual dysfunction and gastrointestinal
,3|Page
side effects commonly associated with SSRIs. Bupropion is a
norepinephrine-dopamine reuptake inhibitor (NDRI) and does not
directly affect serotonin. Trazodone is a serotonin antagonist and
reuptake inhibitor (SARI) but is more commonly used for insomnia.
Vortioxetine is a serotonin modulator and stimulator (SMS) that acts as
a 5-HT3, 5-HT7, and 5-HT1D antagonist, 5-HT1B partial agonist, 5-HT1A
agonist, and serotonin reuptake inhibitor.
3. Which neurotransmitter system is primarily implicated in the
pathophysiology of schizophrenia and is the primary target of
antipsychotic medications?
A) Gamma-aminobutyric acid (GABA)
B) Norepinephrine
C) Dopamine
D) Acetylcholine
Answer: C
Explanation: The dopamine hypothesis of schizophrenia posits that
hyperdopaminergia in the mesolimbic pathway contributes to positive
symptoms (hallucinations, delusions), while hypodopaminergia in the
mesocortical pathway contributes to negative symptoms and cognitive
impairment. All effective antipsychotic medications block dopamine D2
receptors to some degree. GABA is the primary inhibitory
neurotransmitter and is implicated in anxiety disorders. Norepinephrine
is primarily involved in arousal and stress responses. Acetylcholine is
involved in memory and learning and is implicated in Alzheimer's
disease.
, 4|Page
4. A PMHNP is reviewing the mechanism of action of clozapine with a
group of students. Which statement correctly describes why clozapine
is considered an atypical antipsychotic and is effective in treatment-
resistant schizophrenia?
A) It selectively blocks dopamine D2 receptors in the mesolimbic
pathway without affecting other pathways.
B) It has a higher affinity for dopamine D2 receptors than for serotonin
5-HT2A receptors.
C) It has a higher affinity for serotonin 5-HT2A receptors than for
dopamine D2 receptors and blocks multiple other receptors.
D) It acts exclusively as a dopamine D4 receptor antagonist.
Answer: C
Explanation: Clozapine is the prototypical atypical antipsychotic. Its
distinguishing feature is a higher affinity for serotonin 5-HT2A receptors
than for dopamine D2 receptors. This serotonergic antagonism,
combined with D2 antagonism, is believed to contribute to its efficacy in
treatment-resistant schizophrenia and its lower risk of extrapyramidal
symptoms (EPS). Additionally, clozapine blocks multiple other receptors,
including D1, D3, D4, alpha-1, alpha-2, histamine H1, and muscarinic
M1 receptors, which contributes to its unique side effect profile.
5. A patient with bipolar I disorder is stabilized on lithium. The PMHNP
should be most concerned about which of the following drug
interactions that could increase lithium levels and lead to toxicity?
A) Concurrent use of a thiazide diuretic
