NSG 552 Psychopharmacology Final Exam | Complete
Practice Questions, Correct Answers & Detailed
Rationales (2026/2027)
QUESTION 1
What is the primary mechanism of action of Selective Serotonin
Reuptake Inhibitors (SSRIs)?
A. Inhibition of monoamine oxidase enzymes
B. Blockade of the serotonin transporter (SERT)
C. Antagonism of 5-HT2A receptors
D. Stimulation of norepinephrine release
Correct Answer: B. Blockade of the serotonin transporter (SERT)
Detailed Rationale: SSRIs work by selectively binding to and inhibiting
the serotonin transporter, which prevents the reuptake of serotonin
from the synaptic cleft, thereby increasing the concentration of
serotonin available for synaptic signaling.
,QUESTION 2
Which food group must be strictly avoided by patients prescribed
Monoamine Oxidase Inhibitors (MAOIs) due to the risk of hypertensive
crisis?
A. Foods high in potassium
B. Foods containing tyramine
C. Citrus fruits
D. Dairy products
Correct Answer: B. Foods containing tyramine
Detailed Rationale: MAOIs inhibit the enzyme responsible for breaking
down tyramine in the gut. If a patient consumes tyramine-rich foods
(e.g., aged cheese, cured meats, fermented products), it can lead to a
dangerous spike in norepinephrine levels and a hypertensive crisis.
QUESTION 3
,Which laboratory value must be monitored most closely for a patient
taking Lithium to prevent toxicity?
A. Serum creatinine
B. Lithium serum trough level
C. Platelet count
D. Liver function tests (LFTs)
Correct Answer: B. Lithium serum trough level
Detailed Rationale: Lithium has a very narrow therapeutic index.
Regular monitoring of serum trough levels is required to ensure
concentrations remain within the therapeutic window (typically 0.6–1.2
mEq/L) to prevent toxicity.
QUESTION 4
A patient taking Clozapine must be monitored for agranulocytosis.
Which of the following lab values requires immediate discontinuation of
the medication?
, A. Elevated liver enzymes
B. Low Absolute Neutrophil Count (ANC)
C. Elevated fasting blood glucose
D. Decreased hemoglobin
Correct Answer: B. Low Absolute Neutrophil Count (ANC)
Detailed Rationale: Clozapine carries a boxed warning for
agranulocytosis. Regular blood draws to track the Absolute Neutrophil
Count (ANC) are mandatory (REMS program) because a significant drop
in neutrophils increases the risk of life-threatening infection.
QUESTION 5
Which cluster of symptoms is most suggestive of Serotonin Syndrome?
A. Bradycardia, hypotension, sedation
B. Hyperthermia, agitation, hyperreflexia, and myoclonus
Practice Questions, Correct Answers & Detailed
Rationales (2026/2027)
QUESTION 1
What is the primary mechanism of action of Selective Serotonin
Reuptake Inhibitors (SSRIs)?
A. Inhibition of monoamine oxidase enzymes
B. Blockade of the serotonin transporter (SERT)
C. Antagonism of 5-HT2A receptors
D. Stimulation of norepinephrine release
Correct Answer: B. Blockade of the serotonin transporter (SERT)
Detailed Rationale: SSRIs work by selectively binding to and inhibiting
the serotonin transporter, which prevents the reuptake of serotonin
from the synaptic cleft, thereby increasing the concentration of
serotonin available for synaptic signaling.
,QUESTION 2
Which food group must be strictly avoided by patients prescribed
Monoamine Oxidase Inhibitors (MAOIs) due to the risk of hypertensive
crisis?
A. Foods high in potassium
B. Foods containing tyramine
C. Citrus fruits
D. Dairy products
Correct Answer: B. Foods containing tyramine
Detailed Rationale: MAOIs inhibit the enzyme responsible for breaking
down tyramine in the gut. If a patient consumes tyramine-rich foods
(e.g., aged cheese, cured meats, fermented products), it can lead to a
dangerous spike in norepinephrine levels and a hypertensive crisis.
QUESTION 3
,Which laboratory value must be monitored most closely for a patient
taking Lithium to prevent toxicity?
A. Serum creatinine
B. Lithium serum trough level
C. Platelet count
D. Liver function tests (LFTs)
Correct Answer: B. Lithium serum trough level
Detailed Rationale: Lithium has a very narrow therapeutic index.
Regular monitoring of serum trough levels is required to ensure
concentrations remain within the therapeutic window (typically 0.6–1.2
mEq/L) to prevent toxicity.
QUESTION 4
A patient taking Clozapine must be monitored for agranulocytosis.
Which of the following lab values requires immediate discontinuation of
the medication?
, A. Elevated liver enzymes
B. Low Absolute Neutrophil Count (ANC)
C. Elevated fasting blood glucose
D. Decreased hemoglobin
Correct Answer: B. Low Absolute Neutrophil Count (ANC)
Detailed Rationale: Clozapine carries a boxed warning for
agranulocytosis. Regular blood draws to track the Absolute Neutrophil
Count (ANC) are mandatory (REMS program) because a significant drop
in neutrophils increases the risk of life-threatening infection.
QUESTION 5
Which cluster of symptoms is most suggestive of Serotonin Syndrome?
A. Bradycardia, hypotension, sedation
B. Hyperthermia, agitation, hyperreflexia, and myoclonus
