, NSG 552 – Final Exam Questions and
Answers with Rationale 2026/2027
Question 1
Which of the following neurotransmitters is primarily implicated
in the pathophysiology of major depressive disorder and is the
primary target for selective serotonin reuptake inhibitors
(SSRIs)?
A. Dopamine
B. Serotonin
C. Norepinephrine
D. Gamma-aminobutyric acid
Answer: B
Rationale: Serotonin (5-hydroxytryptamine) plays a critical role
in mood regulation, sleep, and appetite. SSRIs block the
reuptake of serotonin into presynaptic neurons, increasing its
availability in the synaptic cleft to alleviate depressive
symptoms.
Question 2
,When initiating treatment with a selective serotonin reuptake
inhibitor (SSRI) in an adult patient with major depression, the
psychiatric-mental health nurse practitioner should counsel the
patient that the full therapeutic effect typically takes how long to
manifest?
A. 24 to 48 hours
B. 3 to 5 days
C. 2 weeks
D. 4 to 6 weeks
Answer: D
Rationale:* While some initial side effects and minor
improvements may occur early, significant and full therapeutic
clinical response from SSRIs generally requires 4 to 6 weeks of
consistent daily dosing due to downstream neuroplastic changes
and receptor desensitization.
Question 3
A patient currently taking an SSRI presents with confusion,
agitation, tachycardia, hypertension, diaphoresis, and
myoclonus. Which life-threatening condition should the
clinician immediately suspect?
A. Neuroleptic malignant syndrome
B. Serotonin syndrome
C. Anticholinergic toxicity
, D. Lithium toxicity
Answer: B
Rationale:* Serotonin syndrome is a potentially fatal condition
caused by excessive central and peripheral serotonergic activity,
classically characterized by the triad of mental status changes,
autonomic instability, and neuromuscular hyperactivity (such as
clonus and hyperreflexia).
Question 4
Which class of psychotropic medications requires routine
therapeutic drug monitoring due to a narrow margin of safety
and the risk of severe renal or thyroid toxicity with long-term
use?
A. Atypical antipsychotics
B. Benzodiazepines
C. Lithium salts
D. Stimulants
Answer: C
Rationale:* Lithium has a very narrow therapeutic index
(typically 0.6 to 1.2 mEq/L for maintenance). Routine blood
level monitoring is mandatory to prevent toxicity, which can
lead to permanent renal impairment, hypothyroidism, and
neurological sequelae.
Question 5
Answers with Rationale 2026/2027
Question 1
Which of the following neurotransmitters is primarily implicated
in the pathophysiology of major depressive disorder and is the
primary target for selective serotonin reuptake inhibitors
(SSRIs)?
A. Dopamine
B. Serotonin
C. Norepinephrine
D. Gamma-aminobutyric acid
Answer: B
Rationale: Serotonin (5-hydroxytryptamine) plays a critical role
in mood regulation, sleep, and appetite. SSRIs block the
reuptake of serotonin into presynaptic neurons, increasing its
availability in the synaptic cleft to alleviate depressive
symptoms.
Question 2
,When initiating treatment with a selective serotonin reuptake
inhibitor (SSRI) in an adult patient with major depression, the
psychiatric-mental health nurse practitioner should counsel the
patient that the full therapeutic effect typically takes how long to
manifest?
A. 24 to 48 hours
B. 3 to 5 days
C. 2 weeks
D. 4 to 6 weeks
Answer: D
Rationale:* While some initial side effects and minor
improvements may occur early, significant and full therapeutic
clinical response from SSRIs generally requires 4 to 6 weeks of
consistent daily dosing due to downstream neuroplastic changes
and receptor desensitization.
Question 3
A patient currently taking an SSRI presents with confusion,
agitation, tachycardia, hypertension, diaphoresis, and
myoclonus. Which life-threatening condition should the
clinician immediately suspect?
A. Neuroleptic malignant syndrome
B. Serotonin syndrome
C. Anticholinergic toxicity
, D. Lithium toxicity
Answer: B
Rationale:* Serotonin syndrome is a potentially fatal condition
caused by excessive central and peripheral serotonergic activity,
classically characterized by the triad of mental status changes,
autonomic instability, and neuromuscular hyperactivity (such as
clonus and hyperreflexia).
Question 4
Which class of psychotropic medications requires routine
therapeutic drug monitoring due to a narrow margin of safety
and the risk of severe renal or thyroid toxicity with long-term
use?
A. Atypical antipsychotics
B. Benzodiazepines
C. Lithium salts
D. Stimulants
Answer: C
Rationale:* Lithium has a very narrow therapeutic index
(typically 0.6 to 1.2 mEq/L for maintenance). Routine blood
level monitoring is mandatory to prevent toxicity, which can
lead to permanent renal impairment, hypothyroidism, and
neurological sequelae.
Question 5
