NSG 552 Exam 1 – Wilkes Psychopharmacology Study Guide … 2026 Update • Verified Answers
✓ VERIFIED • 2026 UPDATE • 100% ACCURATE
NSG 552 Exam 1 – Wilkes Psychopharmacology
Study Guide 2026 UPDATE
Actual Exam Questions & Verified Answers
with Detailed Rationales
Document Type: Exam (Elaborations)
Academic Year:
Total Questions: 50 Multiple Choice
Includes: Correct Answers + Full Rationales
Status: Verified & Updated for 2026
Exam (Elaborations) • Actual Questions & Rationales Page 1
,NSG 552 Exam 1 – Wilkes Psychopharmacology Study Guide … 2026 Update • Verified Answers
Questions & Verified Answers
1. Which neurotransmitter is considered the primary inhibitory transmitter in the mammalian
central nervous system?
A. Glutamate
B. GABA
C. Dopamine
D. Norepinephrine
Answer: B
Rationale: Gamma-aminobutyric acid (GABA) is the chief inhibitory neurotransmitter, while Glutamate is the
primary excitatory one. Exam questions often test the ability to distinguish this concept from closely related
distractors, making a clear rationale essential for mastery. Applying this knowledge in clinical settings supports
safe, evidence-based practice and improves patient outcomes.
2. What is the primary mechanism of action for Selective Serotonin Reuptake Inhibitors
(SSRIs)?
A. Antagonizing 5-HT2A receptors
B. Inhibiting the SERT protein
C. Stimulating GABA production
D. Blocking dopamine reuptake
Answer: B
Rationale: SSRIs work by blocking the serotonin transporter (SERT), leading to increased serotonin levels in
the synaptic cleft. Recognizing this principle allows the nurse to prioritize care, anticipate complications, and
provide accurate patient education. Exam questions often test the ability to distinguish this concept from closely
related distractors, making a clear rationale essential for mastery.
3. Which Cytochrome P450 enzyme is responsible for metabolizing approximately 50% of all
clinically used drugs?
A. CYP2D6
B. CYP1A2
C. CYP3A4
D. CYP2C19
Answer: C
Rationale: CYP3A4 is the most prevalent enzyme in the liver and is responsible for the metabolism of the
majority of psychiatric and non-psychiatric medications. Recognizing this principle allows the nurse to prioritize
care, anticipate complications, and provide accurate patient education. Exam questions often test the ability to
distinguish this concept from closely related distractors, making a clear rationale essential for mastery.
Exam (Elaborations) • Actual Questions & Rationales Page 2
, NSG 552 Exam 1 – Wilkes Psychopharmacology Study Guide … 2026 Update • Verified Answers
4. A patient taking an MAOI must avoid foods high in tyramine to prevent which medical
emergency?
A. Serotonin Syndrome
B. Agranulocytosis
C. Neuroleptic Malignant Syndrome
D. Hypertensive Crisis
Answer: D
Rationale: Tyramine acts as a catecholamine releasing agent; when MAO is inhibited, tyramine can cause a
massive release of norepinephrine, leading to a hypertensive crisis. This is an important clinical concept
because selecting the correct answer (D) requires understanding both the pathophysiology and the practical
nursing implications.
5. How many half-lives does it typically take for a drug to reach steady-state plasma
concentrations?
A. 1 to 2
B. 7 to 8
C. 10 to 12
D. 4 to 5
Answer: D
Rationale: Pharmacokinetically, it takes approximately 4 to 5 half-lives for a drug’s elimination to equal its
intake, achieving steady state. Applying this knowledge in clinical settings supports safe, evidence-based
practice and improves patient outcomes. This is an important clinical concept because selecting the correct
answer (D) requires understanding both the pathophysiology and the practical nursing implications.
6. Which dopamine pathway is primarily associated with the development of Extrapyramidal
Symptoms (EPS) when D2 receptors are blocked?
A. Mesolimbic pathway
B. Nigrostriatal pathway
C. Mesocortical pathway
D. Tuberoinfundibular pathway
Answer: B
Rationale: The Nigrostriatal pathway controls motor function; blockade of D2 receptors here results in
movement disorders like EPS. Recognizing this principle allows the nurse to prioritize care, anticipate
complications, and provide accurate patient education. Exam questions often test the ability to distinguish this
concept from closely related distractors, making a clear rationale essential for mastery.
Exam (Elaborations) • Actual Questions & Rationales Page 3
✓ VERIFIED • 2026 UPDATE • 100% ACCURATE
NSG 552 Exam 1 – Wilkes Psychopharmacology
Study Guide 2026 UPDATE
Actual Exam Questions & Verified Answers
with Detailed Rationales
Document Type: Exam (Elaborations)
Academic Year:
Total Questions: 50 Multiple Choice
Includes: Correct Answers + Full Rationales
Status: Verified & Updated for 2026
Exam (Elaborations) • Actual Questions & Rationales Page 1
,NSG 552 Exam 1 – Wilkes Psychopharmacology Study Guide … 2026 Update • Verified Answers
Questions & Verified Answers
1. Which neurotransmitter is considered the primary inhibitory transmitter in the mammalian
central nervous system?
A. Glutamate
B. GABA
C. Dopamine
D. Norepinephrine
Answer: B
Rationale: Gamma-aminobutyric acid (GABA) is the chief inhibitory neurotransmitter, while Glutamate is the
primary excitatory one. Exam questions often test the ability to distinguish this concept from closely related
distractors, making a clear rationale essential for mastery. Applying this knowledge in clinical settings supports
safe, evidence-based practice and improves patient outcomes.
2. What is the primary mechanism of action for Selective Serotonin Reuptake Inhibitors
(SSRIs)?
A. Antagonizing 5-HT2A receptors
B. Inhibiting the SERT protein
C. Stimulating GABA production
D. Blocking dopamine reuptake
Answer: B
Rationale: SSRIs work by blocking the serotonin transporter (SERT), leading to increased serotonin levels in
the synaptic cleft. Recognizing this principle allows the nurse to prioritize care, anticipate complications, and
provide accurate patient education. Exam questions often test the ability to distinguish this concept from closely
related distractors, making a clear rationale essential for mastery.
3. Which Cytochrome P450 enzyme is responsible for metabolizing approximately 50% of all
clinically used drugs?
A. CYP2D6
B. CYP1A2
C. CYP3A4
D. CYP2C19
Answer: C
Rationale: CYP3A4 is the most prevalent enzyme in the liver and is responsible for the metabolism of the
majority of psychiatric and non-psychiatric medications. Recognizing this principle allows the nurse to prioritize
care, anticipate complications, and provide accurate patient education. Exam questions often test the ability to
distinguish this concept from closely related distractors, making a clear rationale essential for mastery.
Exam (Elaborations) • Actual Questions & Rationales Page 2
, NSG 552 Exam 1 – Wilkes Psychopharmacology Study Guide … 2026 Update • Verified Answers
4. A patient taking an MAOI must avoid foods high in tyramine to prevent which medical
emergency?
A. Serotonin Syndrome
B. Agranulocytosis
C. Neuroleptic Malignant Syndrome
D. Hypertensive Crisis
Answer: D
Rationale: Tyramine acts as a catecholamine releasing agent; when MAO is inhibited, tyramine can cause a
massive release of norepinephrine, leading to a hypertensive crisis. This is an important clinical concept
because selecting the correct answer (D) requires understanding both the pathophysiology and the practical
nursing implications.
5. How many half-lives does it typically take for a drug to reach steady-state plasma
concentrations?
A. 1 to 2
B. 7 to 8
C. 10 to 12
D. 4 to 5
Answer: D
Rationale: Pharmacokinetically, it takes approximately 4 to 5 half-lives for a drug’s elimination to equal its
intake, achieving steady state. Applying this knowledge in clinical settings supports safe, evidence-based
practice and improves patient outcomes. This is an important clinical concept because selecting the correct
answer (D) requires understanding both the pathophysiology and the practical nursing implications.
6. Which dopamine pathway is primarily associated with the development of Extrapyramidal
Symptoms (EPS) when D2 receptors are blocked?
A. Mesolimbic pathway
B. Nigrostriatal pathway
C. Mesocortical pathway
D. Tuberoinfundibular pathway
Answer: B
Rationale: The Nigrostriatal pathway controls motor function; blockade of D2 receptors here results in
movement disorders like EPS. Recognizing this principle allows the nurse to prioritize care, anticipate
complications, and provide accurate patient education. Exam questions often test the ability to distinguish this
concept from closely related distractors, making a clear rationale essential for mastery.
Exam (Elaborations) • Actual Questions & Rationales Page 3
