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NRNP 6675 Midterm Exam Psychiatric Mental
Health Nurse Practitioner 2026/2027 Actual Exam
with Verified Answers and Detailed Rationales
Question 1
What is Neuroleptic Malignant Syndrome?
Correct Answer: Severe reaction to antipsychotics, includes muscle rigidity.
Rationale:
1. Neuroleptic Malignant Syndrome (NMS) is a life-threatening
neurological disorder.
2. It is most commonly associated with antipsychotic medications.
3. Key features include muscle rigidity, hyperthermia, and autonomic
instability.
4. Early recognition and treatment are critical to prevent complications.
Question 2
What is D2 Blockade?
Correct Answer: Inhibition of dopamine receptors in the brain.
Rationale:
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1. D2 blockade refers to the inhibition of dopamine D2 receptors.
2. This mechanism is primarily responsible for the antipsychotic effects of
medications.
3. D2 blockade is also associated with extrapyramidal side effects.
4. Understanding D2 blockade helps explain both therapeutic and adverse
effects.
Question 3
What is the Mesocortical Pathway?
Correct Answer: Dopamine pathway affecting cognition and emotion.
Rationale:
1. The mesocortical pathway projects from the ventral tegmental area to
the prefrontal cortex.
2. It plays a key role in cognitive functions such as working memory and
attention.
3. This pathway also influences emotional regulation and motivation.
4. Dysfunction in this pathway is linked to negative symptoms of
schizophrenia.
Question 4
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What is Phencyclidine (PCP)?
Correct Answer: Dissociative drug blocking NMDA receptors.
Rationale:
1. PCP is a dissociative anesthetic that blocks NMDA receptors.
2. It can cause hallucinations, agitation, and psychosis.
3. NMDA receptor antagonism is the primary mechanism of action.
4. PCP use can lead to severe behavioral disturbances requiring
emergency intervention.
Question 5
What is Ketamine?
Correct Answer: Anesthetic with NMDA receptor antagonism effects.
Rationale:
1. Ketamine is an NMDA receptor antagonist used for anesthesia and pain
management.
2. It has rapid-acting antidepressant effects in treatment-resistant
depression.
3. Dissociative effects are a common adverse reaction.
4. Ketamine is also a drug of abuse with potential for addiction.
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Question 6
What is Substance Intoxication?
Correct Answer: Syndrome from recent substance ingestion.
Rationale:
1. Substance intoxication is a reversible syndrome caused by recent
substance use.
2. Symptoms vary by substance but include altered mental status and
behavior.
3. Intoxication typically resolves as the substance is metabolized.
4. Diagnosis requires evidence of recent ingestion and clinically significant
behavioral changes.
Question 7
What is Tardive Dyskinesia?
Correct Answer: Involuntary movements, often due to antipsychotics.
Rationale:
1. Tardive dyskinesia is characterized by involuntary, repetitive
movements.
2. It is most commonly caused by long-term antipsychotic use.
3. Movements often affect the face, tongue, and limbs.
NRNP 6675 Midterm Exam Psychiatric Mental
Health Nurse Practitioner 2026/2027 Actual Exam
with Verified Answers and Detailed Rationales
Question 1
What is Neuroleptic Malignant Syndrome?
Correct Answer: Severe reaction to antipsychotics, includes muscle rigidity.
Rationale:
1. Neuroleptic Malignant Syndrome (NMS) is a life-threatening
neurological disorder.
2. It is most commonly associated with antipsychotic medications.
3. Key features include muscle rigidity, hyperthermia, and autonomic
instability.
4. Early recognition and treatment are critical to prevent complications.
Question 2
What is D2 Blockade?
Correct Answer: Inhibition of dopamine receptors in the brain.
Rationale:
,2|Page
1. D2 blockade refers to the inhibition of dopamine D2 receptors.
2. This mechanism is primarily responsible for the antipsychotic effects of
medications.
3. D2 blockade is also associated with extrapyramidal side effects.
4. Understanding D2 blockade helps explain both therapeutic and adverse
effects.
Question 3
What is the Mesocortical Pathway?
Correct Answer: Dopamine pathway affecting cognition and emotion.
Rationale:
1. The mesocortical pathway projects from the ventral tegmental area to
the prefrontal cortex.
2. It plays a key role in cognitive functions such as working memory and
attention.
3. This pathway also influences emotional regulation and motivation.
4. Dysfunction in this pathway is linked to negative symptoms of
schizophrenia.
Question 4
,3|Page
What is Phencyclidine (PCP)?
Correct Answer: Dissociative drug blocking NMDA receptors.
Rationale:
1. PCP is a dissociative anesthetic that blocks NMDA receptors.
2. It can cause hallucinations, agitation, and psychosis.
3. NMDA receptor antagonism is the primary mechanism of action.
4. PCP use can lead to severe behavioral disturbances requiring
emergency intervention.
Question 5
What is Ketamine?
Correct Answer: Anesthetic with NMDA receptor antagonism effects.
Rationale:
1. Ketamine is an NMDA receptor antagonist used for anesthesia and pain
management.
2. It has rapid-acting antidepressant effects in treatment-resistant
depression.
3. Dissociative effects are a common adverse reaction.
4. Ketamine is also a drug of abuse with potential for addiction.
, 4|Page
Question 6
What is Substance Intoxication?
Correct Answer: Syndrome from recent substance ingestion.
Rationale:
1. Substance intoxication is a reversible syndrome caused by recent
substance use.
2. Symptoms vary by substance but include altered mental status and
behavior.
3. Intoxication typically resolves as the substance is metabolized.
4. Diagnosis requires evidence of recent ingestion and clinically significant
behavioral changes.
Question 7
What is Tardive Dyskinesia?
Correct Answer: Involuntary movements, often due to antipsychotics.
Rationale:
1. Tardive dyskinesia is characterized by involuntary, repetitive
movements.
2. It is most commonly caused by long-term antipsychotic use.
3. Movements often affect the face, tongue, and limbs.
