NRNP 6635 Midterm Exam | Walden University | 300
Questions with Correct Answers and Detailed
Rationales | Latest 2026/2027 | A+ Grade
Section 1: Foundations of Psychopathology and Diagnostic
Reasoning (Questions 1–50)
1. A PMHNP is conducting a comprehensive psychiatric
evaluation. Which of the following best describes the primary
purpose of the Mental Status Examination (MSE)?
A. To establish a definitive DSM-5-TR diagnosis
B. To provide an objective, systematic assessment of a patient's current cognitive,
emotional, and behavioral functioning
C. To evaluate the patient's response to psychotropic medications
D. To determine the patient's insight into their psychiatric condition
Answer: B
Rationale: The Mental Status Examination (MSE) is a structured, systematic method for
observing and describing a patient's current state of mind, covering appearance,
behavior, speech, mood, affect, thought process, thought content, perception, cognition,
and insight/judgment. While it contributes to diagnosis, it is not used in isolation to
establish a definitive diagnosis. Its primary purpose is to provide an objective snapshot
of current functioning, which is essential for diagnostic formulation, treatment planning,
and tracking clinical changes over time.
,2. According to the DSM-5-TR, a diagnosis of Major Depressive
Disorder (MDD) requires the presence of at least five symptoms,
including either depressed mood or anhedonia, occurring for at
least:
A. One week
B. Two weeks
C. Four weeks
D. Six weeks
Answer: B
Rationale: The DSM-5-TR criteria for Major Depressive Disorder require that at least five
symptoms (including at least one of depressed mood or anhedonia) be present during
the same two-week period, representing a change from previous functioning. Symptoms
must cause clinically significant distress or impairment in social, occupational, or other
important areas of functioning. The two-week duration is a critical temporal criterion
that distinguishes MDD from normal bereavement or transient mood fluctuations.
3. In the context of psychopharmacology, what is the primary
mechanism of action of Selective Serotonin Reuptake Inhibitors
(SSRIs)?
A. Blockade of dopamine D2 receptors
B. Inhibition of the reuptake of serotonin at the synaptic cleft
C. Antagonism of N-methyl-D-aspartate (NMDA) receptors
D. Enhancement of GABAergic neurotransmission
Answer: B
Rationale: SSRIs such as fluoxetine, sertraline, and escitalopram exert their therapeutic
effect by selectively inhibiting the serotonin transporter (SERT) on the presynaptic
neuron. This blockade prevents the reuptake of serotonin from the synaptic cleft into
the presynaptic neuron, increasing the concentration of serotonin available to bind to
postsynaptic receptors. This mechanism enhances serotonergic neurotransmission,
which is implicated in the pathophysiology of depression, anxiety, and other disorders.
,4. A 45-year-old patient with schizophrenia has been treated with
haloperidol 10 mg daily for 8 weeks with partial improvement.
The patient develops akathisia. Which of the following strategies
is most consistent with current evidence-based guidelines?
A. Add benztropine 2 mg twice daily
B. Switch to aripiprazole 15 mg daily
C. Reduce haloperidol to 5 mg daily
D. Add propranolol 30 mg daily
Answer: D
Rationale: Akathisia is a common and distressing extrapyramidal side effect of
antipsychotic medications characterized by subjective restlessness and an inability to sit
still. First-line treatment for antipsychotic-induced akathisia includes beta-blockers such
as propranolol (30-80 mg/day in divided doses). Anticholinergics like benztropine are
more effective for dystonia and parkinsonism, not akathisia. While switching to a lower-
risk antipsychotic like aripiprazole is an option, it is not first-line, and aripiprazole itself
can cause akathisia. Dose reduction may compromise efficacy, and guidelines generally
recommend adding a specific treatment for akathisia before reducing the dose.
5. Which of the following patient evaluation scales is used to
monitor for the development of tardive dyskinesia in patients
prescribed antipsychotic medications?
A. Abnormal Involuntary Movement Scale (AIMS)
B. Hamilton Depression Rating Scale (HAM-D)
C. Young Mania Rating Scale (YMRS)
D. Montreal Cognitive Assessment (MoCA)
Answer: A
, Rationale: The Abnormal Involuntary Movement Scale (AIMS) is a 12-item instrument
specifically designed to detect and monitor the severity of tardive dyskinesia (TD) in
patients taking antipsychotic medications. TD is a potentially irreversible movement
disorder characterized by involuntary, repetitive movements, often of the face, mouth,
and tongue. The AIMS is the gold-standard tool for monitoring TD, and current
guidelines recommend regular AIMS assessments for patients on long-term
antipsychotic therapy.
6. The biopsychosocial model, which is foundational to psychiatric
assessment and treatment, posits that mental health disorders
result from the interaction of:
A. Genetic factors only
B. Biological, psychological, and social factors
C. Intrapsychic conflicts and developmental stages
D. Neurochemical imbalances and cognitive distortions
Answer: B
Rationale: The biopsychosocial model, first articulated by George Engel, is a holistic
framework that conceptualizes mental health disorders as arising from the complex
interplay of biological (e.g., genetics, neurochemistry, physical health), psychological
(e.g., personality, coping styles, cognitive patterns), and social (e.g., family dynamics,
culture, socioeconomic status, support systems) factors. This model is central to the
PMHNP's approach to psychiatric evaluation and treatment planning, emphasizing that
no single factor is sufficient to explain the etiology or course of mental illness.
7. Which of the following is an example of a positive symptom of
schizophrenia?
A. Avolition
B. Alogia
Questions with Correct Answers and Detailed
Rationales | Latest 2026/2027 | A+ Grade
Section 1: Foundations of Psychopathology and Diagnostic
Reasoning (Questions 1–50)
1. A PMHNP is conducting a comprehensive psychiatric
evaluation. Which of the following best describes the primary
purpose of the Mental Status Examination (MSE)?
A. To establish a definitive DSM-5-TR diagnosis
B. To provide an objective, systematic assessment of a patient's current cognitive,
emotional, and behavioral functioning
C. To evaluate the patient's response to psychotropic medications
D. To determine the patient's insight into their psychiatric condition
Answer: B
Rationale: The Mental Status Examination (MSE) is a structured, systematic method for
observing and describing a patient's current state of mind, covering appearance,
behavior, speech, mood, affect, thought process, thought content, perception, cognition,
and insight/judgment. While it contributes to diagnosis, it is not used in isolation to
establish a definitive diagnosis. Its primary purpose is to provide an objective snapshot
of current functioning, which is essential for diagnostic formulation, treatment planning,
and tracking clinical changes over time.
,2. According to the DSM-5-TR, a diagnosis of Major Depressive
Disorder (MDD) requires the presence of at least five symptoms,
including either depressed mood or anhedonia, occurring for at
least:
A. One week
B. Two weeks
C. Four weeks
D. Six weeks
Answer: B
Rationale: The DSM-5-TR criteria for Major Depressive Disorder require that at least five
symptoms (including at least one of depressed mood or anhedonia) be present during
the same two-week period, representing a change from previous functioning. Symptoms
must cause clinically significant distress or impairment in social, occupational, or other
important areas of functioning. The two-week duration is a critical temporal criterion
that distinguishes MDD from normal bereavement or transient mood fluctuations.
3. In the context of psychopharmacology, what is the primary
mechanism of action of Selective Serotonin Reuptake Inhibitors
(SSRIs)?
A. Blockade of dopamine D2 receptors
B. Inhibition of the reuptake of serotonin at the synaptic cleft
C. Antagonism of N-methyl-D-aspartate (NMDA) receptors
D. Enhancement of GABAergic neurotransmission
Answer: B
Rationale: SSRIs such as fluoxetine, sertraline, and escitalopram exert their therapeutic
effect by selectively inhibiting the serotonin transporter (SERT) on the presynaptic
neuron. This blockade prevents the reuptake of serotonin from the synaptic cleft into
the presynaptic neuron, increasing the concentration of serotonin available to bind to
postsynaptic receptors. This mechanism enhances serotonergic neurotransmission,
which is implicated in the pathophysiology of depression, anxiety, and other disorders.
,4. A 45-year-old patient with schizophrenia has been treated with
haloperidol 10 mg daily for 8 weeks with partial improvement.
The patient develops akathisia. Which of the following strategies
is most consistent with current evidence-based guidelines?
A. Add benztropine 2 mg twice daily
B. Switch to aripiprazole 15 mg daily
C. Reduce haloperidol to 5 mg daily
D. Add propranolol 30 mg daily
Answer: D
Rationale: Akathisia is a common and distressing extrapyramidal side effect of
antipsychotic medications characterized by subjective restlessness and an inability to sit
still. First-line treatment for antipsychotic-induced akathisia includes beta-blockers such
as propranolol (30-80 mg/day in divided doses). Anticholinergics like benztropine are
more effective for dystonia and parkinsonism, not akathisia. While switching to a lower-
risk antipsychotic like aripiprazole is an option, it is not first-line, and aripiprazole itself
can cause akathisia. Dose reduction may compromise efficacy, and guidelines generally
recommend adding a specific treatment for akathisia before reducing the dose.
5. Which of the following patient evaluation scales is used to
monitor for the development of tardive dyskinesia in patients
prescribed antipsychotic medications?
A. Abnormal Involuntary Movement Scale (AIMS)
B. Hamilton Depression Rating Scale (HAM-D)
C. Young Mania Rating Scale (YMRS)
D. Montreal Cognitive Assessment (MoCA)
Answer: A
, Rationale: The Abnormal Involuntary Movement Scale (AIMS) is a 12-item instrument
specifically designed to detect and monitor the severity of tardive dyskinesia (TD) in
patients taking antipsychotic medications. TD is a potentially irreversible movement
disorder characterized by involuntary, repetitive movements, often of the face, mouth,
and tongue. The AIMS is the gold-standard tool for monitoring TD, and current
guidelines recommend regular AIMS assessments for patients on long-term
antipsychotic therapy.
6. The biopsychosocial model, which is foundational to psychiatric
assessment and treatment, posits that mental health disorders
result from the interaction of:
A. Genetic factors only
B. Biological, psychological, and social factors
C. Intrapsychic conflicts and developmental stages
D. Neurochemical imbalances and cognitive distortions
Answer: B
Rationale: The biopsychosocial model, first articulated by George Engel, is a holistic
framework that conceptualizes mental health disorders as arising from the complex
interplay of biological (e.g., genetics, neurochemistry, physical health), psychological
(e.g., personality, coping styles, cognitive patterns), and social (e.g., family dynamics,
culture, socioeconomic status, support systems) factors. This model is central to the
PMHNP's approach to psychiatric evaluation and treatment planning, emphasizing that
no single factor is sufficient to explain the etiology or course of mental illness.
7. Which of the following is an example of a positive symptom of
schizophrenia?
A. Avolition
B. Alogia
