TEST BANK + VERIFIED Q&A |
COMPLETE STUDY PDF
• This Barkley PMHNP Exam 2026 Revised Test Bank features verified questions
with highlighted correct answers and detailed EXPERT RATIONALE to reinforce
clinical reasoning.
• Study by attempting each question independently before revealing the answer,
then carefully read the EXPERT RATIONALE to solidify understanding of
psychiatric-mental health concepts.
1. A patient presents with depressed mood, anhedonia, sleep disturbances,
and fatigue for the past 3 weeks. Which additional symptom would confirm a
diagnosis of Major Depressive Disorder (MDD)?
A. Auditory hallucinations
B. Grandiosity
C. Flight of ideas
D. Pressured speech
E. Symptoms present for at least 2 weeks causing functional impairment
Correct Answer: E. Symptoms present for at least 2 weeks causing functional
impairment
EXPERT RATIONALE: DSM-5 criteria for MDD require at least 5 symptoms
present during the same 2-week period, with at least one being depressed mood or
anhedonia, causing clinically significant distress or functional impairment. The
other options are features of mania or psychosis.
2. Which medication is considered first-line pharmacotherapy for generalized
anxiety disorder (GAD) in adults?
A. Alprazolam
B. Haloperidol
,C. Lithium
D. Sertraline
E. Valproate
Correct Answer: D. Sertraline
EXPERT RATIONALE: SSRIs such as sertraline are considered first-line treatment
for GAD due to their efficacy and favorable side effect profile. Benzodiazepines like
alprazolam may be used short-term but carry risks of dependence. Lithium and
valproate are mood stabilizers; haloperidol is an antipsychotic.
3. A 28-year-old patient with bipolar I disorder is started on lithium. Which
baseline lab should be obtained before initiating therapy?
A. Liver function tests
B. Complete blood count
C. Thyroid function tests and renal function
D. Fasting lipid panel
E. Urine culture
Correct Answer: C. Thyroid function tests and renal function
EXPERT RATIONALE: Lithium is renally excreted and can cause hypothyroidism
and nephrotoxicity. Baseline thyroid function tests (TSH) and renal function (BUN,
creatinine) are mandatory before initiation and monitored regularly throughout
treatment.
4. Which of the following best describes the mechanism of action of SSRIs?
A. Block dopamine reuptake in the mesolimbic pathway
B. Inhibit monoamine oxidase
C. Selectively inhibit serotonin reuptake at the presynaptic terminal
,D. Block norepinephrine and dopamine reuptake equally
E. Antagonize serotonin at 5-HT2 receptors
Correct Answer: C. Selectively inhibit serotonin reuptake at the presynaptic
terminal
EXPERT RATIONALE: SSRIs work by selectively blocking the serotonin
transporter (SERT), preventing reuptake of serotonin into the presynaptic neuron,
thereby increasing serotonin availability in the synaptic cleft. This mechanism is
distinct from MAOIs, SNRIs, and serotonin antagonists.
5. A patient on clozapine develops a fever, sore throat, and absolute
neutrophil count (ANC) of 400/mm³. What is the most appropriate next step?
A. Reduce the clozapine dose by half
B. Add prophylactic antibiotics and continue clozapine
C. Switch to risperidone immediately
D. Order a repeat CBC in one week
E. Discontinue clozapine immediately and notify the REMS program
Correct Answer: E. Discontinue clozapine immediately and notify the REMS
program
EXPERT RATIONALE: An ANC below 500/mm³ indicates severe
neutropenia/agranulocytosis, a life-threatening adverse effect of clozapine. Per the
Clozapine REMS program, clozapine must be immediately discontinued and the
prescriber must report to the REMS registry. Continuing therapy risks fatal
infection.
6. A 35-year-old woman presents with recurrent unexpected panic attacks,
persistent worry about future attacks, and avoidance of public spaces for 5
months. What is the most likely diagnosis?
A. Social anxiety disorder
, B. Specific phobia
C. Panic disorder with agoraphobia
D. Generalized anxiety disorder
E. Acute stress disorder
Correct Answer: C. Panic disorder with agoraphobia
EXPERT RATIONALE: Recurrent unexpected panic attacks with persistent
concern about future attacks plus avoidance of situations where escape may be
difficult (agoraphobia) meets DSM-5 criteria for panic disorder with agoraphobia.
GAD lacks the episodic panic attacks; social anxiety is situation-specific.
7. Which psychotherapy is most evidence-based for the treatment of PTSD?
A. Psychodynamic therapy
B. Supportive therapy
C. Prolonged Exposure (PE) therapy
D. Interpersonal therapy
E. Dialectical behavior therapy
Correct Answer: C. Prolonged Exposure (PE) therapy
EXPERT RATIONALE: Prolonged Exposure therapy is a first-line, evidence-based
psychotherapy for PTSD endorsed by multiple guidelines including the VA/DoD. It
involves systematic confrontation of trauma-related memories and situations to
reduce avoidance and distress. CPT is also first-line; DBT is primarily for BPD.
8. A 16-year-old is brought in by parents for marked inattention,
hyperactivity, and impulsivity present since age 6, occurring in school and at
home. Which is the most appropriate first-line pharmacological treatment?
A. Atomoxetine