PMHNP EXAM QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A
|LATEST EXAM UPDATE 2026/2027
SECTION ONE: QUESTIONS 1–100
1. A 32-year-old female presents with a history of recurrent, unexpected panic attacks, accompanied by
persistent worry about having another attack and maladaptive behavioral changes. Which of the following is
the most appropriate initial pharmacotherapeutic intervention?
A. Sertraline
B. Alprazolam
C. Propranolol
D. Buspirone
🟢 A. Sertraline
🔴 RATIONALE: SSRIs like sertraline are the first-line pharmacotherapy for panic disorder due to their efficacy
and favorable side-effect profile. Benzodiazepines (e.g., alprazolam) are generally reserved for short-term or
adjunctive use due to dependence risk. Propranolol is more effective for performance anxiety, and buspirone is
not FDA-approved for panic disorder.
2. According to the biopsychosocial model, which of the following best illustrates a biological factor
contributing to the development of major depressive disorder (MDD)?
A. Childhood trauma
B. Dysregulation of the hypothalamic-pituitary-adrenal (HPA) axis
C. Lack of social support
D. Cognitive distortions
,🟢 B. Dysregulation of the hypothalamic-pituitary-adrenal (HPA) axis
🔴 RATIONALE: The biopsychosocial model posits that biological, psychological, and social factors all contribute
to illness. HPA axis dysregulation is a well-established biological factor in MDD. Childhood trauma is a
psychosocial factor, lack of social support is social, and cognitive distortions are psychological.
3. A 45-year-old male with a history of alcohol use disorder is prescribed naltrexone. What is the primary
mechanism of action of this medication?
A. Agonist at dopamine D2 receptors
B. Antagonist at mu-opioid receptors
C. Antagonist at NMDA receptors
D. Partial agonist at GABA-A receptors
🟢 B. Antagonist at mu-opioid receptors
🔴 RATIONALE: Naltrexone is a competitive antagonist at mu-opioid receptors. It reduces the rewarding effects
of alcohol and opioids by blocking the endogenous opioid system, which is a key pathway in the brain's reward
circuitry.
4. A 28-year-old female reports persistent, intrusive thoughts about contamination, followed by compulsive
hand-washing rituals that take up several hours a day. She acknowledges the thoughts are excessive but
feels unable to control them. What is the most accurate diagnosis?
A. Illness Anxiety Disorder
B. Obsessive-Compulsive Disorder (OCD)
C. Generalized Anxiety Disorder (GAD)
D. Specific Phobia
🟢 B. Obsessive-Compulsive Disorder (OCD)
🔴 RATIONALE: OCD is characterized by obsessions (intrusive, unwanted thoughts) and compulsions (repetitive
,behaviors) that are time-consuming and cause significant distress. The patient’s insight into the excessiveness of
her thoughts is consistent with OCD.
5. A patient with schizophrenia is experiencing auditory hallucinations and delusions. Which of the following
neurotransmitter systems is primarily implicated in these positive symptoms?
A. Dopamine
B. Serotonin
C. Norepinephrine
D. Acetylcholine
🟢 A. Dopamine
🔴 RATIONALE: The dopamine hypothesis of schizophrenia posits that hyperactivity of dopamine in the
mesolimbic pathway is primarily responsible for positive symptoms like hallucinations and delusions.
Antipsychotics exert their therapeutic effect by blocking dopamine D2 receptors.
6. A 16-year-old patient is brought to the clinic by their parents due to a sudden onset of significant weight
loss, a distorted body image, and an intense fear of gaining weight. The patient's heart rate is 45 bpm and
blood pressure is 90/60 mmHg. What is the priority intervention?
A. Initiate fluoxetine
B. Refer for family therapy
C. Order an EKG and consider hospitalization for medical stabilization
D. Recommend a nutritional supplement
🟢 C. Order an EKG and consider hospitalization for medical stabilization
🔴 RATIONALE: The patient is presenting with signs of severe malnutrition (bradycardia, hypotension)
consistent with anorexia nervosa. The priority is medical stabilization, which may require hospitalization. An EKG
is critical to assess for cardiac abnormalities like prolonged QT interval, which can be life-threatening.
, 7. A 52-year-old man with treatment-resistant depression has been on phenelzine for 6 months. He presents
to the emergency department with a severe headache, palpitations, and nausea. He reports eating aged
cheddar cheese for lunch. Which of the following best explains his symptoms?
A. Serotonin syndrome
B. Hypertensive crisis
C. Anticholinergic toxicity
D. Neuroleptic malignant syndrome
🟢 B. Hypertensive crisis
🔴 RATIONALE: Phenelzine is a monoamine oxidase inhibitor (MAOI). Tyramine-rich foods (e.g., aged cheese)
can displace norepinephrine from storage vesicles, leading to a rapid and dangerous increase in blood pressure
(hypertensive crisis). This is a classic MAOI-food interaction.
8. A 65-year-old patient with Alzheimer's disease is exhibiting increasing agitation and aggression.
According to the BEERS Criteria, which of the following medications should be avoided in this patient?
A. Donepezil
B. Memantine
C. Haloperidol
D. Quetiapine
🟢 D. Quetiapine
🔴 RATIONALE: The BEERS Criteria identifies antipsychotics (including quetiapine) as potentially inappropriate
for older adults with dementia, as they increase the risk of cerebrovascular events and mortality. Antipsychotics
should only be used when behavioral symptoms are severe and non-pharmacological interventions have failed.
9. A 38-year-old female reports a 2-week history of depressed mood, anhedonia, hypersomnia, and a
significant increase in appetite. She reports that her symptoms worsen during the winter months. Which of
the following is the most appropriate initial recommendation?
|LATEST EXAM UPDATE 2026/2027
SECTION ONE: QUESTIONS 1–100
1. A 32-year-old female presents with a history of recurrent, unexpected panic attacks, accompanied by
persistent worry about having another attack and maladaptive behavioral changes. Which of the following is
the most appropriate initial pharmacotherapeutic intervention?
A. Sertraline
B. Alprazolam
C. Propranolol
D. Buspirone
🟢 A. Sertraline
🔴 RATIONALE: SSRIs like sertraline are the first-line pharmacotherapy for panic disorder due to their efficacy
and favorable side-effect profile. Benzodiazepines (e.g., alprazolam) are generally reserved for short-term or
adjunctive use due to dependence risk. Propranolol is more effective for performance anxiety, and buspirone is
not FDA-approved for panic disorder.
2. According to the biopsychosocial model, which of the following best illustrates a biological factor
contributing to the development of major depressive disorder (MDD)?
A. Childhood trauma
B. Dysregulation of the hypothalamic-pituitary-adrenal (HPA) axis
C. Lack of social support
D. Cognitive distortions
,🟢 B. Dysregulation of the hypothalamic-pituitary-adrenal (HPA) axis
🔴 RATIONALE: The biopsychosocial model posits that biological, psychological, and social factors all contribute
to illness. HPA axis dysregulation is a well-established biological factor in MDD. Childhood trauma is a
psychosocial factor, lack of social support is social, and cognitive distortions are psychological.
3. A 45-year-old male with a history of alcohol use disorder is prescribed naltrexone. What is the primary
mechanism of action of this medication?
A. Agonist at dopamine D2 receptors
B. Antagonist at mu-opioid receptors
C. Antagonist at NMDA receptors
D. Partial agonist at GABA-A receptors
🟢 B. Antagonist at mu-opioid receptors
🔴 RATIONALE: Naltrexone is a competitive antagonist at mu-opioid receptors. It reduces the rewarding effects
of alcohol and opioids by blocking the endogenous opioid system, which is a key pathway in the brain's reward
circuitry.
4. A 28-year-old female reports persistent, intrusive thoughts about contamination, followed by compulsive
hand-washing rituals that take up several hours a day. She acknowledges the thoughts are excessive but
feels unable to control them. What is the most accurate diagnosis?
A. Illness Anxiety Disorder
B. Obsessive-Compulsive Disorder (OCD)
C. Generalized Anxiety Disorder (GAD)
D. Specific Phobia
🟢 B. Obsessive-Compulsive Disorder (OCD)
🔴 RATIONALE: OCD is characterized by obsessions (intrusive, unwanted thoughts) and compulsions (repetitive
,behaviors) that are time-consuming and cause significant distress. The patient’s insight into the excessiveness of
her thoughts is consistent with OCD.
5. A patient with schizophrenia is experiencing auditory hallucinations and delusions. Which of the following
neurotransmitter systems is primarily implicated in these positive symptoms?
A. Dopamine
B. Serotonin
C. Norepinephrine
D. Acetylcholine
🟢 A. Dopamine
🔴 RATIONALE: The dopamine hypothesis of schizophrenia posits that hyperactivity of dopamine in the
mesolimbic pathway is primarily responsible for positive symptoms like hallucinations and delusions.
Antipsychotics exert their therapeutic effect by blocking dopamine D2 receptors.
6. A 16-year-old patient is brought to the clinic by their parents due to a sudden onset of significant weight
loss, a distorted body image, and an intense fear of gaining weight. The patient's heart rate is 45 bpm and
blood pressure is 90/60 mmHg. What is the priority intervention?
A. Initiate fluoxetine
B. Refer for family therapy
C. Order an EKG and consider hospitalization for medical stabilization
D. Recommend a nutritional supplement
🟢 C. Order an EKG and consider hospitalization for medical stabilization
🔴 RATIONALE: The patient is presenting with signs of severe malnutrition (bradycardia, hypotension)
consistent with anorexia nervosa. The priority is medical stabilization, which may require hospitalization. An EKG
is critical to assess for cardiac abnormalities like prolonged QT interval, which can be life-threatening.
, 7. A 52-year-old man with treatment-resistant depression has been on phenelzine for 6 months. He presents
to the emergency department with a severe headache, palpitations, and nausea. He reports eating aged
cheddar cheese for lunch. Which of the following best explains his symptoms?
A. Serotonin syndrome
B. Hypertensive crisis
C. Anticholinergic toxicity
D. Neuroleptic malignant syndrome
🟢 B. Hypertensive crisis
🔴 RATIONALE: Phenelzine is a monoamine oxidase inhibitor (MAOI). Tyramine-rich foods (e.g., aged cheese)
can displace norepinephrine from storage vesicles, leading to a rapid and dangerous increase in blood pressure
(hypertensive crisis). This is a classic MAOI-food interaction.
8. A 65-year-old patient with Alzheimer's disease is exhibiting increasing agitation and aggression.
According to the BEERS Criteria, which of the following medications should be avoided in this patient?
A. Donepezil
B. Memantine
C. Haloperidol
D. Quetiapine
🟢 D. Quetiapine
🔴 RATIONALE: The BEERS Criteria identifies antipsychotics (including quetiapine) as potentially inappropriate
for older adults with dementia, as they increase the risk of cerebrovascular events and mortality. Antipsychotics
should only be used when behavioral symptoms are severe and non-pharmacological interventions have failed.
9. A 38-year-old female reports a 2-week history of depressed mood, anhedonia, hypersomnia, and a
significant increase in appetite. She reports that her symptoms worsen during the winter months. Which of
the following is the most appropriate initial recommendation?
