GEORGETTE PMHNP REVIEW 2026/2027 | VERIFIED QUESTIONS & ANSWERS | PSYCHIATRIC-MENTAL HEALTH NP BOARD EXAM PREP

GEORGETTE PMHNP REVIEW 2026/2027 |
VERIFIED QUESTIONS & ANSWERS |
PSYCHIATRIC-MENTAL HEALTH NP BOARD
EXAM PREP
GEORGETTE PMHNP REVIEW 2026/2027 | VERIFIED QUESTIONS & ANSWERS |
PSYCHIATRIC-MENTAL HEALTH NP BOARD EXAM PREP



DOCUMENT OVERVIEW

• This comprehensive -question exam preparation resource provides verified
practice questions across all core PMHNP board exam domains, with detailed
evidence-based rationales to build clinical confidence and knowledge retention

• Study this material by reviewing questions daily, focusing on rationales to
strengthen understanding of psychiatric-mental health concepts, pharmacology,
diagnostic criteria, and evidence-based nursing interventions for diverse patient
populations



QUESTIONS 1-50: NEUROBIOLOGY, NEUROCHEMISTRY &
PSYCHOPHARMACOLOGY FOUNDATIONS



QUESTION 1: Which neurotransmitter system is primarily implicated in the
pathophysiology of major depressive disorder?

A) Dopamine dysregulation exclusively

B) Serotonin, norepinephrine, and dopamine dysregulation

C) Acetylcholine excess

D) GABA deficiency alone

E) Glutamate hyperactivity without monoamine involvement

✓ CORRECT ANSWER: B) Serotonin, norepinephrine, and dopamine
dysregulation

,RATIONALE: The monoamine hypothesis of depression involves dysfunction of all
three monoamine neurotransmitters—serotonin, norepinephrine, and dopamine.
Most antidepressants target one or more of these systems. Serotonin dysregulation
affects mood and anxiety; norepinephrine influences attention and motivation;
dopamine impacts reward and motivation. While GABA and glutamate play roles,
they are not the primary systems implicated in the monoamine hypothesis.
Understanding this foundation is critical for psychopharmacology practice and
guides medication selection for depressed patients.



QUESTION 2: The hypothalamic-pituitary-adrenal (HPA) axis dysfunction is
most characteristic in which psychiatric condition?

A) Adjustment disorder

B) Specific phobia

C) Major depressive disorder with chronic stress

D) Social anxiety disorder

E) Acute stress disorder only

✓ CORRECT ANSWER: C) Major depressive disorder with chronic stress

RATIONALE: HPA axis hyperactivity and dysregulation is well-documented in major
depressive disorder, particularly with chronic stress and trauma history. This results
in elevated cortisol levels, which can be measured in depressed patients. The HPA
axis dysfunction contributes to cognitive impairment, sleep disturbance, and
immune suppression seen in depression. While acute stress may temporarily
activate the HPA axis, chronic dysregulation is most characteristic of depression.
This understanding informs the use of adjunctive agents and psychotherapeutic
interventions targeting stress response.



QUESTION 3: Which brain structure is primarily responsible for emotional
regulation and is notably reduced in volume in post-traumatic stress
disorder?

,A) Amygdala

B) Anterior cingulate cortex

C) Hippocampus

D) Dorsolateral prefrontal cortex

E) Thalamus

✓ CORRECT ANSWER: C) Hippocampus

RATIONALE: Hippocampal volume reduction is a well-established neurobiological
finding in PTSD, related to impaired memory consolidation and increased
vulnerability to trauma. The smaller hippocampus contributes to fragmented
trauma memories and difficulty contextualizing traumatic events. While the
amygdala shows hyperactivity and the prefrontal cortex shows hypoactivity in PTSD
(affecting emotional regulation and threat appraisal), hippocampal atrophy is the
most consistent structural finding. This knowledge guides trauma-informed
assessment and understanding of PTSD symptoms related to memory dysfunction.



QUESTION 4: Serotonin 1A (5-HT1A) receptor agonism is the mechanism of
action for which antidepressant class?

A) Tricyclic antidepressants

B) Monoamine oxidase inhibitors

C) Azapirones (buspirone)

D) Selective serotonin reuptake inhibitors

E) Serotonin-norepinephrine reuptake inhibitors

✓ CORRECT ANSWER: C) Azapirones (buspirone)

RATIONALE: Buspirone and other azapirones work primarily as 5-HT1A partial
agonists, making them effective for anxiety disorders and sometimes used
adjunctively in depression. They do not affect GABA receptors like benzodiazepines
do, providing anxiolysis without sedation or dependence risk. SSRIs block reuptake
rather than act as agonists; TCAs and MAOIs work through different mechanisms.

, Understanding this distinction is important when selecting medications for patients
requiring anxiety management without benzodiazepine risks.



QUESTION 5: Which medication class has an increased risk of hyponatremia
and the syndrome of inappropriate antidiuretic hormone secretion (SIADH)?

A) Antipsychotics

B) Mood stabilizers

C) Stimulants

D) Selective serotonin reuptake inhibitors and serotonin-norepinephrine reuptake
inhibitors

E) Anticonvulsants

✓ CORRECT ANSWER: D) Selective serotonin reuptake inhibitors and
serotonin-norepinephrine reuptake inhibitors

RATIONALE: SSRIs and SNRIs carry a significant risk for SIADH and hyponatremia,
particularly in the first 2 weeks of therapy and in older adults. Serotonin excess
affects ADH release from the posterior pituitary, leading to water retention and
dilutional hyponatremia. Risk factors include age over 65, female gender, low body
weight, and concurrent medications. Monitoring sodium levels and educating
patients about symptoms (confusion, headache, weakness) is essential. While other
medication classes have side effects, SIADH is uniquely associated with
serotonergic agents in psychiatry.



QUESTION 6: The therapeutic mechanism of lithium in bipolar disorder
involves which of the following?

A) Blocking dopamine receptors

B) Inhibiting inositol phosphate metabolism and affecting second-messenger
systems

C) Enhancing GABA transmission exclusively