MSN 675 AEPA Comprehensive Final Examination - Nothern Kentucky University
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A 38-year-old veteran presents with chronic symptoms following exposure to combat trauma. He reports recurrent nightmares, insomnia, hypervigilance, and intrusive memories that occur involuntarily and cause significant distress. Despite being in a safe environment, he states he "never feels safe" and is unable to relax. Which of the following treatment strategies is MOST appropriate for targeting his trauma-related nightmares and sleep disturbances?
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High-dose Ativan to help reduce nighttime hyperarousal and help improve patient's sleep quality
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Prazosin to reduce trauma-related nightmares and trazodone to help improve sleep quality
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Antipsychotic monotherapy as first-line treatment for PTSD nightmares
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Stimulant medication to reduce daytime fatigue, improve alertness and assist with rest at bedtime
Explanation
Explanation:
Correct Answer: (B) Prazosin to reduce trauma-related nightmares and trazodone to help improve sleep quality
Prazosin, an alpha-1 blocker, has strong evidence supporting its use in reducing trauma-related nightmares in PTSD, and trazodone is commonly used as an adjunct to improve overall sleep quality, making this combination the most appropriate targeted approach for this patient's symptoms.
Why Other Options are Incorrect:
A. High-dose benzodiazepines like Ativan are not recommended for PTSD due to risk of dependence, lack of efficacy for core PTSD symptoms, and potential to worsen outcomes.
C. Antipsychotics are not first-line treatment for PTSD nightmares; prazosin has stronger evidence specifically for this symptom.
D. Stimulant medications are not indicated for PTSD-related sleep disturbances and would not address nightmares; they could worsen hyperarousal and insomnia.
A psychiatric-mental health nurse practitioner is preparing to initiate treatment for a 7-year-old child newly diagnosed with ADHD. According to current evidence-based guidelines, which of the following statements BEST reflects first-line pharmacologic management and safety considerations?
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Non-stimulant medications are preferred as first-line therapy due to superior efficacy and safety
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CNS stimulants are first-line agents because they demonstrate the highest efficacy with generally mild, tolerable side effects
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Stimulants should be prescribed to all patients with ADHD regardless of cardiac history
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Pharmacologic treatment is not recommended until behavioral therapy has been attempted for at least 12 months
Explanation
Explanation:
Correct Answer: (B) CNS stimulants are first-line agents because they demonstrate the highest efficacy with generally mild, tolerable side effects
CNS stimulants (such as methylphenidate and amphetamine derivatives) have the strongest evidence base for efficacy in treating ADHD symptoms, with side effects that are generally mild and manageable, making them the recommended first-line pharmacologic treatment.
Why Other Options are Incorrect:
A. Non-stimulants are considered second-line agents, typically used when stimulants are ineffective, not tolerated, or contraindicated.
C. Cardiac history must be assessed before prescribing stimulants, as stimulants carry cardiovascular risks that require screening and caution in at-risk patients.
D. While behavioral therapy is an important first-line/adjunct treatment, particularly in young children, current guidelines do not require a strict 12-month behavioral trial before considering pharmacologic treatment, especially for moderate-to-severe cases.
A 12-year-old adolescent is brought to clinic after several episodes of sudden aggressive outbursts over the past year. During these episodes, the patient has destroyed household property and physically assaulted peers. The episodes begin abruptly, last less than an hour, and resolve spontaneously. The aggression is grossly disproportionate to any identifiable stressor. Between episodes, the patient's mood and behavior return to baseline. There is no history of schizophrenia, substance intoxication, conduct disorder, ADHD, or adjustment disorder. Which diagnosis BEST explains this presentation?
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Conduct disorder
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Intermittent explosive disorder
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Oppositional defiant disorder
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Disruptive mood dysregulation disorder
Explanation
Explanation:
Correct Answer: (B) Intermittent explosive disorder
This presentation—sudden, discrete episodes of aggressive outbursts grossly disproportionate to any provocation, with a return to baseline mood/behavior between episodes and no other explanatory diagnosis—is classic for intermittent explosive disorder.
Why Other Options are Incorrect:
A. Conduct disorder involves a persistent pattern of violating others' rights and societal norms (e.g., theft, cruelty, destruction of property as an ongoing pattern), which has been explicitly ruled out in this history.
C. Oppositional defiant disorder is characterized by a persistent pattern of angry/irritable mood, argumentative/defiant behavior, and vindictiveness, not discrete explosive aggressive episodes with return to baseline.
D. Disruptive mood dysregulation disorder involves persistent irritability between severe temper outbursts, whereas this patient returns fully to baseline mood between episodes.
A 10-year-old child with ADHD has not tolerated stimulant medications due to appetite suppression and insomnia. The psychiatric-mental health nurse practitioner considers initiating a nonstimulant medication. Which of the following statements BEST reflects evidence-based prescribing considerations for nonstimulant ADHD treatments?
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Atomoxetine is a norepinephrine reuptake inhibitor and carries a black-box warning for increased suicidal thoughts in children
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Atomoxetine is a dopamine agonist and does not require monitoring for mood changes
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Clonidine and guanfacine are contraindicated in ADHD due to risk of hypotension
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Nonstimulant medications are first-line agents because they have higher efficacy than stimulants
Explanation
Explanation:
Correct Answer: (A) Atomoxetine is a norepinephrine reuptake inhibitor and carries a black-box warning for increased suicidal thoughts in children
Atomoxetine works by selectively inhibiting norepinephrine reuptake and carries an FDA black-box warning regarding increased risk of suicidal ideation in children and adolescents, requiring close monitoring during treatment.
Why Other Options are Incorrect:
B. Atomoxetine is not a dopamine agonist; it is a selective norepinephrine reuptake inhibitor, and it does require monitoring for mood changes given its black-box warning.
C. Clonidine and guanfacine (alpha-2 agonists) are approved nonstimulant options for ADHD; while hypotension and sedation are potential side effects requiring monitoring, they are not contraindicated for this reason.
D. Nonstimulants are considered second-line agents, generally demonstrating lower efficacy compared to stimulants, which remain the first-line treatment.
A 32-year-old patient with a history of schizophrenia is brought to the emergency department due to sudden confusion, disorganized behavior, and fluctuating levels of alertness. The family reports that although the patient has had hallucinations and delusions in the past, they were typically well-formed and consistent. Which of the following findings would MOST help the clinician differentiate delirium from an exacerbation of schizophrenia?
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The presence of auditory hallucinations with organized delusional themes
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A stable level of consciousness and intact orientation
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Fluctuating attention and impaired level of consciousness
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Disorganized behavior occurring in the context of chronic psychotic illness
Explanation
Explanation:
Correct Answer: (C) Fluctuating attention and impaired level of consciousness
Fluctuating attention and impaired consciousness are hallmark features of delirium and are not typically seen in a primary psychiatric exacerbation like schizophrenia, where consciousness and attention generally remain intact even during acute psychotic episodes.
Why Other Options are Incorrect:
A. Organized, consistent hallucinations and delusions are more characteristic of this patient's baseline schizophrenia rather than delirium, which typically presents with disorganized, fluctuating perceptual disturbances.
B. A stable level of consciousness and intact orientation would suggest a schizophrenia exacerbation rather than delirium, which is defined by impaired consciousness.
D. Disorganized behavior alone, in the context of chronic psychotic illness, does not differentiate delirium since this could simply represent worsening of the patient's baseline schizophrenia.
A 26-year-old patient has experienced several manic episodes but denies ever having depressive symptoms. The clinician explains that this condition still falls within the bipolar spectrum. Which diagnosis best fits this presentation?
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Cyclothymia
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Dysthymia
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Unipolar mania
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Hypomania
Explanation
Explanation:
Correct Answer: (C) Unipolar mania
Unipolar mania describes a rare presentation within the bipolar spectrum where a patient experiences recurrent manic episodes without ever experiencing a depressive episode, distinguishing it from typical bipolar I disorder, which usually includes both mood poles.
Why Other Options are Incorrect:
A. Cyclothymia involves chronic, fluctuating periods of hypomanic and depressive symptoms that don't meet full criteria for mania or major depression, not full manic episodes without depression.
B. Dysthymia (persistent depressive disorder) is characterized by chronic low-grade depressive symptoms, which is inconsistent with this patient's history of manic episodes and no depression.
D. Hypomania refers to a milder, shorter form of elevated mood that does not cause significant impairment, whereas this patient has experienced full manic episodes.
A 32-year-old man with a history of heavy stimulant misuse presents with intense psychotic symptoms. He denies visual hallucinations but states he feels "on edge" and believes people are plotting against him. Which of the following findings is MOST characteristic of stimulant-induced psychotic disorder?
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Prominent visual hallucinations with minimal paranoid thinking
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Tactile hallucinations as the primary symptom in most cases
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Paranoid delusions occurring in fewer than 10% of stimulant users
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Paranoid delusions with possible auditory hallucinations, occurring in up to half of stimulant misusers
Explanation
Explanation:
Correct Answer: (D) Paranoid delusions with possible auditory hallucinations, occurring in up to half of stimulant misusers
Stimulant-induced psychosis commonly presents with paranoid delusions, often accompanied by auditory hallucinations, and this presentation occurs in a substantial proportion (up to approximately half) of individuals who misuse stimulants heavily.
Why Other Options are Incorrect:
A. Visual hallucinations are less prominent than paranoid delusions in stimulant-induced psychosis; paranoia is the hallmark feature, not minimal.
B. Tactile hallucinations (such as formication) can occur but are not the primary or most characteristic symptom; paranoid delusions are more central to this disorder.
C. Paranoid delusions occur far more frequently than in fewer than 10% of users; they are actually one of the most common features of stimulant-induced psychosis.
A psychiatric-mental health nurse practitioner is educating parents about the genetic factors associated with ADHD after their child receives a new diagnosis. Which of the following statements BEST reflects current evidence regarding the heritability of ADHD?
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ADHD shows minimal genetic influence, with similar concordance rates in monozygotic and dizygotic twins
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ADHD has a strong genetic component, with significantly higher concordance in monozygotic twins and a 2-8x increased risk in first-degree relatives
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ADHD is primarily caused by environmental factors, and family history is not a significant predictor
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ADHD risk is limited to siblings but does not extend to parents of affected children
Explanation
Explanation:
Correct Answer: (B) ADHD has a strong genetic component, with significantly higher concordance in monozygotic twins and a 2-8x increased risk in first-degree relatives
Twin and family studies consistently demonstrate that ADHD is highly heritable, with significantly higher concordance rates among monozygotic (identical) twins compared to dizygotic twins, and first-degree relatives of individuals with ADHD have a substantially increased risk of also being affected.
Why Other Options are Incorrect:
A. Monozygotic twins show notably higher concordance rates than dizygotic twins, reflecting a strong genetic influence, not minimal or similar rates.
C. While environmental factors can contribute, genetics play a major, well-documented role in ADHD, and family history is a significant predictor of risk.
D. Increased ADHD risk extends to both siblings and parents of affected children, reflecting the broader heritable pattern within families, not just siblings.
The psychiatric nurse practitioner is evaluating a patient with schizophrenia who has shown minimal improvement after starting an antipsychotic medication. Before determining that the patient is a nonresponder, which of the following actions is MOST appropriate?
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Immediately switch to clozapine due to lack of early improvement
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Confirm medication adherence and ensure an adequate therapeutic trial at a therapeutic dose
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Add a second antipsychotic to accelerate symptom response
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Discontinue the antipsychotic and begin mood stabilizer therapy and consult
Explanation
Explanation:
Correct Answer: (B) Confirm medication adherence and ensure an adequate therapeutic trial at a therapeutic dose
Before labeling a patient as a treatment nonresponder, the clinician must first confirm medication adherence and ensure the patient has received an adequate trial duration (typically 4-6 weeks) at a therapeutic dose, as inadequate dosing or nonadherence are common reasons for apparent treatment failure.
Why Other Options are Incorrect:
A. Clozapine is reserved for treatment-resistant schizophrenia after failure of at least two adequate antipsychotic trials, not immediately upon minimal improvement.
C. Antipsychotic polypharmacy is not recommended as an initial strategy and should be avoided until an adequate single-agent trial has been confirmed to have failed.
D. Discontinuing the antipsychotic for a mood stabilizer is not appropriate for schizophrenia, which is not primarily treated with mood stabilizers.
A 24-year-old man presents for evaluation of escalating methamphetamine use. He reports intense euphoria, increased energy, and difficulty stopping despite negative consequences. The clinician explains that the addictive potential of classic amphetamines is strongly linked to their neurobiological effects. Which of the following mechanisms BEST explains why amphetamines are highly reinforcing and addictive?
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They block serotonin reuptake in the raphe nuclei, producing long-lasting euphoria with brief bouts of depression
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They inhibit GABA release from interneurons in the prefrontal cortex, producing an energy burst with mood elevation and poor impulse control
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They cause the release of catecholamines, especially dopamine, from presynaptic terminals in the reward circuit
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They primarily enhance acetylcholine release in the basal forebrain, increasing alertness
Explanation
Explanation:
Correct Answer: (C) They cause the release of catecholamines, especially dopamine, from presynaptic terminals in the reward circuit
Amphetamines act primarily by triggering the release of catecholamines, particularly dopamine, from presynaptic terminals in the brain's mesolimbic reward pathway, producing intense euphoria that drives the high addictive potential of these substances.
Why Other Options are Incorrect:
A. This mechanism more closely describes serotonergic drugs, not the primary dopaminergic mechanism responsible for amphetamine's reinforcing effects.
B. GABA inhibition in the prefrontal cortex is not the primary mechanism underlying amphetamine's addictive, reinforcing properties.
D. While acetylcholine systems can be affected, the primary reinforcing mechanism of amphetamines is dopamine release in the reward circuit, not acetylcholine enhancement.
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