MSN 671 : Psychopathopharmacology I - NKU Module 4 quiz 6
Access The Exact Questions for MSN 671 : Psychopathopharmacology I - NKU Module 4 quiz 6
💯 100% Pass Rate guaranteed
🗓️ Unlock for 1 Month
Rated 4.8/5 from over 1000+ reviews
- Unlimited Exact Practice Test Questions
- Trusted By 200 Million Students and Professors
What’s Included:
- Unlock Actual Exam Questions and Answers for MSN 671 : Psychopathopharmacology I - NKU Module 4 quiz 6 on monthly basis
- Well-structured questions covering all topics, accompanied by organized images.
- Learn from mistakes with detailed answer explanations.
- Easy To understand explanations for all students.
Free MSN 671 : Psychopathopharmacology I - NKU Module 4 quiz 6 Questions
What is considered the first-line treatment for chronic insomnia, offering effectiveness comparable to medications but with longer-lasting benefits and no risk of dependence?
-
Cognitive Behavioral Therapy for Insomnia (CBT-I)
-
Benzodiazepines
-
Antihistamines (e.g., diphenhydramine)
-
Melatonin supplements
Explanation
Correct Answer:
A. Cognitive Behavioral Therapy for Insomnia (CBT-I)
Explanation of Correct Answer
CBT-I is the gold-standard, first-line treatment for chronic insomnia. It targets maladaptive sleep behaviors and thoughts, using strategies such as stimulus control, sleep restriction, cognitive restructuring, and relaxation training. Evidence shows CBT-I is as effective as medications in the short-term but with longer-lasting results and without risks like dependence, tolerance, or next-day sedation. This makes it the safest and most sustainable intervention.
Which statement best explains the role of NMDA receptor antagonists, such as memantine, in the treatment of Alzheimer’s disease?
-
They work on the cholinergic system to increase acetylcholine levels in early stages of the disease
-
They block dopamine reuptake to improve motivation and cognition
-
They act on the glutamatergic system to reduce excitotoxicity, which becomes more prominent in later stages of the disease
-
They enhance serotonin signaling to reduce depression and anxiety symptoms in dementia
Explanation
Correct Answer:
C. They act on the glutamatergic system to reduce excitotoxicity, which becomes more prominent in later stages of the disease
Explanation of Correct Answer
NMDA receptor antagonists, such as memantine, work by regulating the glutamatergic system. In Alzheimer’s disease, excessive glutamate activity leads to overactivation of NMDA receptors, causing calcium influx and neuronal damage (excitotoxicity). By blocking this excessive stimulation while preserving normal synaptic transmission, memantine helps protect neurons. This mechanism is especially useful in moderate to severe stages of Alzheimer’s disease, where excitotoxicity plays a greater role in disease progression.
............................................................. is one of the key neurotransmitters that regulates wakefulness and is the ultimate target of many wake-promoting drugs when enhanced and sleep-promoting drugs when blocked.
-
Prolactin
-
Histamine
-
Acetylcholine
-
Dopamine
Explanation
Correct Answer:
B. Histamine
Explanation of Correct Answer
Histamine, released from neurons in the tuberomammillary nucleus of the hypothalamus, plays a central role in promoting wakefulness. When histamine activity is enhanced, it stimulates arousal, which is why histamine agonists or stimulants support wakefulness. Conversely, blocking histamine receptors (as with many antihistamines) promotes drowsiness and sleep, making histamine the ultimate neurotransmitter target for both sleep- and wake-promoting drugs.
Which of the following are recognized clinical impacts of chronic insomnia?
-
Improved memory, reduced stress, and increased productivity
-
Suicidality, cognitive decline, and increased risk of depression
-
Enhanced attention, greater emotional stability, and improved mood
-
Stronger immunity, higher energy, and better cardiovascular health
Explanation
Correct Answer:
B. Suicidality, cognitive decline, and increased risk of depression
Explanation of Correct Answer
Chronic insomnia has serious clinical impacts beyond poor sleep quality. It significantly increases the risk of suicidality, due to worsened mood regulation and hopelessness. It contributes to cognitive decline, impairing memory, attention, and decision-making. Insomnia is also a major risk factor for depression, both triggering new episodes and worsening existing depression. These outcomes highlight the need to diagnose and treat insomnia early to prevent severe mental health consequences.
Histamine _____ receptors are best known for their role in gastric acid secretion and as the target of anti-ulcer drugs. Postsynaptically, they activate a G-protein second messenger system involving cyclic adenosine monophosphate (cAMP), protein kinase A (PKA), and the gene product CREB.
-
H1
-
H2
-
H3
-
H4
Explanation
Correct Answer:
B. H2
Explanation of Correct Answer
Histamine H2 receptors are located in the stomach lining, where they regulate gastric acid secretion, making them the target of anti-ulcer drugs such as ranitidine and famotidine. Beyond the gut, H2 receptors are postsynaptic receptors that couple to G-proteins and signal through cAMP, PKA, and CREB. This cascade influences gene expression and neuronal activity, linking histamine signaling to functions beyond the gastrointestinal system.
Memantine (Namenda) is used in the treatment of Alzheimer’s disease. Which description best matches its mechanism and clinical role?
-
Reversible acetylcholinesterase inhibitor that boosts acetylcholine in early stages of Alzheimer’s
-
Pseudo-irreversible cholinesterase inhibitor that blocks both AChE and BuChE for advanced stages
-
NMDA receptor antagonist that blocks excessive glutamate activity to reduce excitotoxicity in moderate to severe Alzheimer’s
-
Dopamine agonist that restores mesolimbic function and improves hallucinations
Explanation
Correct Answer:
C. NMDA receptor antagonist that blocks excessive glutamate activity to reduce excitotoxicity in moderate to severe Alzheimer’s
Explanation of Correct Answer
Memantine (Namenda) is an NMDA receptor antagonist that binds only when the receptor channel is open, selectively blocking excessive glutamate stimulation. This prevents pathological calcium influx that leads to excitotoxicity and neuronal damage. It does not interfere with normal synaptic activity. Clinically, memantine is used in moderate to severe stages of Alzheimer’s disease, often in combination with cholinesterase inhibitors, to preserve function and slow cognitive decline.
Lewy Body Dementia is characterized by fluctuating cognition, recurrent visual hallucinations, and what additional core feature?
-
Language impairment
-
Parkinsonism (motor symptoms)
-
REM rebound insomnia
-
Early severe memory loss
Explanation
Correct Answer:
B. Parkinsonism (motor symptoms)
Explanation of Correct Answer
Lewy Body Dementia (LBD) is defined by three core clinical features: fluctuating cognition, well-formed visual hallucinations, and parkinsonism (motor symptoms such as rigidity, bradykinesia, and tremor). For a diagnosis of LBD, parkinsonism must occur at the same time or after dementia onset. This timing distinguishes it from Parkinson’s disease dementia, where motor symptoms precede cognitive decline by at least a year.
The PMHNP has a 71-year-old female that is accompanied to the mental health clinic by their daughter. The patient has a chronic documented history of constipation and memory problems. The patient complains of difficulty with sleep. Which medication would you avoid administering this patient for sleep?
-
Diphenhydramine
-
Melatonin
-
Lemborexant
-
Doxepin
Explanation
Correct Answer:
A. Diphenhydramine
Explanation of Correct Answer
A. Diphenhydramine
Diphenhydramine is an antihistamine with strong anticholinergic side effects, including worsening constipation, urinary retention, and cognitive impairment. In older adults, it can significantly worsen memory problems and increase fall risk. Because of its anticholinergic burden, diphenhydramine is listed on the Beers Criteria as inappropriate for elderly patients.
Melatonin, lemborexant, and low-dose doxepin are safer alternatives for treating insomnia in geriatric populations, with careful monitoring.
The longer an individual is awake, the greater the homeostatic drive to sleep. The homeostatic sleep drive is dependent upon the accumulation of what chemical in the brain? The PMHNP understands this chemical increases as the person tires with fatigue throughout the day, and ultimately leads to the disinhibition of the ventrolateral preoptic (VLPO) nucleus and the release of GABA in the sleep circuit.
-
Tyrosine
-
Epinephrine
-
Adenosine
-
Norepinephrine
Explanation
Correct Answer:
C. Adenosine
Explanation of Correct Answer
Adenosine steadily accumulates in the brain during wakefulness as a byproduct of cellular energy metabolism. As adenosine builds up, it creates “sleep pressure,” signaling the need for rest. High adenosine levels inhibit arousal systems and activate the VLPO nucleus, which promotes GABA release and sleep initiation. This mechanism is central to the homeostatic regulation of sleep.
A patient is stuck in a state of hyperarousal that prevents sleep. Which type of medications are typically used to enhance inhibitory neurotransmission and reduce this hyperarousal?
-
GABA-enhancing medications (e.g., benzodiazepines, “Z-drugs”)
-
Orexin receptor agonists
-
Dopamine agonists
-
Histamine H2 receptor blockers
Explanation
Correct Answer:
A. GABA-enhancing medications (e.g., benzodiazepines, “Z-drugs”)
Explanation of Correct Answer
When patients experience insomnia due to hyperarousal, the most effective class of medications are those that enhance GABAergic neurotransmission, the brain’s primary inhibitory system. Benzodiazepines (e.g., temazepam) and non-benzodiazepine hypnotics (“Z-drugs” such as zolpidem and eszopiclone) increase the effect of GABA at GABA-A receptors. This reduces central nervous system excitability, decreases hyperarousal, and facilitates sleep onset
How to Order
Select Your Exam
Click on your desired exam to open its dedicated page with resources like practice questions, flashcards, and study guides.Choose what to focus on, Your selected exam is saved for quick access Once you log in.
Subscribe
Hit the Subscribe button on the platform. With your subscription, you will enjoy unlimited access to all practice questions and resources for a full 1-month period. After the month has elapsed, you can choose to resubscribe to continue benefiting from our comprehensive exam preparation tools and resources.
Pay and unlock the practice Questions
Once your payment is processed, you’ll immediately unlock access to all practice questions tailored to your selected exam for 1 month .