MSN 671 : Psychopathopharmacology I - NKU Module 4 quiz 6
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Free MSN 671 : Psychopathopharmacology I - NKU Module 4 quiz 6 Questions
Which of the following are recognized clinical impacts of chronic insomnia?
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Improved memory, reduced stress, and increased productivity
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Suicidality, cognitive decline, and increased risk of depression
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Enhanced attention, greater emotional stability, and improved mood
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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.
Lewy Body Dementia patients are highly sensitive to traditional antipsychotics. If antipsychotic treatment is necessary, what type of medications are recommended?
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First-generation antipsychotics (e.g., haloperidol)
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High-potency dopamine antagonists (e.g., risperidone)
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Atypical antipsychotics with lower D2 blockade (e.g., quetiapine, brexpiprazole)
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Stimulant medications (e.g., methylphenidate)
Explanation
Correct Answer:
C. Atypical antipsychotics with lower D2 blockade (e.g., quetiapine, brexpiprazole)
Explanation of Correct Answer
Lewy Body Dementia patients often develop severe neuroleptic sensitivity reactions when exposed to first-generation or high-potency antipsychotics. This can worsen parkinsonism, cause profound rigidity, or even trigger neuroleptic malignant syndrome. If antipsychotics are required for hallucinations or behavioral symptoms, atypical agents with weaker dopamine D2 receptor blockade, such as quetiapine or brexpiprazole, are preferred. These options balance symptom control with lower risk of worsening motor function.
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?
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GABA-enhancing medications (e.g., benzodiazepines, “Z-drugs”)
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Orexin receptor agonists
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Dopamine agonists
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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
Short-acting GABA agonists are effective for helping a person fall asleep, but they will not what?
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Prevent awakenings during the night
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Reduce sleep onset latency
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Activate the ventrolateral preoptic nucleus (VLPO)
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Promote GABA release in the sleep circuit
Explanation
Correct Answer:
A. Prevent awakenings during the night
Explanation of Correct Answer
Short-acting GABA agonists, such as some non-benzodiazepine hypnotics, are designed to help with sleep initiation by enhancing inhibitory GABA activity. However, because of their short half-life, they do not maintain sleep throughout the night. This makes them ineffective at preventing frequent awakenings or early-morning waking.
In Alzheimer’s disease, the accumulation of beta-amyloid plaques and neurofibrillary tangles leads to the loss of which neurotransmitter that is critical for memory and cognition?
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Dopamine
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Serotonin
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Acetylcholine
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Histamine
Explanation
Correct Answer:
C. Acetylcholine
Explanation of Correct Answer
Alzheimer’s disease is characterized by the buildup of beta-amyloid plaques and tau neurofibrillary tangles, which damage neurons in the basal forebrain, particularly the nucleus basalis of Meynert. This leads to a profound loss of acetylcholine, the neurotransmitter essential for memory, attention, and higher-order cognition. The cholinergic hypothesis of Alzheimer’s explains why cholinesterase inhibitors (donepezil, rivastigmine, galantamine) are used to increase acetylcholine levels and temporarily improve symptoms.
Hypervigilance-related insomnia is most commonly seen in which of the following conditions?
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Anxiety, PTSD, and stimulant overuse
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Depression, dementia, and circadian rhythm disorder
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Narcolepsy, epilepsy, and restless legs syndrome
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Chronic pain, diabetes, and cardiovascular disease
Explanation
Correct Answer:
A. Anxiety, PTSD, and stimulant overuse
Explanation of Correct Answer
Hypervigilance insomnia occurs when the brain remains in a heightened state of arousal, preventing normal sleep initiation and maintenance. This is commonly seen in anxiety disorders, where worry prevents relaxation, PTSD, where trauma-related hyperarousal and nightmares disturb sleep, and stimulant overuse (e.g., caffeine, amphetamines), which directly activate wake-promoting systems. These conditions disrupt the brain’s ability to “switch off,” leading to persistent insomnia.
The PMHNP understands when orexin/hypocretin neurons degenerate in the hypothalamus a condition called ...................... may develop, which is characterized by the inability to stabilize wakefulness and thus sleep attacks in the daytime.
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Catalepsy
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Logolepsy
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Epilepsy
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Narcolepsy
Explanation
Correct Answer:
D. Narcolepsy
Explanation of Correct Answer
Narcolepsy is caused by the loss or dysfunction of orexin (also called hypocretin) neurons in the hypothalamus. These neurons normally stabilize the sleep–wake cycle by promoting wakefulness. Without them, the brain cannot maintain steady wakefulness, leading to excessive daytime sleepiness, sudden sleep attacks, and, in some cases, cataplexy. This makes narcolepsy the classic disorder linked to orexin/hypocretin deficiency.
Which of the following symptom clusters is most characteristic of sleep apnea?
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Difficulty falling asleep, sleepwalking, vivid dreams, and restless legs
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Loud snoring, frequent nocturnal awakenings, excessive daytime sleepiness, morning headaches, memory and cognitive problems, irritability
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Early morning awakenings, depressed mood, poor appetite, and low energy
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Nightmares, hypervigilance, flashbacks, and exaggerated startle response
Explanation
Correct Answer:
B. Loud snoring, frequent nocturnal awakenings, excessive daytime sleepiness, morning headaches, memory and cognitive problems, irritability
Explanation of Correct Answer
Sleep apnea is a sleep-related breathing disorder marked by repeated airway obstruction during sleep. Its hallmark features include loud snoring, frequent awakenings at night, and excessive daytime sleepiness due to fragmented sleep. Additional symptoms include morning headaches, memory/cognitive impairment, and irritability from chronic sleep disruption and intermittent hypoxia. Recognizing these symptoms is essential for screening and referral for sleep studies.
Which of the following is thought to be a hallmark of the underlying causes of Alzheimer's disease, negatively impacting the effectiveness of cholinergic projection and potentially resulting in a "steady leak" of glutamate?
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Amyloid Deposits and Neurofibrillary tangles
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Iodine and Cystine Deposits
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Tacrine Deposits and Neurocyanosis
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Amylase Deposits and Neurofibrillary tangles
Explanation
Correct Answer:
A. Amyloid Deposits and Neurofibrillary tangles
Explanation of Correct Answer
Amyloid-beta plaques and neurofibrillary tangles are the hallmark pathological features of Alzheimer’s disease. These abnormal protein accumulations impair cholinergic transmission and lead to excitotoxicity, including the “steady leak” of glutamate. Together, they cause progressive neuronal dysfunction and cognitive decline, forming the biological basis for the disease.
Which of the following best represents the key categories of causes of insomnia?
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Poor diet, lack of exercise, and screen time
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Psychiatric disorders, medical conditions, and substance use
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Aging, genetics, and seasonal changes
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Stress, overwork, and family responsibilities
Explanation
Correct Answer:
B. Psychiatric disorders, medical conditions, and substance use
Explanation of Correct Answer
Insomnia is often secondary to other conditions. The three key categories are:
Psychiatric disorders such as depression, anxiety, and PTSD, which alter sleep patterns.
Medical conditions like chronic pain, cardiovascular or pulmonary disease, and neurological disorders, which interfere with sleep.
Substance use, including caffeine, alcohol, and stimulants, which can disrupt sleep onset and maintenance.
These underlying causes must be assessed and addressed for effective treatment of insomnia.
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