The nurse administers a medication that potentiates the action of gamma-aminobutyric acid (GABA). Which effect would be expected?
Improved memory
Fewer visual hallucinations
Reduced anxiety
Increased alertness
The Correct Answer is C
Choice A reason: GABA, an inhibitory neurotransmitter, reduces neuronal activity, not enhances cognitive functions like memory. Memory improvement is associated with cholinergic or glutamatergic systems, not GABA, making this choice incorrect for the expected effect of GABA potentiation.
Choice B reason: Fewer visual hallucinations are associated with antipsychotics affecting dopamine, not GABA. GABA’s inhibitory effects calm the brain but do not directly target psychotic symptoms like hallucinations, making this choice incorrect for the medication’s effect.
Choice C reason: GABA potentiation, as with benzodiazepines, enhances inhibitory effects, reducing neuronal excitability and calming the central nervous system. This directly alleviates anxiety, a primary therapeutic effect, aligning with GABA’s role in anxiety disorders, making this the correct choice.
Choice D reason: Increased alertness is contrary to GABA’s inhibitory effects, which promote sedation. Stimulants, not GABAergic drugs, enhance alertness, making this choice incorrect, as GABA potentiation leads to calming, not stimulating, effects on the brain.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason: Zolpidem, a nonbenzodiazepine sedative, affects the central nervous system, causing sedation and impaired coordination, particularly in the elderly. Age-related declines in metabolism and balance increase fall risk, a critical nursing consideration. Monitoring mobility and ensuring safety measures are essential to prevent injuries, making this the correct choice.
Choice B reason: While zolpidem may cause daytime drowsiness, this is not the primary nursing consideration compared to fall risk in the elderly. Drowsiness is a general side effect, but the elderly’s heightened vulnerability to falls due to sedation and impaired coordination takes precedence, making this choice less critical.
Choice C reason: Zolpidem has a lower dependence risk than benzodiazepines, and dependence is not inevitable. This assumption overstates the risk and is not the primary nursing consideration. Fall prevention, especially in vulnerable populations like the elderly, is more urgent due to immediate safety concerns, making this choice incorrect.
Choice D reason: Zolpidem induces sedation rapidly, typically within 15–30 minutes, not requiring 4 weeks. This choice is factually incorrect, as prolonged use is not necessary for efficacy. The primary concern is immediate side effects like falls, not a delayed onset, making this an invalid nursing consideration.
Correct Answer is D
Explanation
Choice A reason: Mood stabilizers, like lithium, are used for bipolar disorder to regulate mood swings, not for acute anxiety. They target long-term mood stabilization, not immediate symptom relief, which is critical for post-traumatic anxiety, making this category inappropriate for the patient’s condition.
Choice B reason: Antidepressants, such as SSRIs, treat depression and chronic anxiety over weeks, not acute anxiety. Their delayed onset makes them unsuitable for immediate relief following a traumatic event like a car accident, where rapid symptom management is needed, making this choice incorrect.
Choice C reason: Antipsychotics treat psychosis or severe agitation, not primary anxiety. Their use in anxiety is off-label and typically reserved for cases unresponsive to anxiolytics, with higher side effect risks. This makes them inappropriate for acute anxiety management, rendering this choice incorrect.
Choice D reason: Anxiolytics, like benzodiazepines, provide rapid relief for acute anxiety by enhancing GABA activity, calming the central nervous system. They are the primary choice for short-term management of anxiety post-trauma, aligning with clinical guidelines, making this the correct medication category for patient teaching.
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