A patient presents with anxiety, increased heart rate, and fear. The nurse suspects the activation of which neurotransmitter?
Histamine
Acetylcholine
GABA
Norepinephrine
The Correct Answer is D
Choice A reason: Histamine regulates wakefulness and allergic responses, not anxiety or fear. Its receptors in the brain promote alertness, but excessive histamine does not drive sympathetic activation like increased heart rate. This makes histamine an incorrect choice for the symptoms described, which align with autonomic arousal.
Choice B reason: Acetylcholine mediates parasympathetic responses, like slowing heart rate, not the sympathetic activation seen in anxiety. While it plays a role in attention, it does not primarily cause fear or tachycardia, making it an unsuitable choice compared to norepinephrine’s role in stress responses.
Choice C reason: GABA inhibits neural activity, reducing anxiety via GABA-A receptor activation. Low GABA levels may contribute to anxiety, but the symptoms described (tachycardia, fear) result from sympathetic activation, not GABA excess. This makes GABA incorrect for the neurotransmitter driving these symptoms.
Choice D reason: Norepinephrine, released during stress, activates the sympathetic nervous system, increasing heart rate and inducing fear via locus coeruleus activation. It heightens arousal in the amygdala, contributing to anxiety symptoms. This aligns with the fight-or-flight response, making norepinephrine the correct neurotransmitter for these symptoms.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason: This question verifies the nurse’s interpretation, ensuring accurate understanding of concerns linked to emotional dysregulation, possibly from serotonin imbalances. It promotes therapeutic communication, engaging prefrontal cortex processing to clarify patient emotions, reducing miscommunication and fostering trust in psychiatric interactions.
Choice B reason: Asking for common elements seeks patterns, not clarification of specific concerns. Emotional concerns, tied to amygdala hyperactivity, require precise understanding. This question is too vague, risking misinterpretation of neurobiological emotional cues, making it less effective for therapeutic clarification in psychiatric care.
Choice C reason: Requesting a full recount is inefficient and may overwhelm patients with anxiety or cognitive deficits, like those from dopamine dysregulation. Clarification needs targeted questions to confirm specific concerns, not a broad restart, making this approach inappropriate for effective therapeutic communication.
Choice D reason: Asking to repeat experiences may frustrate patients and fail to clarify specific points. Emotional concerns, linked to stress-induced cortisol spikes, need focused verification. This vague request risks missing neurobiological nuances, making it less effective than direct confirmation for therapeutic clarification.
Correct Answer is A
Explanation
Choice A reason: Justice ensures fair treatment across patients. Different interventions (restraint vs. supervision) for self-mutilation, possibly due to serotonin dysregulation, must be equitably applied based on clinical need, not bias. Ensuring consistent, fair application of interventions aligns with justice, addressing ethical concerns about differential treatment in psychiatric care.
Choice B reason: Autonomy involves respecting patient choices, but self-mutilation, driven by impulsivity or emotional dysregulation, requires safety interventions overriding choice. Restraint and supervision prioritize safety over autonomy, making this principle less relevant than justice, which focuses on equitable treatment across patients in this scenario.
Choice C reason: Fidelity emphasizes keeping promises or loyalty to patients, not the fairness of intervention choices. While trust is crucial, the concern here is equitable treatment for self-mutilation, not commitment to promises. Fidelity is secondary to justice in addressing differential interventions, making it incorrect.
Choice D reason: Beneficence focuses on doing good, like preventing harm in self-mutilation. Both restraint and supervision aim to protect, but the ethical concern is fairness, not benefit. Justice addresses equitable application of interventions, making beneficence less directly applicable to the ethical dilemma described.
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