A client is experiencing a panic attack. What medication will provide the quickest relief from acute severe anxiety symptoms?

Choice A reason: Histamine blockade, as in antipsychotics like olanzapine, promotes sedation, not weight loss. Weight gain is common due to histamine’s role in appetite regulation via hypothalamic signaling. Weight loss is not a typical side effect, making this response inaccurate for histamine-blocking medications.

Choice B reason: Histamine receptor blockade, common in medications like quetiapine, reduces wakefulness by inhibiting histamine’s alerting effects in the cortex. This causes drowsiness, a frequent side effect in psychiatric treatments, aligning with the pharmacological mechanism and making this the correct response.

Choice C reason: Insomnia is not typical with histamine blockade, which promotes sedation. Histamine enhances alertness; blocking it, as in antihistaminic antipsychotics, induces sleepiness, not wakefulness. This response contradicts the neuropharmacological effect, making it incorrect for expected side effects.

Choice D reason: Blood pressure increase is unrelated to histamine blockade. Histamine affects wakefulness and appetite, not vascular tone directly. Antihistaminic drugs may cause orthostatic hypotension via other receptors, not hypertension, making this response inaccurate for histamine-blocking medication effects.

Choice A reason: Projection involves attributing one’s issues to others, not ignoring symptoms. The patient’s dismissal of serious symptoms, like weight loss, suggests denial, not projection. These symptoms may indicate physiological issues, not psychological attribution, making projection incorrect for this defense mechanism.

Choice B reason: Regression involves reverting to childish behaviors, not ignoring symptoms. The patient’s claim of a minor cold despite weight loss and fatigue reflects denial, not regression. These symptoms suggest a serious condition, not immature coping, making this an incorrect defense mechanism.

Choice C reason: Denial involves refusing to acknowledge serious symptoms, like weight loss and fatigue, which may indicate a medical condition. By attributing them to a minor cold, the patient avoids reality, a common defense in stress-related cortisol spikes, making this the correct mechanism.

Choice D reason: Displacement redirects emotions to another target, not ignoring symptoms. The patient’s minimization of serious health issues, like fatigue, reflects denial, not redirected feelings. This mechanism is unrelated to dismissing physical symptoms, making it incorrect for the described behavior.