A nurse is caring for a client who has heart failure and respiratory arrest.
Which of the following actions should the nurse take first?

Choice A rationale

Pain assessment requires a therapeutic and empathetic approach, recognizing pain as a subjective experience that warrants further investigation regardless of the reported level or the patient's dismissiveness. Simply accepting the statement and concluding the interaction does not fulfill the nurse's role in advocating for the patient or performing a comprehensive pain assessment to identify potential underlying, treatable pathology.

Choice B rationale

Pain is often undertreated in older adults, and setting an arbitrary threshold for treatment ignores the patient's current distress and perception. A pain level of 3 of 10 still indicates mild pain that warrants investigation, as it may interfere with function or signal a serious, treatable condition. This response is dismissive and fails to initiate a proper diagnostic inquiry.

Choice C rationale

While this response acknowledges the patient's dismissiveness, it inappropriately validates the misconception that pain is an inevitable part of aging. Pain is not a normal physiological consequence of aging and should always be thoroughly assessed. Directly focusing on the cause is part of the assessment but should be preceded by a more therapeutic, non-judgmental acknowledgment.

Choice D rationale

This response demonstrates empathy by acknowledging the patient's enduring pain experience and advocacy by committing to further assessment. It counteracts the misconception that pain is normal with aging, opening the door for a complete diagnostic workup to identify a treatable cause. The response is therapeutic and initiates the necessary next steps in the nursing process.

Choice A rationale

Anaphylactic shock is a systemic, acute, hypersensitivity reaction mediated by mast cells and basophils releasing mediators, primarily histamine, not a bacterial infection. The immediate priority is reversing the life-threatening physiological effects, such as massive vasodilation and bronchoconstriction, not culturing or empirically treating for a bacterial process. Antibiotics are not the appropriate initial intervention.

Choice B rationale

Diphenhydramine is an H1 receptor antagonist (antihistamine) that blocks the effects of histamine released from mast cells and basophils during the anaphylactic response. Histamine causes vasodilation, increased capillary permeability, and smooth muscle contraction (e.g., bronchospasm). Blocking these receptors helps mitigate these detrimental vascular and respiratory effects, supporting blood pressure and ventilation.

Choice C rationale

Severe anaphylaxis causes life-threatening airway edema and bronchospasm due to mediator release, leading to respiratory failure. Laryngeal edema can rapidly obstruct the airway. Preparing for surgical management, such as a cricothyroidotomy or tracheostomy, is critical if conventional methods (e.g., epinephrine, intubation) fail to establish a patent, functional airway, ensuring oxygenation.

Choice D rationale

Theophylline (a methylxanthine) and its derivative aminophylline are bronchodilators that relax smooth muscles in the airways. They inhibit phosphodiesterase, increasing intracellular cyclic adenosine monophosphate (cAMP), which promotes bronchodilation. This action directly counteracts the bronchospasm component of anaphylaxis, improving airflow and oxygen delivery, which is vital in this emergency.

Choice E rationale

The patient in anaphylactic shock requires immediate, aggressive intervention, including epinephrine (primary treatment), airway management, and volume resuscitation, as they are at risk for hypoxia and circulatory collapse. Offering sips of water is a low-priority intervention that could delay life-saving treatment and carries a risk of aspiration due to potential laryngeal edema or altered mental status.