Correct Answer: A

Rationale: The correct initial response for the nurse to provide in this situation is to offer reassurance. Stating that 'Pheochromocytomas usually aren't cancerous (malignant)' helps to alleviate the client's anxiety and fear of having cancer. This response also establishes a foundation for further discussion about the condition, allowing the nurse to address the client's concerns and provide accurate information. Choice B is incorrect as it focuses solely on the diagnostic tests for pheochromocytoma but does not address the client's emotional distress. Choice C is incorrect as it discusses imaging modalities without directly addressing the client's concerns. Choice D is also incorrect as it assumes symptoms without first addressing the client's emotional state and fear of cancer.

Correct Answer: D

Rationale: A decrease in chest wall expansion suggests that the client may be experiencing a serious complication, such as worsening pneumonia or respiratory failure, requiring immediate medical attention. This finding indicates a potential decrease in lung function, which could lead to respiratory distress. Pleuritic pain on inspiration may be related to the disease process but does not indicate an immediate need for intervention. Dry mucus membranes in the mouth may require attention but are not as critical as a decrease in chest wall expansion. A decrease in respiratory rate could be concerning but is not as urgent as a decrease in chest wall expansion, which directly impacts respiratory function.

Correct Answer: A

Rationale: The main focus of secondary prevention is early detection and treatment of disease. This approach aims to identify health conditions in their early stages when they are easier to treat or manage effectively. Choice B, rehabilitation, is more aligned with restoring function after an illness or injury has occurred. Choice C, health promotion, concentrates on educating and empowering individuals to adopt healthy behaviors to prevent the onset of diseases. Choice D, palliative care, is focused on providing comfort and improving the quality of life for individuals with serious illnesses or at the end of life, rather than on early detection and treatment.

Correct Answer: D

Rationale: The correct answer is D: upstream intervention. Upstream thinking addresses the root causes of health problems to create long-term solutions. In this scenario, requiring the incinerator to install particulate filters tackles the root cause of asthma triggers, which is pollution, rather than just managing the symptoms or risks associated with asthma. Choice A, downstream intervention, would focus more on treating asthma symptoms after they have already occurred rather than preventing them. Choice B, risk management, typically involves strategies to assess, control, or mitigate risks, which may not directly address the root cause. Choice C, primary prevention, usually refers to actions taken to prevent a disease or condition before it occurs, but in this case, the action is targeting the underlying cause rather than preventing asthma itself.

Correct Answer: C

Rationale: The correct answer is C: Bradycardia. Digoxin toxicity often presents with bradycardia, which is a common sign of toxicity associated with this medication. Tachycardia (Choice A) is not typically seen with digoxin toxicity. Hypotension (Choice B) can occur but is less specific to digoxin toxicity. Hyperglycemia (Choice D) is not a typical sign of digoxin toxicity. Therefore, monitoring for bradycardia is crucial in clients receiving digoxin to detect toxicity early.