Correct Answer: C

Rationale: In a client with chronic heart failure receiving furosemide, crackles in the lungs indicate pulmonary congestion, requiring immediate intervention. This finding suggests fluid accumulation in the lungs, impairing oxygen exchange and potentially leading to respiratory distress. Monitoring and managing pulmonary congestion promptly are crucial to prevent worsening heart failure and respiratory compromise. The other options, while important to assess in a client with heart failure, do not indicate an immediate need for intervention like crackles in the lungs do. A heart rate of 60 beats per minute may be within the normal range for some individuals, a blood pressure of 110/70 mmHg is relatively stable, and peripheral edema is a common manifestation of heart failure that should be monitored but does not require immediate intervention compared to pulmonary congestion.

Correct Answer: B

Rationale: In a client with left-sided heart failure, monitoring serum potassium levels is crucial. This helps in assessing kidney function and fluid balance. Elevated potassium levels can result from impaired kidney function, which is common in heart failure. Monitoring sodium levels (choice A) is important in heart failure but not specifically related to left-sided heart failure. Serum creatinine (choice C) reflects kidney function but is not the most critical value to monitor in this case. Serum glucose level (choice D) is important but not the priority when assessing left-sided heart failure.

Correct Answer: C

Rationale: Choice C is the best response because it directly addresses the client's expressed hopelessness and assesses the risk for self-harm. When a client with major depressive disorder expresses feeling worthless and unable to see improvement, it is essential to assess suicidal ideation to ensure their safety. Choices A, B, and D provide empathy and support, which are important but addressing suicidal ideation is the priority in this situation.

Correct Answer: A

Rationale: In this situation, the nurse should attempt to distract the client with general conversation. Distracting the client can help reduce anxiety and make the procedure less stressful. Administering pain medication (choice B) is not appropriate as the client's discomfort is related to anxiety, not physical pain. Continuing with the procedure while reassuring the client (choice C) may not address the client's anxiety effectively. Stopping the procedure and notifying the healthcare provider (choice D) is not necessary at this point since the client's anxiety can be managed by attempting to distract him.

Correct Answer: A

Rationale: Administering oxygen therapy as prescribed is the initial priority when managing an exacerbation of COPD. In COPD exacerbations, the primary concern is hypoxemia due to impaired gas exchange. Administering oxygen helps to improve oxygenation and prevent further complications. Elevating the head of the bed can aid in breathing comfort but is not the priority over ensuring adequate oxygen supply. Assessing the client's level of consciousness is important but comes after ensuring oxygenation. Obtaining a sputum culture is relevant for identifying pathogens but is not the immediate priority in addressing hypoxemia.