Correct Answer: C

Rationale: When the partner can independently perform the suctioning procedure, it demonstrates a readiness for the client's discharge. This indicates that the partner has acquired the necessary skills and knowledge to provide safe care for the client at home without the direct supervision of healthcare professionals.

Correct Answer: D

Rationale: When a client's heart rate increases and becomes irregular during suctioning of an endotracheal tube, it indicates potential hypoxemia. Performing pre-oxygenation before suctioning helps prevent hypoxemia and subsequent dysrhythmias. This intervention ensures that the client has adequate oxygen reserves before the procedure, reducing the risk of complications related to suctioning.

Correct Answer: B

Rationale: In myasthenia gravis, a neuromuscular disorder characterized by muscle weakness and fatigue, weakness is a common manifestation due to the immune system attacking the communication between nerves and muscles. Monitoring for weakness is crucial to assess the disease progression and determine the effectiveness of treatment. Confusion is not a typical manifestation of myasthenia gravis. Increased intracranial pressure and increased urinary output are not directly associated with this condition.

Correct Answer: A

Rationale: Arterial blood gases are crucial to assess postoperatively in a client who has undergone thoracotomy and lobectomy to monitor oxygenation and ventilation status. Changes in arterial blood gases can indicate respiratory complications or inadequate gas exchange, which are critical issues that need prompt intervention to prevent further complications. While urinary output, chest tube drainage, and pain level are important assessments, monitoring arterial blood gases takes precedence in this specific postoperative scenario to ensure optimal respiratory function and overall patient well-being.

Correct Answer: D

Rationale: Gastroenteritis can lead to fluid loss through vomiting and diarrhea, especially when accompanied by fever. Fever can increase insensible water loss through sweating as well. Both vomiting and diarrhea can significantly contribute to fluid volume deficit, making the client with gastroenteritis and fever at higher risk compared to the other clients described in the options.