Correct Answer: A

Rationale: The correct answer is A: 'Monitor the client's hemoglobin and hematocrit.' When a client with chronic kidney disease is prescribed erythropoietin, the nurse's priority action is to monitor the client's hemoglobin and hematocrit. Erythropoietin stimulates red blood cell production, so monitoring these lab values helps evaluate the effectiveness of erythropoietin in treating anemia. Monitoring the client's blood pressure (choice B) is important but not the priority in this scenario. Assessing the client for signs of infection (choice C) is important but not the priority related to the prescription of erythropoietin. Monitoring the client for signs of bleeding (choice D) is relevant but not the priority action when erythropoietin is prescribed.

Correct Answer: B

Rationale: Numb fingertips may suggest neuropathy, a common complication of diabetes that may indicate a worsening condition. Episodes of weakness and palpitations, combined with neuropathy symptoms, could also suggest hypoglycemia or poor glycemic control, requiring further investigation. The other choices are less likely to be directly related to the client's current symptoms. While a history of hypertension is a common comorbidity in clients with diabetes, it may not directly explain the reported weakness and palpitations. Reduced deep tendon reflexes are more indicative of certain neurological conditions rather than acute emerging situations related to the client's current symptoms. An elevated fasting blood glucose level is expected in a client with type 2 diabetes and may not be the primary indicator of an emerging situation in this context.

Correct Answer: B

Rationale: Corrected Rationale: Prolonged exposure to high oxygen concentrations can disrupt the production of surfactant in the lungs, leading to atelectasis and other lung complications. Surfactant is essential for maintaining lung compliance and preventing alveolar collapse. Reduced cardiac output (Choice A) is not directly associated with prolonged oxygen exposure. Hyperactivity of alveoli (Choice C) is not a recognized consequence of high oxygen levels. Increased oxygen carrying capacity (Choice D) is not a pathophysiological effect of prolonged high oxygen exposure.

Correct Answer: A

Rationale: In a post-tonsillectomy and adenoidectomy patient, frequent swallowing is a crucial assessment that requires immediate attention by the nurse. Frequent swallowing can indicate bleeding, a complication that needs urgent intervention. Coughing may be expected due to irritation from the surgery but is not as concerning as potential bleeding. Slow breathing and tachycardia are not typically immediate concerns following this type of surgery.

Correct Answer: B

Rationale: A weak pulse and numbness distal to a radial artery catheter may indicate occlusion or damage to the artery, and immediate removal of the catheter is necessary to prevent complications. Therefore, promptly removing the catheter from the radial artery (Choice B) is the correct action. Monitoring the site (Choice A) would delay necessary intervention, elevating the client's arm (Choice C) may not address the underlying issue, and notifying the healthcare provider for surgery (Choice D) without removing the catheter promptly could lead to further complications.