Correct Answer: A

Rationale: The correct answer is A: 'Monitor urine output and electrolyte levels.' In managing a patient with acute kidney injury (AKI), it is crucial for the nurse to monitor urine output and electrolyte levels to assess kidney function and the patient's fluid and electrolyte balance. This monitoring helps in early detection of any worsening kidney function or electrolyte imbalances. Choice B is incorrect because administering diuretics and restricting potassium may not be appropriate for all AKI patients and should be done under the direction of a healthcare provider. Choice C is also incorrect as providing dietary education and monitoring fluid intake are important but do not directly address the immediate management of AKI. Choice D is incorrect as administering antibiotics and checking for dehydration are not primary interventions for managing AKI; antibiotics are only given if there is an infection contributing to AKI, and dehydration should be managed but is not the primary role of the nurse in AKI management.

Correct Answer: B

Rationale: The correct intervention for a client with a chest tube connected to a closed drainage system is to maintain the drainage below the level of the chest. This position allows proper drainage of fluids and helps prevent complications such as backflow of blood or fluids into the chest cavity. Clamping the chest tube (Choice A) is incorrect as it can lead to a tension pneumothorax. Elevating the chest tube above chest level (Choice C) is also incorrect because it can impede proper drainage. Avoiding frequent dressing changes (Choice D) is important to prevent introducing infection, but it is not directly related to the position of the drainage system.

Correct Answer: C

Rationale: Cold extremities are a critical sign of impending death as they indicate decreased circulation, leading to poor perfusion to the extremities. This phenomenon occurs as the body redirects blood flow to vital organs, preparing for the end of life. Hypertension and tachycardia are less likely to be seen in the terminal phase and are usually associated with other conditions like shock or sepsis. Diaphoresis, or excessive sweating, may occur in various situations but is not a specific indicator of impending death in this context.

Correct Answer: A

Rationale: The correct intervention for a patient with hypokalemia is to administer potassium supplements and monitor the ECG. Potassium supplements help correct the low potassium levels in the body, while ECG monitoring is essential to detect any cardiac arrhythmias associated with hypokalemia. Choice B is incorrect because a high-sodium diet would worsen hypokalemia by further depleting potassium levels. Choice C is incorrect as it only focuses on monitoring symptoms and providing dietary education, but does not address the immediate need to correct potassium levels. Choice D is also incorrect as administering diuretics would exacerbate hypokalemia by increasing potassium loss.

Correct Answer: A

Rationale: The correct answer is A, paradoxical excitement. Lorazepam can cause an unexpected response of paradoxical excitement, which should be reported to the healthcare provider. This reaction is characterized by increased anxiety, restlessness, and agitation instead of the expected calming effect. Choices B, C, and D are incorrect because headache, slowing of reflexes, and fatigue are more common side effects of lorazepam and may not warrant immediate reporting unless severe or persistent.