Correct Answer: D

Rationale: Enteral feedings are commonly used in patients with Crohn's disease during acute exacerbations to provide adequate nutrition while resting the bowel. Acute cholecystitis, hepatic encephalopathy, and ulcerative colitis in remission wouldn't typically require enteral feedings as the primary nutritional support. Acute cholecystitis may necessitate fasting and intravenous fluids, hepatic encephalopathy may require dietary modifications but not enteral feedings, and patients with ulcerative colitis in remission usually have their nutritional needs met through a regular diet.

Correct Answer: A

Rationale: The correct answer is A. This client situation presents with concerning clinical signs such as no urine output post kidney transplant, elevated temperature, tachycardia, hypotension, and restlessness, suggestive of acute renal failure and sepsis. These signs necessitate immediate intervention by the rapid response team (RRT) to address the potentially life-threatening conditions. Choice B is incorrect as the client is stable after chest tube removal and primarily anxious about going home. Choice C is incorrect as the client's symptoms are related to postoperative recovery and boredom, not indicating an urgent need for RRT consultation. Choice D is incorrect as the client post hip repair is stable, alert, and interacting normally, without signs of acute deterioration requiring RRT involvement.

Correct Answer: A

Rationale: Patients with chronic renal failure should avoid potassium due to impaired kidney function. The kidneys play a crucial role in regulating potassium levels in the body. In renal failure, the kidneys may not be able to excrete excess potassium effectively, leading to hyperkalemia. Calcium, iron, and zinc are not typically restricted in chronic renal failure unless there are specific individual circumstances, making them incorrect choices.

Correct Answer: A

Rationale: Patients with chronic renal failure should avoid potassium due to impaired kidney function. The kidneys may not effectively filter excess potassium from the blood, leading to hyperkalemia. Calcium, iron, and zinc do not need to be avoided specifically in chronic renal failure unless there are other underlying reasons or complications.

Correct Answer: B

Rationale: The correct answer is B: High blood cholesterol, high blood pressure, and cigarette smoking are three major causes of atherosclerosis. Atherosclerosis is mainly attributed to the buildup of cholesterol-rich plaques in the arteries, high blood pressure causing damage to the arterial walls, and the harmful effects of cigarette smoking on blood vessels. Choices A, C, and D are incorrect because they do not directly relate to the primary causes of atherosclerosis.