ATI RN
ATI Fluid and Electrolytes
1. What is the most important regulator of the amount of sodium in the body?
- A. Kidneys
 - B. Small intestine
 - C. Large intestine
 - D. Skin
 
Correct answer: A
Rationale: The correct answer is A: Kidneys. The kidneys play a crucial role in regulating the amount of sodium in the body. They achieve this by filtering blood and controlling the excretion or reabsorption of sodium. The small intestine is primarily responsible for nutrient absorption, not sodium regulation. The large intestine is mainly involved in water absorption and waste elimination, not sodium balance. The skin helps regulate body temperature through sweating and does not directly regulate sodium levels.
2. You are the nurse evaluating a newly admitted patients laboratory results, which include several values that are outside of reference ranges. Which of the following would cause the release of antidiuretic hormone (ADH)?
- A. Increased serum sodium
 - B. Decreased serum potassium
 - C. Decreased hemoglobin
 - D. Increased platelets
 
Correct answer: A
Rationale:
3. A nurse assesses a client who was started on intraperitoneal therapy 5 days ago. The client reports abdominal pain and feeling warm. For which complication of this therapy should the nurse assess this client?
- A. Allergic reaction
 - B. Bowel obstruction
 - C. Catheter lumen occlusion
 - D. Infection
 
Correct answer: D
Rationale:
4. You are working on a burns unit, and one of your acutely ill patients is exhibiting signs and symptoms of third spacing. Based on this change in status, you should expect the patient to exhibit signs and symptoms of what imbalance?
- A. Metabolic alkalosis
 - B. Hypermagnesemia
 - C. Hypercalcemia
 - D. Hypovolemia
 
Correct answer: D
Rationale: When a patient exhibits signs and symptoms of third-spacing, where fluid moves out of the intravascular space but not into the intracellular space, hypovolemia is expected. This leads to a decreased circulating blood volume. Increased calcium and magnesium levels are not typically associated with third-spacing fluid shift. Burns usually result in acidosis rather than alkalosis, making metabolic alkalosis an incorrect choice. Therefore, hypovolemia is the correct answer in this scenario.
5. Which of the following are sources of water intake?
- A. Drinking fluids.
 - B. Consuming water from the food we eat.
 - C. Water from metabolic processes.
 - D. Drinking fluids, consuming water from the food we eat, and water from metabolic processes.
 
Correct answer: D
Rationale: The correct answer is D. The sources of water intake include drinking fluids, consuming water from the food we eat, and water from metabolic processes. Water intake is not solely from the liquids we drink but also from the water content present in the food we consume and the water produced during metabolic processes such as cellular respiration. Therefore, option D is the correct answer as it covers all the sources of water intake. Options A, B, and C alone do not encompass all the sources of water intake, making them incorrect choices.
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