ATI RN
ATI Fluid and Electrolytes
1. A nurse is caring for a patient who requires measurement of specific gravity every 4 hours. What does this test detect?
- A. Nutritional deficit
- B. Hyperkalemia
- C. Hypercalcemia
- D. Fluid volume status
Correct answer: D
Rationale: Specific gravity is a test used to determine the concentration of solutes in the urine, reflecting the kidney's ability to concentrate urine. Changes in specific gravity can indicate fluid volume status, such as dehydration (fluid volume deficit) or overhydration (fluid volume excess). Options A, B, and C are incorrect as specific gravity does not directly detect nutritional deficits, hyperkalemia, or hypercalcemia.
2. You are the nurse caring for a patient who is to receive IV daunorubicin, a chemotherapeutic agent. You start the infusion and check the insertion site as per protocol. During your most recent check, you note that the IV has infiltrated so you stop the infusion. What is your main concern with this infiltration?
- A. Extravasation of the medication
- B. Discomfort to the patient
- C. Blanching at the site
- D. Hypersensitivity reaction to the medication
Correct answer: A
Rationale:
3. Which substance dissociates into ions in a water solution?
- A. Intracellular fluid
- B. Interstitial fluid
- C. Plasma
- D. Electrolyte
Correct answer: D
Rationale: The correct answer is 'Electrolyte.' Electrolytes are substances that dissociate into ions when dissolved in water. Intracellular fluid, interstitial fluid, and plasma are not substances that dissociate into ions in a water solution. Intracellular fluid is the fluid inside cells, interstitial fluid is the fluid between cells, and plasma is the liquid component of blood. These choices do not dissociate into ions in a water solution, unlike electrolytes.
4. 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.
5. After teaching a client to increase dietary potassium intake, a nurse assesses the client's understanding. Which dietary meal selection indicates the client correctly understands the teaching?
- A. Toasted English muffin with butter and blueberry jam, and tea with sugar
- B. Two scrambled eggs, a slice of white toast, and a half cup of strawberries
- C. Sausage, one slice of whole wheat toast, half cup of raisins, and a glass of milk
- D. Bowl of oatmeal with brown sugar, a half cup of sliced peaches, and coffee
Correct answer: C
Rationale: Choice C is the correct answer as it includes foods high in potassium, such as raisins, whole wheat toast, and milk. Potassium is essential for various bodily functions, including maintaining proper heart and muscle function. Choices A, B, and D do not contain significant sources of potassium. Choice A consists mainly of carbohydrates and sugar, choice B focuses on protein and carbohydrates, and choice D provides carbohydrates and some fruit but lacks high-potassium options like in choice C.
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