ATI RN
ATI Fluid Electrolyte and Acid-Base Regulation Questions
Question 1 of 5
. A nurse is planning care for a nephrology patient with a new nursing graduate. The nurse states, A patient in renal failure partially loses the ability to regulate changes in pH. What is the cause of this partial inability?
Correct Answer: C
Rationale: Rationale: C is correct because in renal failure, the kidneys lose the ability to regenerate and reabsorb bicarbonate, which is essential for maintaining a stable pH level in the body. B is incorrect because the kidneys primarily regulate pH by controlling bicarbonate levels, not through electrolyte changes. A is incorrect because the kidneys do not regulate carbonic acid in the same way. D is incorrect as it does not accurately describe the process of pH regulation in the kidneys.
Question 2 of 5
Diagnostic testing has been ordered to differentiate between normal anion gap acidosis and high anion gap acidosis in an acutely ill patient. What health problem typically precedes normal anion gap acidosis?
Correct Answer: D
Rationale: The correct answer is D: Excessive administration of chloride. Normal anion gap acidosis is commonly caused by an excessive intake of chloride-containing solutions like normal saline during treatment. This leads to an increase in the plasma chloride concentration, causing a decrease in the anion gap. Metastases (A) are not typically associated with normal anion gap acidosis. Excessive potassium intake (B) would not lead to normal anion gap acidosis but rather hyperkalemia. Water intoxication (C) can lead to dilutional hyponatremia but not normal anion gap acidosis.
Question 3 of 5
You are caring for a patient with a diagnosis of pancreatitis. The patient was admitted from a homeless shelter and is a vague historian. The patient appears malnourished and on day 3 of the patients admission total parenteral nutrition (TPN) has been started. Why would you know to start the infusion of TPN slowly?
Correct Answer: B
Rationale: The correct answer is B: Malnourished patients receiving parenteral nutrition are at risk for hypophosphatemia if calories are started too aggressively. Patient with pancreatitis may have depleted levels of phosphorus due to malnutrition, and rapid initiation of TPN can further decrease phosphorus levels, leading to hypophosphatemia. This can result in respiratory failure, muscle weakness, and arrhythmias. Choice A is incorrect because patients receiving TPN are not specifically at risk for hypercalcemia due to rapid initiation of calories. Choice C is incorrect because rapid fluid infusion can lead to hypernatremia, not related to TPN initiation. Choice D is incorrect because the rationale provided for slow initiation is not related to digestive enzymes but rather to prevent hypophosphatemia in malnourished patients.
Question 4 of 5
A nurse is caring for a client who has the following laboratory results: potassium 3.4 mEq/L, magnesium 1.8 mEq/L, calcium 8.5 mEq/L, sodium 144 mEq/L. Which assessment should the nurse complete first?
Correct Answer: D
Rationale: The correct answer is D: Read food labels to determine sodium content. The nurse should assess the client's sodium level of 144 mEq/L, which is slightly above the normal range. High sodium intake can lead to fluid retention, hypertension, and other health issues. By reading food labels to determine sodium content, the nurse can identify sources of high sodium intake in the client's diet and provide appropriate dietary recommendations. This assessment is crucial in managing the client's sodium levels and overall health. Assessing the client's dietary intake of foods high in potassium (Choice A) is not the priority in this case since the client's potassium level is within the normal range. Assessing the client's neuromuscular status (Choice B) is important but not the first priority when considering the electrolyte imbalances present. Assessing the client's fluid intake and output (Choice C) is also important but does not address the immediate concern related to the client's elevated sodium level.
Question 5 of 5
A nurse is caring for an older adult client who is admitted with moderate dehydration. Which intervention should the nurse implement to prevent injury while in the hospital?
Correct Answer: D
Rationale: The correct answer is D because dangling the client on the bedside before ambulating helps prevent orthostatic hypotension and potential falls. This step allows the nurse to assess the client's tolerance to changes in position and reduces the risk of injury. A: Asking family members to speak quietly does not directly address the prevention of injury related to dehydration. B: Assessing urine parameters is important for monitoring hydration status but does not directly prevent injury. C: Encouraging fluid intake is important for rehydration but does not directly address the risk of injury during ambulation.
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