ATI RN
ATI Fluid Electrolyte and Acid-Base Regulation
1. The nurse is assessing the patient for the presence of a Chvosteks sign. What electrolyte imbalance would a positive Chvosteks sign indicate?
- A. Hypermagnesemia
- B. Hyponatremia
- C. Hypocalcemia
- D. Hyperkalemia
Correct answer: C
Rationale:
2. A patient is taking spironolactone (Aldactone) to control her hypertension. Her serum potassium level is 6 mEq/L. For this patient, the nurse's priority would be to assess her:
- A. Neuromuscular function
- B. Bowel sounds
- C. Respiratory rate
- D. Electrocardiogram (ECG) results
Correct answer: D
Rationale: In a patient with a serum potassium level of 6 mEq/L due to spironolactone use, the nurse's priority is to assess the Electrocardiogram (ECG) results. Hyperkalemia can lead to life-threatening arrhythmias, such as ventricular fibrillation, which can be detected on an ECG. While changes in neuromuscular function, bowel sounds, and respiratory rate can occur with hyperkalemia, the most critical assessment related to the patient's condition would be monitoring the ECG for signs of cardiac complications.
3. A patient's most recent laboratory results show a slight decrease in potassium. The physician has opted to forego drug therapy but has suggested increasing the patient's dietary intake of potassium. Which of the following would be a good source of potassium?
- A. Apples
- B. Asparagus
- C. Carrots
- D. Bananas
Correct answer: D
Rationale: Bananas are an excellent source of potassium. They are a popular choice for increasing dietary potassium intake due to their rich potassium content. Apples, asparagus, and carrots do not contain as high levels of potassium as bananas. While these fruits and vegetables are nutritious, they are not as effective in addressing a potassium deficiency as bananas.
4. Under normal circumstances, the kidneys provide the greatest means of water loss. Which organ provides the second greatest means of water loss?
- A. Skin
- B. Lungs
- C. Intestines
- D. Muscles
Correct answer: A
Rationale: The correct answer is A: Skin. After the kidneys, the skin is the second largest route of water loss through perspiration. Choice B, Lungs, is incorrect as the lungs primarily exchange gases and do not play a significant role in water loss. Choice C, Intestines, is also incorrect as water loss through the intestines is minimal since most water is reabsorbed during digestion. Choice D, Muscles, is incorrect as muscles are not a major source of water loss in the body.
5. A nurse is assessing clients on a medical-surgical unit. Which clients are at increased risk for hypophosphatemia? (Select all that do not apply.)
- A. A 36-year-old who is malnourished
- B. A 42-year-old with uncontrolled diabetes
- C. A 76-year-old who is prescribed antacids
- D. 50-year-old with hyperparathyroidism
Correct answer: C
Rationale:
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