ATI RN
ATI Fluid Electrolyte and Acid-Base Regulation
1. A nurse assesses a client who is prescribed a medication that inhibits aldosterone secretion and release. For which potential complications should the nurse assess? (Select all that apply.)
- A. Urine output of 25 mL/hr
- B. Serum potassium level of 5.4 mEq/L
- C. Blood osmolality of 250 mOsm/L
- D.
Correct answer: A
Rationale:
2. 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:
3. When preparing a site for the insertion of an IV catheter, how should excess hair at the site be treated?
- A. Leaving the hair intact
- B. Shaving the area
- C. Clipping the hair in the area
- D. Removing the hair with a depilatory
Correct answer: C
Rationale: The correct answer is to clip the hair in the area. Excess hair at the site of IV catheter insertion should be removed because it can be a potential source of infection. Clipping the hair is preferred over shaving because shaving can cause skin abrasions, increasing the risk of infection. Using depilatories is not recommended as they can irritate the skin, which is undesirable when preparing a clean site for an invasive procedure. Therefore, clipping the hair in the area is the most appropriate and safe method to prepare the site for IV catheter insertion.
4. You are performing an admission assessment on an older adult patient newly admitted for end-stage liver disease. What principle should guide your assessment of the patient's skin turgor?
- A. Overhydration is common among healthy older adults.
- B. Dehydration causes the skin to appear spongy.
- C. Inelastic skin turgor is a normal part of aging.
- D. Skin turgor cannot be assessed in patients over 70.
Correct answer: C
Rationale: Inelastic skin is a normal change of aging. However, this does not mean that skin turgor cannot be assessed in older patients. Dehydration, not overhydration, causes inelastic skin with tenting. Overhydration, not dehydration, causes the skin to appear edematous and spongy. Choice A is incorrect because overhydration is not common among healthy older adults. Choice B is incorrect because dehydration leads to inelastic skin, not sponginess. Choice D is incorrect as skin turgor assessment can be done in patients of any age, including those over 70.
5. What is the most abundant positive ion in blood plasma?
- A. Potassium.
- B. Calcium.
- C. Sodium.
- D. Both potassium and sodium are in equal concentrations.
Correct answer: C
Rationale: The correct answer is C: Sodium. Sodium (Na+) is the most abundant cation in the extracellular fluid, including blood plasma. It plays a crucial role in maintaining fluid balance, nerve function, and is essential for various physiological processes. Choice A, Potassium, is also an important ion in the body but is predominantly found intracellularly. Choice B, Calcium, is an essential mineral in the body but is not the most abundant positive ion in blood plasma. Choice D is incorrect as sodium is the primary positive ion in blood plasma, with a much higher concentration compared to potassium.
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