ATI RN
ATI Fluid Electrolyte and Acid-Base Regulation
1. A nurse assesses a client who is admitted for treatment of fluid overload. Which manifestations should the nurse expect to find? (Select all that do not apply.)
- A. Increased pulse rate
- B. . Distended neck veins
- C. Warm and pink skin
- D. Skeletal muscle weakness
Correct answer: C
Rationale:
2. Which of the following is not considered an extracellular fluid?
- A. Cerebrospinal fluid
- B. The humors of the eye
- C. Lymph
- D. Cerebrospinal fluid and the humors of the eye
Correct answer: D
Rationale: The correct answer is D. Cerebrospinal fluid and the humors of the eye are not considered extracellular fluids. Extracellular fluids are fluids found outside the cells, such as interstitial fluid and lymph. Cerebrospinal fluid is found within the central nervous system, while the humors of the eye (aqueous humor and vitreous humor) are located within the eyeball, making them distinct from extracellular fluids.
3. A patient who is in renal failure partially loses the ability to regulate changes in pH because the kidneys:
- A. Regulate and reabsorb carbonic acid to change and maintain pH
- B. Buffer acids through electrolyte changes
- C. Regenerate and reabsorb bicarbonate to maintain a stable pH
- D. Combine carbonic acid and bicarbonate to maintain a stable pH
Correct answer: C
Rationale: The correct answer is C. In renal failure, the kidneys lose the ability to regulate pH by controlling bicarbonate levels in the extracellular fluid (ECF). The kidneys can regenerate and reabsorb bicarbonate ions to maintain a stable pH. Choices A, B, and D are incorrect because the kidneys do not primarily regulate or reabsorb carbonic acid, buffer acids through electrolyte changes, or combine carbonic acid and bicarbonate to maintain pH. The key function of the kidneys in maintaining pH balance lies in the control of bicarbonate levels.
4. Which of the following statements is correct?
- A. People with less body fat have more body water.
- B. Infants have more water per pound than adults.
- C. Females have more body water per pound than males.
- D. Infants have the same water content per pound as adults.
Correct answer: A
Rationale: The correct statement is that people with less body fat have more body water. This is because fat tissue contains less water compared to lean tissue, so individuals with less body fat generally have a higher percentage of body water. Choice B is incorrect as infants actually have more water per pound than adults due to their higher body water content. Choice C is incorrect as males typically have more body water per pound than females. Choice D is incorrect as infants have a higher water content per pound compared to adults.
5. The nurse caring for a patient post colon resection is assessing the patient on the second postoperative day. The nasogastric tube (NG) remains patent and continues at low intermittent wall suction. The IV is patent and infusing at 125 mL/hr. The patient reports pain at the incision site rated at a 3 on a 0-to-10 rating scale. During your initial shift assessment, the patient complains of cramps in her legs and a tingling sensation in her feet. Your assessment indicates decreased deep tendon reflexes (DTRs) and you suspect the patient has hypokalemia. What other sign or symptom would you expect this patient to exhibit
- A. Diarrhea
- B. Dilute urine
- C. Increased muscle tone
- D. Joint pain
Correct answer: B
Rationale:
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