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. When does dehydration begin to occur?
- A. the body reduces fluid output to zero.
- B. the body increases the release of ANH.
- C. the salivary secretions decrease.
- D. the salivary secretions increase.
Correct answer: C
Rationale: Dehydration leads to a decrease in the body's fluid levels, causing the salivary glands to produce less saliva, resulting in a dry mouth. Therefore, when dehydration begins to occur, salivary secretions decrease. Choice A is incorrect because the body does not reduce fluid output to zero during dehydration; it tries to conserve fluids. Choice B is incorrect as dehydration does not directly increase the release of ANH (Atrial Natriuretic Hormone). Choice D is incorrect because salivary secretions do not increase but decrease during dehydration.
3. 1.A nurse prepares to insert a peripheral venous catheter in an older adult client. Which action should the nurse take to protect the clients skin during this procedure?
- A. Lower the extremity below the level of the heart.
- B. Apply warm compresses to the extremity.
- C. Tap the skin lightly and avoid slapping.
- D. Place a washcloth between the skin and tourniquet
Correct answer: D
Rationale:
4. The nurse in the intensive care unit receives arterial blood gases (ABG) with a patient who is complaining of being 'short of breath.' The ABG has the following values: pH = 7.21, PaCO2 = 64 mm Hg, HCO3 = 24 mmol/L. The labs reflect:
- A. Respiratory acidosis
- B. Metabolic alkalosis
- C. Respiratory alkalosis
- D. Metabolic acidosis
Correct answer: A
Rationale: The ABG values indicate respiratory acidosis. A pH below 7.40, a PaCO2 above 40 mm Hg, and a normal HCO3 level (24 mmol/L) suggest respiratory acidosis. In this case, the patient has an acidic pH (7.21) and an elevated PaCO2 (64 mm Hg), indicating inadequate ventilation. The normal HCO3 level suggests that compensation by the kidneys has not occurred, implying an acute event. Choices B, C, and D can be ruled out based on the given ABG values and the criteria for acid-base disorders.
5. A female patient is discharged from the hospital after having an episode of heart failure. She's prescribed daily oral doses of digoxin (Lanoxin) and furosemide (Lasix). Two days later, she tells her community health nurse that she feels weak and her heart 'flutters' frequently. What action should the nurse take?
- A. Tell the patient to rest more often.
- B. Tell the patient to stop taking the digoxin and call the physician.
- C. Call the physician, report the symptoms, and request to draw a blood sample to determine the patient's potassium level.
- D. Tell the patient to avoid foods that contain caffeine.
Correct answer: C
Rationale: The correct action for the nurse to take is to call the physician, report the symptoms, and request to draw a blood sample to determine the patient's potassium level. Furosemide is a potassium-wasting diuretic, and low potassium levels can lead to weakness and palpitations. Resting more often won't address the underlying issue of hypokalemia caused by furosemide. While digoxin can have side effects, it is not causing the symptoms described by the patient. Avoiding caffeine may be beneficial, but addressing the potassium level is more critical in this situation.
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