Nokea
The patient has just returned from having an arteriovenous fistula placed. The patient asks, “When will they be able to use this and take this other catheter out?” The nurse should reply,
- A. “It can be used immediately, so the catheter can come out anytime.”
- B. “It will take 2 to 4 weeks to heal before it can be used.”
- C. “The fistula will be usable in about 4 to 6 weeks.”
- D. “The fistula was made using graft material, so it depends on the manufacturer.”
Correct Answer: C
Rationale: The correct answer is C: “The fistula will be usable in about 4 to 6 weeks.” This is because arteriovenous fistulas typically require a maturation period of 4 to 6 weeks before they can be used for dialysis. During this time, the fistula will develop into a strong, durable access point for hemodialysis.
Choice A is incorrect because the fistula needs time to mature before it can be used, and immediate use may damage it. Choice B is incorrect as it underestimates the maturation period required. Choice D is incorrect as the maturation time does not depend on the manufacturer but on the patient's physiology and healing process.
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Which of the following are appropriate nursing interventions for the patient in myxedema coma? (Select all that apply.)
- A. Administer levothyroxine as prescribed.
- B. Encourage the intake of foods high in sodium.
- C. Initiate passive rewarming interventions.
- D. Monitor airway and respiratory effort.
Correct Answer: A
Rationale: Correct Answer: A
Rationale:
1. Administering levothyroxine is crucial in treating myxedema coma as it helps replace the deficient thyroid hormone.
2. This intervention addresses the underlying cause of myxedema coma, which is severe hypothyroidism.
3. Levothyroxine administration can help reverse the symptoms of myxedema coma and improve the patient's condition.
Summary of Incorrect Choices:
- B: Encouraging high sodium intake is not appropriate as myxedema coma is associated with fluid retention and sodium may exacerbate this.
- C: Passive rewarming interventions are not relevant for myxedema coma, as the condition is not typically related to hypothermia.
- D: While monitoring airway and respiratory effort is important in general patient care, it is not a specific intervention for myxedema coma.
Slow continuous ultrafiltration is also known as isolated ultrafiltration and is used to
- A. remove plasma water in cases of volume overload.
- B. remove fluids and solutes through the process of convection.
- C. remove plasma water and solutes by adding dialysate.
- D. combine ultrafiltration, convection, and dialysis.
Correct Answer: A
Rationale: Rationale:
Slow continuous ultrafiltration is a method used to remove excess plasma water in cases of volume overload, making choice A the correct answer. This process does not involve adding dialysate (choice C) or combining ultrafiltration, convection, and dialysis (choice D). While ultrafiltration does involve the removal of fluids and solutes, it is primarily achieved through ultrafiltration rather than convection (choice B).
A patient is receiving hydrocortisone sodium succinate for adrenal crisis. What other medication does the nurse prepare to administer?
- A. Regular insulin
- B. A proton pump inhibitor
- C. Canagliflozin
- D. Propranolol
Correct Answer: B
Rationale: The correct answer is B: A proton pump inhibitor. When a patient is receiving hydrocortisone for adrenal crisis, it can lead to increased gastric acid secretion. A proton pump inhibitor helps reduce acid production and prevents gastric ulcers. Regular insulin (A) is not typically indicated in this scenario. Canagliflozin (C) is a medication used for diabetes management and is not relevant here. Propranolol (D) is a beta-blocker and may mask signs of hypoglycemia when used with insulin, which is not suitable in this case.
The removal of plasma water and some low–molecular weight particles by using a pressure or osmotic gradient is known as
- A. dialysis.
- B. diffusion.
- C. clearance.
- D. ultrafiltration.
Correct Answer: D
Rationale: The correct answer is D: ultrafiltration. Ultrafiltration involves the removal of plasma water and low-molecular weight particles using a pressure or osmotic gradient. This process allows small molecules to pass through a semipermeable membrane while retaining larger molecules. Dialysis (A) involves the removal of waste products and excess fluids from the blood, while diffusion (B) is the movement of molecules from an area of high concentration to low concentration. Clearance (C) refers to the rate at which a substance is removed from the blood by a specific organ or process. Ultrafiltration specifically targets the removal of plasma water and low-molecular weight particles through a pressure or osmotic gradient, making it the correct choice in this context.
The nurse is caring for an elderly patient who was admitted with renal insufficiency. An expected laboratory finding for this patient may be
- A. an increased glomerular filtration rate (GFR).
- B. a normal serum creatinine level.
- C. increased ability to excrete drugs.
- D. hypokalemia.
Correct Answer: C
Rationale: Correct Answer: C - Increased ability to excrete drugs.
Rationale:
1. Renal insufficiency impairs kidney function, leading to decreased excretion of drugs.
2. In elderly patients with renal insufficiency, there may be compensatory mechanisms to enhance drug excretion.
3. This increased ability to excrete drugs helps prevent drug accumulation and potential toxicity.
Summary:
A: Increased GFR is not expected in renal insufficiency; it typically decreases.
B: Serum creatinine level would likely be elevated in renal insufficiency, not normal.
D: Hypokalemia is not a typical lab finding in renal insufficiency; hyperkalemia is more common.