ATI RN
ATI Fluid Electrolyte and Acid-Base Regulation
1. A nurse assesses a client who has a radial artery catheter. Which assessment should the nurse complete first?
- A. . Amount of pressure in fluid container
- B. Date of catheter tubing change
- C. Percent of heparin in infusion container
- D. . Presence of an ulnar pulse
Correct answer: D
Rationale:
2. What is the main force that pushes fluid in blood capillaries?
- A. Blood pressure.
- B. Sodium in the blood plasma.
- C. Sodium in the interstitial fluid.
- D. Protein in the blood plasma.
Correct answer: A
Rationale: The correct answer is A, blood pressure. Blood pressure is the primary force that pushes fluid out of the capillaries into the surrounding tissues. This pressure difference is essential for the exchange of nutrients, gases, and waste products between the blood and tissues. Choices B, C, and D are incorrect as they do not represent the primary force responsible for pushing fluid in blood capillaries.
3. Place a washcloth between the skin and tourniquet
- A. Provide a bed bath instead of letting the client take a shower
- B. Use sterile technique when changing the dressing.
- C. Disconnect the intravenous fluid tubing prior to the clients bath.
- D. Use a plastic bag to cover the extremity with the device
Correct answer: D
Rationale:
4. A nurse in the medical-surgical unit has a newly admitted patient who is oliguric; the acute care nurse practitioner orders a fluid challenge of 100 to 200 mL of normal saline solution over 15 minutes. The nurse is aware this intervention will help:
- A. Distinguish hyponatremia from hypernatremia
- B. Evaluate pituitary gland function
- C. Distinguish reduced renal blood flow from decreased renal function
- D. Provide an effective treatment for hypertension-induced oliguria
Correct answer: C
Rationale: Administering a fluid challenge in oliguric patients helps to distinguish reduced renal blood flow from decreased renal function. This intervention aids in determining whether the oliguria is due to reduced renal blood flow (such as in fluid volume deficit or prerenal azotemia) or decreased renal function (such as in acute tubular necrosis). The response to this challenge can indicate the underlying cause. Choices A, B, and D are incorrect as they do not align with the purpose of a fluid challenge in oliguric patients.
5. . A 73-year-old man comes into the emergency department (ED) by ambulance after slipping on a small carpet in his home. The patient fell on his hip with a resultant fracture. He is alert and oriented; his pupils are equal and reactive to light and accommodation. His heart rate is elevated, he is anxious and thirsty, a Foley catheter is placed, and 40 mL of urine is present. What is the nurses most likely explanation for the low urine output?
- A. The man urinated prior to his arrival to the ED and will probably not need to have the Foley catheter kept in place.
- B. The man likely has a traumatic brain injury, lacks antidiuretic hormone (ADH), and needs vasopressin.
- C. The man is experiencing symptoms of heart failure and is releasing atrial natriuretic peptide that results in decreased urine output.
- D. The man is having a sympathetic reaction, which has stimulated the reninangiotensinaldosterone system that results in diminished urine output.
Correct answer: D
Rationale:
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