ATI RN
ATI Fluid Electrolyte and Acid-Base Regulation
1. A nurse assesses a client who was started on intraperitoneal therapy 5 days ago. The client reports abdominal pain and feeling warm. For which complication of this therapy should the nurse assess this client?
- A. Allergic reaction
- B. Bowel obstruction
- C. Catheter lumen occlusion
- D. Infection
Correct answer: D
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. A patient has questioned the nurses administration of IV normal saline, asking whether sterile water would be a more appropriate choice than saltwater. Under what circumstances would the nurse administer electrolyte-free water intravenously?
- A. Never, because it rapidly enters red blood cells, causing them to rupture.
- B. When the patient is severely dehydrated resulting in neurologic signs and symptoms
- C. When the patient is in excess of calcium and/or magnesium ions
- D. When a patients fluid volume deficit is due to acute or chronic renal failure
Correct answer: A
Rationale:
4. Which hormones increase the amount of water in the body?
- A. ADH
- B. Aldosterone
- C. ANH
- D. ADH and aldosterone
Correct answer: D
Rationale: The correct answer is D, ADH and aldosterone. Both antidiuretic hormone (ADH) and aldosterone increase water retention by the kidneys, thereby increasing blood volume. ADH acts on the kidneys to increase water reabsorption, while aldosterone acts on the kidneys to promote sodium reabsorption, leading to water retention. Choice A, ADH, is partially correct as it alone increases water retention. Choice B, aldosterone, is also partially correct as it alone increases water retention. Choice C, ANH (atrial natriuretic hormone), actually decreases water retention by promoting sodium excretion and inhibiting aldosterone release.
5. A nurse assesses a client who is admitted with an acid-base imbalance. The clients arterial blood gas values are pH 7.32, PaO2 85 mm Hg, PaCO2 34 mm Hg, and HCO3 16 mEq/L. What action should the nurse take next?
- A. Assess clients rate, rhythm, and depth of respiration.
- B. Measure the clients pulse and blood pressure.
- C. Document the findings and continue to monitor.
- D. Notify the physician as soon as possible.
Correct answer: A
Rationale:
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