ATI RN
Fluid and Electrolytes ATI
1. A nurse preparing to start an IV on a newly admitted patient teaches the patient about the procedure and begins to prepare the site. The nurse should always start by:
- A. Leaving one hand ungloved to assess the site
- B. Preparing the skin with an iodine solution
- C. Asking the patient if they are allergic to latex or iodine
- D. Removing excessive hair at the selected site
Correct answer: C
Rationale: Before preparing the skin, the nurse should ask the patient if they are allergic to latex or iodine, which are commonly used in IV therapy setup. This is crucial to prevent potential allergic reactions at the IV site or even life-threatening anaphylaxis. Leaving one hand ungloved (choice A) is not a recommended practice as both hands should be gloved for infection control. While preparing the skin with an iodine solution (choice B) is a step in the process, ensuring the patient's safety by checking for allergies comes first. Removing excessive hair at the selected site (choice D) is not necessary and can lead to skin irritation.
2. 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:
3. A nurse in the neurologic ICU has orders to infuse a hypertonic solution into a patient with increased intracranial pressure. This solution will increase the number of dissolved particles in the patients blood, creating pressure for fluids in the tissues to shift into the capillaries and increase the blood volume. This process is best described as which of the following?
- A. Hydrostatic pressure
- B. Osmosis and osmolality
- C. Diffusion
- D. Active transport
Correct answer: B
Rationale:
4. You are working on a burns unit, and one of your acutely ill patients is exhibiting signs and symptoms of third spacing. Based on this change in status, you should expect the patient to exhibit signs and symptoms of what imbalance?
- A. Metabolic alkalosis
- B. Hypermagnesemia
- C. Hypercalcemia
- D. Hypovolemia
Correct answer: D
Rationale: Third spacing refers to the loss of fluid from the intravascular space into the interstitial or third space, leading to a decrease in circulating blood volume. This condition results in hypovolemia, which is characterized by decreased blood volume. Metabolic alkalosis, hypermagnesemia, and hypercalcemia are not directly associated with third spacing. Metabolic alkalosis is an acid-base imbalance, hypermagnesemia is an excess of magnesium in the blood, and hypercalcemia is an excess of calcium in the blood, none of which are the primary concerns in cases of third spacing.
5. A patient admitted with a gastrointestinal bleed and anemia is receiving a blood transfusion. Based on the patient's hypotensive blood pressure, the nurse anticipates an order for IV fluids from the physician. Which of the following IV solutions may be administered with blood products?
- A. D5 and 0.45% Normal Saline
- B. Lactated Ringer's
- C. 5% dextrose in water
- D. 0.9% NaCl
Correct answer: D
Rationale: The correct answer is D: 0.9% NaCl. The only IV solution that can be administered with blood products is normal saline (0.9% NaCl). This solution is compatible with most blood products and is commonly used during transfusions to maintain hemodynamic stability. Choices A, B, and C are incorrect. Choice A, D5 and 0.45% Normal Saline, contains dextrose and is not recommended to be given simultaneously with blood products. Choice B, Lactated Ringer's, contains calcium, which can cause coagulation and should not be mixed with blood. Choice C, 5% dextrose in water, is hypotonic and not suitable to be administered with blood products.
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