HESI RN
HESI RN CAT Exit Exam
1. A client who has a new prescription for warfarin (Coumadin) asks the nurse how the medication works. What explanation should the nurse provide?
- A. It dissolves blood clots
- B. It prevents the blood from clotting
- C. It thins the blood
- D. It decreases the risk of infection
Correct answer: B
Rationale: The correct answer is B: 'It prevents the blood from clotting.' Warfarin works by inhibiting the synthesis of vitamin K-dependent clotting factors in the liver, thereby preventing the formation of blood clots. Choice A is incorrect because warfarin does not dissolve existing blood clots but prevents new ones from forming. Choice C is partially correct but not as specific as choice B in explaining how warfarin works. Choice D is unrelated to the mechanism of action of warfarin and is incorrect.
2. In the change-of-shift report, the nurse is told that a client has a Stage 2 pressure ulcer. Which ulcer appearance is most likely to be observed?
- A. Shallow open ulcer with a red-pink wound bed.
- B. A deep pocket of infection and necrotic tissues.
- C. An area of erythema that is painful to touch.
- D. Visible subcutaneous tissue with sloughing.
Correct answer: A
Rationale: A Stage 2 pressure ulcer typically presents as a shallow open ulcer with a red-pink wound bed. This appearance is characteristic of a Stage 2 pressure ulcer where there is partial thickness skin loss involving the epidermis and possibly the dermis. Choice B, a deep pocket of infection and necrotic tissues, is more indicative of a Stage 3 or Stage 4 pressure ulcer where the ulcer extends into deeper tissue layers. Choice C, an area of erythema that is painful to touch, is more commonly seen in early-stage pressure ulcers such as Stage 1. Choice D, visible subcutaneous tissue with sloughing, is characteristic of a more severe stage of pressure ulcer beyond Stage 2.
3. A client is being treated for tuberculosis (TB). Which of these statements indicates the client understands the transmission of TB?
- A. I need to wear a mask when I go out in public to prevent spreading the infection.
- B. I need to take my medication as prescribed to prevent spreading the infection to others.
- C. I need to cover my mouth when I cough to prevent spreading the infection.
- D. I need to isolate myself from others until my treatment is complete to prevent spreading the infection.
Correct answer: A
Rationale: The correct answer is A because wearing a mask in public can help prevent the spread of TB to others. Choice B is incorrect as taking medication as prescribed helps in treating the infection within the individual but does not directly prevent spreading it to others. Choice C is important for respiratory hygiene but may not be sufficient to prevent transmission. Choice D, isolation until treatment is complete, is crucial for preventing the spread but is not specifically about understanding transmission.
4. A client with type 1 DM is admitted to the hospital with diabetic ketoacidosis (DKA). The nurse should prioritize which action?
- A. Administering intravenous fluids.
- B. Administering oral glucose.
- C. Administering a fever-reducing medication.
- D. Administering oxygen therapy.
Correct answer: A
Rationale: Administering intravenous fluids is the priority in treating DKA for several reasons. DKA is characterized by severe dehydration and electrolyte imbalances due to hyperglycemia. IV fluids help to correct dehydration, restore electrolyte balance, and decrease blood glucose levels. Administering oral glucose (Choice B) would be contraindicated in DKA as the primary issue is high blood glucose levels. Administering a fever-reducing medication (Choice C) is not the priority in managing DKA. Administering oxygen therapy (Choice D) may be necessary in some cases, but correcting dehydration and electrolyte imbalances take precedence in the management of DKA.
5. What are the two primary products of photosynthesis?
- A. Sugar and oxygen
- B. Sugar and carbon dioxide
- C. Oxygen and nitrogen
- D. Nitrogen and carbon dioxide
Correct answer: A
Rationale: The correct answer is A: Sugar and oxygen. During photosynthesis, plants convert carbon dioxide and water into glucose (sugar) and oxygen using sunlight. Choice B, 'Sugar and carbon dioxide,' is incorrect because carbon dioxide is one of the reactants, not a product. Choice C, 'Oxygen and nitrogen,' is incorrect as nitrogen is not a direct product of photosynthesis. Choice D, 'Nitrogen and carbon dioxide,' is incorrect because nitrogen is not a product of photosynthesis, and carbon dioxide is a reactant.