HESI LPN
CAT Exam Practice Test
1. Following a gunshot wound, an adult client has a hemoglobin level of 4 grams/dl (40 mmol/L SI). The nurse prepares to administer a unit of blood for an emergency transfusion. The client has AB negative blood type and the blood bank sends a unit of type A Rh negative, reporting that there is not type AB negative blood currently available. Which intervention should the nurse implement?
- A. Transfuse Type A negative blood until type AB negative is available.
- B. Recheck the client’s hemoglobin, blood type, and Rh factor.
- C. Administer normal saline solution until type AB negative is available.
- D. Obtain additional consent for the administration of type A negative blood.
Correct answer: A
Rationale: In emergency situations where AB negative blood is unavailable, type A negative blood can be transfused to a patient with AB negative blood type. Type A negative blood is compatible with AB negative blood, making it a suitable option until the correct blood type becomes available. Transfusion of Type A negative blood is crucial to address the severe anemia promptly. Rechecking the client’s hemoglobin, blood type, and Rh factor (Choice B) may delay necessary treatment. Administering normal saline solution (Choice C) is not a substitute for blood transfusion in cases of severe anemia. Obtaining additional consent for the administration of type A negative blood (Choice D) is unnecessary as the situation is emergent and the blood type is compatible.
2. The healthcare provider prescribes potassium chloride 25 mEq in 500 ml D5W to infuse over 6 hours. The available 20 ml vial of potassium chloride is labeled '10 mEq/5 ml.' How many ml of potassium chloride should the nurse add to the IV fluid?
- A. 12.5
- B. 5
- C. 10
- D. 20
Correct answer: B
Rationale: To prepare 25 mEq of potassium chloride for the infusion, the nurse should add 5 ml of the 10 mEq/5 ml solution. This concentration provides the required amount of potassium chloride without exceeding the needed volume. Choice A would result in 12.5 mEq, which exceeds the prescribed amount. Choices C and D are incorrect as they do not align with the correct calculation based on the vial concentration.
3. When preparing to discharge a male client who has been hospitalized for an adrenal crisis, the client expresses concern about having another crisis. He tells the nurse that he wants to stay in the hospital a few more days. Which intervention should the nurse implement?
- A. Administer antianxiety medication before providing discharge instructions
- B. Schedule a follow-up appointment for an outpatient psychosocial assessment
- C. Obtain a blood cortisol level before discharge
- D. Encourage the client to remain in the hospital for a few more days
Correct answer: B
Rationale: The correct intervention is to schedule a follow-up appointment for an outpatient psychosocial assessment. This option addresses the client's concerns and provides support for managing stress and preventing future crises, which is crucial for the client's long-term care. Administering antianxiety medication before providing discharge instructions (Choice A) may not effectively address the underlying concerns. Obtaining a blood cortisol level before discharge (Choice C) is important but not the priority in this situation. Encouraging the client to remain in the hospital for a few more days (Choice D) is not the best course of action as it may not address the client's anxiety and could potentially lead to other issues.
4. When caring for a client with diabetes insipidus (DI), it is most important for the nurse to include frequent assessment for which conditions in the client’s plan of care?
- A. Dry mucous membranes, hypotension
- B. Decreased appetite, headache
- C. Nausea and vomiting, muscle weakness
- D. Elevated blood pressure, petechiae
Correct answer: A
Rationale: Dry mucous membranes and hypotension are key indicators of dehydration in clients with diabetes insipidus. The excessive urination associated with DI can lead to fluid loss, resulting in dehydration. Therefore, monitoring for signs such as dry mucous membranes and hypotension is crucial to assess the client's hydration status. Choices B, C, and D are not directly related to the characteristic symptoms of DI and are less relevant in the context of this condition. Decreased appetite and headache (Choice B) are nonspecific symptoms that may occur in various conditions. Nausea, vomiting, and muscle weakness (Choice C) are not typical manifestations of DI. Elevated blood pressure and petechiae (Choice D) are not commonly associated with DI; instead, hypotension is more commonly observed due to volume depletion.
5. A client with active tuberculosis (TB) is receiving isoniazid (INH) and rifampin (RMP) daily, so direct observation therapy (DOT) is initiated while the client is hospitalized. Which instruction should the nurse provide this client?
- A. Describe feelings about taking daily medications
- B. Take medications in the presence of the nurse
- C. Notify the nurse after self-medication is completed
- D. Keep a daily record of all medications taken
Correct answer: B
Rationale: The correct instruction for the nurse to provide the client undergoing direct observation therapy for TB is to take medications in the presence of the nurse. This approach ensures that the client is actually taking the medications as prescribed, reducing the risk of noncompliance. Choice A is incorrect because the focus should be on ensuring the client physically takes the medications rather than discussing feelings. Choice C is incorrect as it does not ensure direct observation. Choice D is incorrect because self-reporting or keeping a record does not guarantee that the client is actually taking the medications.
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