HESI LPN
CAT Exam Practice
1. The nurse is assessing a client with Addison's disease who is weak, dizzy, disoriented, and has dry oral mucous membranes, poor skin turgor, and sunken eyes. Vital signs are blood pressure 94/44, heart rate 123 beats/minute, respiration 22 breaths/minute. Which intervention should the nurse implement first?
- A. Assess extremity strength and resistance
- B. Report a sodium level of 132 mEq/L or mmol/L (SI units)
- C. Measure and record the cardiac QRS complex
- D. Check current finger stick glucose
Correct answer: D
Rationale: The client’s symptoms suggest possible adrenal crisis or hypoglycemia. Checking glucose is a priority to rule out hypoglycemia, which requires immediate intervention. The client is presenting with symptoms indicative of hypoglycemia, which can be life-threatening if not promptly addressed. Assessing extremity strength, reporting sodium levels, or measuring the cardiac QRS complex are not the most urgent actions in this scenario.
2. A client has a history of vasovagal attacks resulting in brady-dysrhythmias. Which instruction is most important to include in the teaching plan?
- A. Use stool softeners regularly
- B. Avoid electromagnetic fields
- C. Maintain a low-fat diet
- D. Do not use aspirin products
Correct answer: A
Rationale: The correct answer is A: 'Use stool softeners regularly.' Vasovagal attacks can be triggered by straining, and using stool softeners can help prevent such attacks. Choices B, C, and D are not directly related to preventing vasovagal attacks in this context. Avoiding electromagnetic fields, maintaining a low-fat diet, or not using aspirin products are important for various health reasons but not specifically for preventing vasovagal attacks related to brady-dysrhythmias.
3. A nurse working on an endocrine unit should see which client first?
- A. An adolescent male with diabetes who is arguing about his insulin dose.
- B. An older client with Addison’s disease whose current blood sugar level is 62mg/dl (3.44 mmol/l).
- C. An adult with a blood sugar of 384mg/dl (21.31mmol/l) and urine output of 350 ml in the last hour.
- D. A client taking corticosteroids who has become disoriented in the last two hours.
Correct answer: B
Rationale: The correct answer is B. The client with Addison’s disease and a blood sugar level of 62mg/dl (3.44 mmol/l) is experiencing hypoglycemia, which can progress to adrenal crisis. This situation requires immediate attention to prevent further complications. Choices A, C, and D, although concerning, do not pose an immediate life-threatening risk compared to the client with Addison’s disease and hypoglycemia. The adolescent arguing about his insulin dose can be addressed after stabilizing the client with Addison’s disease. The adult with high blood sugar and increased urine output may have hyperglycemia but is not in immediate danger. The client taking corticosteroids who is disoriented needs evaluation but is not in an acute life-threatening condition as the client with hypoglycemia.
4. A client has had several episodes of clear, watery diarrhea that started yesterday. What action should the nurse implement?
- A. Administer a prescribed PRN antiemetic
- B. Assess the client for the presence of hemorrhoids
- C. Check the client’s hemoglobin level
- D. Review the client’s current list of medications
Correct answer: D
Rationale: The correct action for the nurse to implement in a client experiencing clear, watery diarrhea is to review the client's current list of medications. Certain medications can cause diarrhea as a side effect, so identifying any potential culprits is essential. Administering an antiemetic (Choice A) is not appropriate for diarrhea, as antiemetics are used to control nausea and vomiting, not diarrhea. Assessing for hemorrhoids (Choice B) is not the priority when the client is experiencing watery diarrhea; addressing the root cause is crucial. Checking the client’s hemoglobin level (Choice C) is not the immediate action needed for this situation as it does not directly address the cause of diarrhea.
5. A client with acute renal failure (ARF) is admitted for uncontrolled type 1 diabetes mellitus and hyperkalemia. The nurse administers an IV dose of regular insulin per sliding scale. Which intervention is the most important for the nurse to include in this client’s plan of care?
- A. Monitor the client’s cardiac activity via telemetry.
- B. Maintain venous access with an infusion of normal saline.
- C. Assess glucose levels via finger stick every 4 to 6 hours.
- D. Evaluate hourly urine output for the return of normal renal function.
Correct answer: A
Rationale: Monitoring cardiac activity is crucial in this scenario because hyperkalemia can lead to serious cardiac dysrhythmias, which can be life-threatening. Regular monitoring of the client’s cardiac activity via telemetry allows for early detection of any potential cardiac complications. Maintaining venous access with a normal saline infusion is important for hydration but does not address the immediate risk of cardiac dysrhythmias posed by hyperkalemia. Assessing glucose levels is essential in diabetes management but is not the priority when dealing with hyperkalemia-induced cardiac risks. Evaluating hourly urine output for the return of normal renal function is important in ARF but is not as urgent as monitoring the client's cardiac activity in the context of hyperkalemia.
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