HESI LPN
CAT Exam Practice
1. A 60-year-old male with type 2 diabetes mellitus tells the nurse that he is going to join a gym and start working out. Which information is most important for the nurse to obtain?
- A. Recent serum cholesterol levels
- B. Presence of calf pain during exercise
- C. Average weight gain or loss in the last year
- D. Exercise tolerance test with EKG results
Correct answer: B
Rationale: The most important information for the nurse to obtain in this scenario is the presence of calf pain during exercise. Calf pain during exercise could indicate peripheral vascular issues, such as peripheral artery disease, which is crucial to address before starting an exercise program. High cholesterol levels (choice A) may be important but are not as immediately relevant as assessing for peripheral vascular issues. Average weight gain or loss (choice C) may provide some insight into the patient's overall health status but is not as critical as assessing for potential vascular complications. An exercise tolerance test with EKG results (choice D) may be valuable in assessing cardiovascular fitness but is not as crucial as evaluating for peripheral vascular issues given the patient's symptoms.
2. The nurse is caring for a client with a tracheostomy. Which action should the nurse perform when suctioning the tracheostomy tube?
- A. Increase wall suction while removing the suction catheter
- B. Instill 10 ml of sterile saline into the tracheostomy tube before applying continuous suction
- C. Suction the client’s oropharynx after tracheal suctioning
- D. Insert the suction catheter into the trachea, and apply intermittent suction with removal of the catheter
Correct answer: D
Rationale: When suctioning a tracheostomy tube, it is essential to insert the suction catheter into the trachea and apply intermittent suction with removal of the catheter. This technique helps prevent damage to the trachea and reduces discomfort for the client. Choice A is incorrect because increasing wall suction with the removal of the suction catheter can cause trauma to the tracheal mucosa. Choice B is incorrect because instilling saline into the tracheostomy tube before suctioning is not recommended as it can lead to complications. Choice C is incorrect as oropharyngeal suctioning should be done before tracheal suctioning to prevent the risk of aspiration.
3. A client has a blood glucose level of 70 mg/dl and reports feeling shaky and weak. What is the best initial action by the nurse?
- A. Obtain a fingerstick glucose reading
- B. Administer 15 grams of a fast-acting carbohydrate
- C. Perform a quick assessment of the client’s neuro status
- D. Provide a glass of milk and monitor the client’s symptoms
Correct answer: B
Rationale: Administering 15 grams of a fast-acting carbohydrate is the best initial action to address hypoglycemia symptoms promptly by raising blood glucose levels. This intervention is crucial to prevent further deterioration in the client's condition. Obtaining a fingerstick glucose reading is important but may delay treatment. Performing a quick assessment of the client's neuro status is secondary to addressing the immediate low blood glucose levels. Providing a glass of milk is not the recommended first-line treatment for hypoglycemia; fast-acting carbohydrates are preferred to rapidly increase blood sugar levels.
4. Which techniques should be used to administer an intradermal (ID) injection for a Mantoux test to screen for tuberculosis (TB)? Select all that apply.
- A. Observe for an intradermal bleed after the antigen is injected
- B. Select an ID site using the volar surface of the forearm
- C. Use a 26 or 27-gauge needle with a length of 1/4 to 5/8 inches on a 1 ml calibrated syringe
- D. Ensure that the needle is inserted into the skin with the bevel up
Correct answer: A
Rationale: Observing for an intradermal bleed after the antigen is injected is a proper technique for an ID injection. This is important to confirm the correct placement of the injection. Choice B is correct because the recommended site for an ID injection for a Mantoux test is the volar surface of the forearm. Choice C is incorrect because the standard needle size for an ID injection is usually 26 or 27 gauge with a length of 1/4 to 5/8 inches, not 25 gauge with a length of 1/2 inch. Choice D is incorrect because the needle should be inserted into the skin with the bevel facing up, not down.
5. A client with osteoporosis related to long-term corticosteroid therapy receives a prescription for calcium carbonate. Which client’s serum laboratory value requires intervention by the nurse?
- A. Total calcium 9 mg/dl (2.25 mmol/L SI)
- B. Creatinine 4 mg/dl (354 micromol/L SI)
- C. Phosphate 4 mg/dl (1.293 mmol/L SI)
- D. Fasting glucose 95 mg/dl (5.3 mmol/L SI)
Correct answer: B
Rationale: An elevated creatinine level indicates possible renal impairment, which requires intervention. High creatinine levels are associated with decreased kidney function, and in this case, it suggests potential renal issues due to long-term corticosteroid therapy. Monitoring renal function is crucial in clients with osteoporosis on corticosteroid therapy to prevent further complications. Total calcium levels within the normal range are suitable for a client with osteoporosis receiving calcium carbonate. Phosphate and fasting glucose levels do not directly indicate renal impairment in this scenario.
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