HESI LPN
CAT Exam Practice
1. Which medication should the nurse anticipate administering to a client who is diagnosed with myxedema coma?
- A. Intravenous administration of thyroid hormones
- B. Oral administration of hypnotic agents
- C. Intravenous bolus of hydrocortisone
- D. Subcutaneous administration of vitamin K
Correct answer: A
Rationale: The correct answer is A: Intravenous administration of thyroid hormones. Myxedema coma is a severe form of hypothyroidism that necessitates immediate replacement of thyroid hormones. Administering thyroid hormones intravenously ensures rapid absorption and effectiveness in managing the condition. Choice B, oral administration of hypnotic agents, is incorrect as it does not address the primary issue of thyroid hormone deficiency in myxedema coma. Choice C, intravenous bolus of hydrocortisone, is not the appropriate treatment for myxedema coma as adrenal insufficiency is not the primary concern in this condition. Choice D, subcutaneous administration of vitamin K, is unrelated to the management of myxedema coma and does not address the underlying thyroid hormone deficiency that characterizes this condition.
2. A 13-year-old girl, diagnosed with diabetes mellitus Type 1 at the age of 9, is admitted to the hospital in diabetic ketoacidosis. Which occurrence is the most likely cause of the ketoacidosis?
- A. Ate an extra peanut butter sandwich before gym class
- B. Incorrectly drew up and administered too much insulin
- C. Was not hungry, so she skipped eating lunch
- D. Has had a cold and ear infection for the past two days
Correct answer: B
Rationale: The correct answer is B. Incorrect insulin administration is a common cause of diabetic ketoacidosis. Administering too much insulin can lead to uncontrolled hyperglycemia, where the body starts breaking down fat for energy, resulting in the production of ketones. Choices A, C, and D are less likely to directly cause diabetic ketoacidosis. Eating an extra peanut butter sandwich, skipping lunch, or having a cold and ear infection would not directly lead to the metabolic derangements seen in diabetic ketoacidosis.
3. A client is receiving lidocaine IV at 3 mg/minute. The pharmacy dispenses a 500 ml IV solution of normal saline (NS) with 2 grams of lidocaine. The nurse should regulate the infusion pump to deliver how many ml/hour?
- A. 18
- B. 27
- C. 36
- D. 45
Correct answer: D
Rationale: The infusion rate is calculated based on the concentration of lidocaine and the prescribed rate of infusion. First, convert lidocaine's weight to milligrams (2 grams = 2000 mg). Then, use the formula: (Total volume in ml * dose in mg) / 60 minutes. For this case, (500 ml * 2000 mg) / 60 minutes = 45 ml/hour. Therefore, the correct answer is D. Choices A, B, and C are incorrect as they do not reflect the accurate calculation based on the provided concentration and infusion rate.
4. Two weeks following a Billroth II (gastrojejunostomy), a client develops nausea, diarrhea, and diaphoresis after every meal. When the nurse develops a teaching plan for this client, which expected outcome statement is the most relevant?
- A. Describes a schedule for antacid use in combination with other prescribed medications
- B. Selects a pattern of small meals interspersed with fluid intake
- C. Commits to engaging in a variety of stress reduction techniques
- D. Expresses a commitment to decrease nicotine intake
Correct answer: B
Rationale: The symptoms described are indicative of dumping syndrome, a common complication following a Billroth II procedure. Dumping syndrome presents with symptoms such as nausea, diarrhea, and diaphoresis after meals. To manage these symptoms effectively, the client should opt for small, frequent meals and avoid consuming fluids along with meals. Choice A is inaccurate because antacid use does not directly address the symptoms of dumping syndrome. Choice C is irrelevant as stress reduction techniques are not the primary intervention for dumping syndrome. Choice D is unrelated to the symptoms experienced by the client, making it an inappropriate choice.
5. When designing a plan of care for a client diagnosed with pheochromocytoma, a goal statement should be prepared that relates to which topic?
- A. Psychological counseling to address emotional well-being
- B. Medication teaching concerning adrenergic blockers
- C. Preoperative and postoperative teaching for adrenalectomy
- D. Education on dietary modifications for hypertension
Correct answer: C
Rationale: The correct answer is C: Preoperative and postoperative teaching for adrenalectomy. Pheochromocytoma often requires adrenalectomy as part of the treatment plan. Therefore, educating the client about what to expect before and after the surgery is crucial for optimal care and outcomes. Choices A, B, and D are incorrect. Choice A focuses on emotional well-being rather than the specific surgical intervention needed for pheochromocytoma. Choice B is unrelated as the primary treatment for pheochromocytoma is surgical rather than medication-based. Choice D, though related to managing hypertension, does not address the surgical aspect of treating pheochromocytoma.
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