HESI LPN
HESI CAT Exam Quizlet
1. A school nurse is called to the soccer field because a child has a nosebleed (epistaxis). In what position should the nurse place the child?
- A. Sitting up and leaning forward
- B. Reclining with head elevated
- C. Sitting up with head tilted back
- D. Lying flat on the back
Correct answer: A
Rationale: The correct position for a child with a nosebleed (epistaxis) is sitting up and leaning forward. This position helps prevent blood from flowing into the throat and causing choking. Choice B, reclining with the head elevated, and choice D, lying flat on the back, are incorrect as they can cause blood to flow backward into the throat. Choice C, sitting up with the head tilted back, is also incorrect as it can lead to blood flowing down the back of the throat and potentially into the airway.
2. 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.
3. 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.
4. The nurse is caring for a comatose client. Which assessment finding provides the greatest indication that the client has an open airway?
- A. The client has asymmetrical chest expansion
- B. Percussion reveals dullness over the lung area
- C. Bilateral breath sounds can be auscultated
- D. The client has been turned q2h
Correct answer: C
Rationale: The correct answer is C: "Bilateral breath sounds can be auscultated." This finding indicates that air is moving adequately in and out of both lungs, confirming an open airway. Options A, B, and D are incorrect. Asymmetrical chest expansion may indicate lung or chest wall abnormalities, percussion revealing dullness over the lung area may suggest consolidation or fluid, and turning the client q2h is a position change intervention to prevent complications, not a direct assessment of airway patency.
5. When caring for a client with acute respiratory distress syndrome (ARDS), why does the nurse elevate the head of the bed 30 degrees?
- A. To reduce abdominal pressure on the diaphragm
- B. To promote retraction of the intercostal accessory muscles of respiration
- C. To promote bronchodilation and effective airway clearance
- D. To decrease pressure on the medullary center which stimulates breathing
Correct answer: A
Rationale: Elevating the head of the bed to 30 degrees is done to reduce abdominal pressure on the diaphragm, aiding in lung expansion and oxygenation. This position helps improve respiratory mechanics by allowing the diaphragm to move more effectively. Choice B is incorrect as elevating the head of the bed does not directly promote retraction of the intercostal accessory muscles of respiration. Choice C is incorrect because although elevating the head of the bed can assist with airway clearance, its primary purpose in ARDS is to decrease pressure on the diaphragm. Choice D is incorrect because reducing pressure on the medullary center is not the main goal of elevating the head of the bed; the focus is on enhancing lung function and oxygen exchange.
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