HESI LPN
HESI Fundamentals Exam
1. Postoperative client with fluid volume deficit. Which change indicates successful treatment?
- A. Decrease in heart rate
- B. Increase in blood pressure
- C. Decrease in respiratory rate
- D. Increase in urine output
Correct answer: A
Rationale: A decrease in heart rate can indicate improved fluid balance and successful treatment of fluid volume deficit. When a client is experiencing fluid volume deficit, the heart rate typically increases as a compensatory mechanism to maintain cardiac output. As fluid volume is restored and the deficit is corrected, the heart rate should decrease back towards a normal range. Choices B, C, and D are less likely to be directly related to the successful treatment of fluid volume deficit. An increase in blood pressure may occur as a compensatory response to fluid volume deficit; a decrease in respiratory rate is not a typical indicator of fluid volume deficit correction; and an increase in urine output can be a sign of improved kidney function but may not directly reflect fluid volume status.
2. The nurse is assessing a client with a diagnosis of pheochromocytoma. Which symptom should the nurse expect to find?
- A. Hypertension
- B. Bradycardia
- C. Hypoglycemia
- D. Weight gain
Correct answer: A
Rationale: The correct answer is A: Hypertension. Pheochromocytoma is characterized by the overproduction of catecholamines, leading to symptoms such as hypertension. Bradycardia (Choice B) is not typical in pheochromocytoma as increased catecholamines usually lead to tachycardia. Hypoglycemia (Choice C) and weight gain (Choice D) are not commonly associated symptoms of pheochromocytoma.
3. A nurse is preparing to administer ketorolac 0.5 mg/kg IV bolus every 6 hr to a school-age child who weighs 66 lb. The available ketorolac injection is 30 mg/mL. How many mL should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
- A. 0.5 mL
- B. 1 mL
- C. 1.5 mL
- D. 2 mL
Correct answer: A
Rationale: To calculate the dose, first convert the weight from pounds to kilograms. The child weighs 66 lb, which is approximately 30 kg. The prescribed dose is 0.5 mg/kg, so for a 30 kg child, the dose would be 0.5 mg/kg x 30 kg = 15 mg. Since the available ketorolac injection is 30 mg/mL, the nurse should administer 15 mg ÷ 30 mg/mL = 0.5 mL per dose. Therefore, choice A (0.5 mL) is the correct answer. Choices B, C, and D are incorrect as they do not accurately calculate the correct dose based on the child's weight and the concentration of the ketorolac injection.
4. When administering an otic medication to an older adult client, which action should the nurse take to ensure that the medication reaches the inner ear?
- A. Press gently on the tragus of the client's ear
- B. Pack a small piece of cotton deep into the client's ear canal
- C. Move the client's auricle down and back toward their head
- D. Tilt the client's head backward for 5 minutes
Correct answer: A
Rationale: The correct action to ensure that otic medication reaches the inner ear is to press gently on the tragus. The tragus is a small cartilaginous projection in front of the ear canal. Pressing on it helps to straighten the ear canal, allowing the medication to reach the inner ear. Packing cotton or moving the auricle can obstruct the ear canal and prevent proper medication delivery. Tilting the client's head backward is not necessary and may not facilitate the medication reaching the inner ear as effectively as pressing on the tragus.
5. A client is receiving chemotherapy for breast cancer. Which laboratory value would be most important for the nurse to monitor?
- A. White blood cell count
- B. Hemoglobin level
- C. Serum creatinine
- D. Blood glucose level
Correct answer: A
Rationale: The correct answer is to monitor the white blood cell count. Chemotherapy can lead to neutropenia, which is a decrease in white blood cells, particularly neutrophils. Neutropenia increases the risk of infections, making it crucial to monitor the white blood cell count during chemotherapy. Monitoring hemoglobin level is important but not as critical as white blood cell count in this scenario. Serum creatinine and blood glucose levels are not directly impacted by chemotherapy for breast cancer, making them less relevant to monitor in this situation.
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