HESI LPN
HESI Fundamentals Study Guide
1. When admitting a 5-month-old who has vomited 9 times in the past 6 hours, what should the healthcare provider observe for signs of which overall imbalance?
- A. Metabolic acidosis
- B. Metabolic alkalosis
- C. Increased serum hemoglobin levels
- D. Decreased serum potassium levels
Correct answer: B
Rationale: When a 5-month-old infant vomits multiple times, there is a risk of developing metabolic alkalosis due to the loss of stomach acid. Metabolic alkalosis is characterized by elevated pH and bicarbonate levels. It is caused by the loss of hydrogen ions from the body, often through vomiting. Metabolic acidosis (choice A) is unlikely in this scenario because it is more commonly associated with conditions like renal failure or diabetic ketoacidosis. Choice C, increased serum hemoglobin levels, is not typically a direct consequence of vomiting. Choice D, decreased serum potassium levels, may occur with vomiting but is not the primary concern when a patient is vomiting excessively.
2. The nurse is planning a meal plan that would provide the most iron for a child with anemia. Which dinner menu would be best?
- A. Fish sticks, french fries, banana, cookies, milk
- B. Ground beef patty, lima beans, wheat roll, raisins, milk
- C. Chicken nuggets, macaroni, peas, cantaloupe, milk
- D. Peanut butter and jelly sandwich, apple slices, milk
Correct answer: B
Rationale: The correct answer is B. Ground beef, lima beans, and raisins are rich sources of iron, making this meal plan the most suitable for a child with anemia. Ground beef is a high-iron meat, while lima beans and raisins are also excellent sources of iron. Fish sticks, french fries, banana, and cookies in option A lack sufficient iron content compared to the options in B. Chicken nuggets, macaroni, and peas in option C are not as iron-rich as the ground beef, lima beans, and raisins in option B. Peanut butter and jelly sandwich with apple slices in option D also fall short in providing enough iron when compared to the iron-rich components of option B.
3. A client is receiving continuous IV fluid therapy via a peripheral vein in the left forearm. Which of the following findings indicates that the client has developed phlebitis at the IV site?
- A. Erythema along the path of the vein
- B. Pitting edema at the insertion site
- C. Coolness of the client’s left forearm
- D. Pallor of the client’s left forearm
Correct answer: A
Rationale: Erythema (redness) along the path of the vein is a classic sign of phlebitis, indicating inflammation of the vein. This occurs due to irritation or infection at the IV site. Pitting edema (choice B) is not typically associated with phlebitis but suggests fluid overload or poor circulation. Coolness (choice C) and pallor (choice D) of the forearm are not characteristic signs of phlebitis but may indicate impaired circulation or reduced blood flow to the area.
4. A nurse is assessing the heart sounds of a client who has developed chest pain that becomes worse with inspiration. The nurse auscultates a high-pitched scratching sound during both systole and diastole with the diaphragm of the stethoscope positioned at the left sternal border. Which of the following heart sounds should the nurse document?
- A. Pericardial friction rub
- B. Mitral stenosis
- C. Aortic regurgitation
- D. Tricuspid stenosis
Correct answer: B
Rationale: The correct answer is B: Mitral stenosis. A high-pitched scratching sound heard during both systole and diastole with the diaphragm of the stethoscope positioned at the left sternal border indicates mitral stenosis, not a pericardial friction rub. Pericardial friction rub is a to-and-fro, grating, or scratching sound due to inflamed pericardial surfaces rubbing together, typically heard in early diastole and late systole. Aortic regurgitation and tricuspid stenosis would present with different auscultatory findings compared to the described scenario, making them incorrect choices in this context.
5. A 73-year-old female client had a hemiarthroplasty of the left hip yesterday due to a fracture resulting from a fall. In reviewing hip precautions with the client, which instruction should the LPN/LVN include in this client's teaching plan?
- A. You will be able to bend at the waist to reach items on the floor in 8 weeks.
- B. Place a pillow between your knees while lying in bed to prevent hip dislocation.
- C. It is safe to use a walker to get out of bed, but you need assistance when walking.
- D. Take pain medication 30 minutes after your physical therapy sessions.
Correct answer: B
Rationale: The correct instruction to include in the teaching plan for a client who had a hemiarthroplasty of the left hip is to 'Place a pillow between your knees while lying in bed to prevent hip dislocation.' This technique helps maintain proper hip alignment and prevents dislocation during the postoperative recovery period. Choice A is incorrect because bending at the waist to reach items on the floor can strain the hip joint and is not recommended following hip surgery. Choice C is incorrect because using a walker alone without assistance can increase the risk of falls and injury, especially in the immediate postoperative period. Choice D is incorrect because pain medication should be taken as prescribed by the healthcare provider, not specifically timed after physical therapy sessions.
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