HESI LPN
Medical Surgical HESI
1. How is gastroesophageal reflux (GER) typically treated in infants?
- A. By placing the infant NPO
- B. By thickening the formula or breast milk with cereal
- C. By placing the infant to sleep on the side
- D. By switching the infant to cow's milk
Correct answer: B
Rationale: Gastroesophageal reflux (GER) in infants is typically treated by thickening the formula or breast milk with cereal. This helps reduce reflux episodes by making the feedings heavier and less likely to come back up. Placing the infant NPO (nothing by mouth) is not the typical treatment for GER as infants need proper nutrition for growth. Placing the infant to sleep on the side is not recommended due to the risk of SIDS; infants should be placed on their back to sleep. Switching the infant to cow's milk is also not a treatment for GER, as cow's milk can be harder to digest and may exacerbate symptoms.
2. A health care provider orders a tap water enema for a 6-month-old infant with suspected Hirschsprung disease. What rationale causes the nurse to question the order?
- A. The result could lead to loss of necessary nutrients.
- B. It could cause a fluid and electrolyte imbalance.
- C. It could increase the fear of intrusive procedures.
- D. The result could cause shock from a sudden drop in temperature.
Correct answer: B
Rationale: The correct answer is B. Tap water enemas can cause significant fluid and electrolyte imbalances, particularly in infants, making them unsafe for this age group. Choice A is incorrect because tap water enemas do not directly lead to loss of necessary nutrients. Choice C is incorrect as it focuses on emotional impact rather than physiological risks. Choice D is incorrect as shock from a sudden drop in temperature is not a common consequence of a tap water enema in this scenario.
3. What explanation should the nurse provide to the parents of a 6-month-old infant diagnosed with cystic fibrosis?
- A. It is a condition affecting the respiratory and digestive systems.
- B. It is an autoimmune disorder affecting multiple organs.
- C. It is a genetic disorder that can be managed with medication.
- D. It is a condition caused by prenatal exposure to toxins.
Correct answer: A
Rationale: The correct answer is A. Cystic fibrosis is a genetic disorder that primarily affects the respiratory and digestive systems. It results in the production of thick, sticky mucus that can clog the lungs and obstruct the pancreas. This explanation is crucial for parents to understand the impact of the condition on their child's health. Choice B is incorrect because cystic fibrosis is not an autoimmune disorder. Choice C is partially correct in that cystic fibrosis is a genetic disorder, but it requires a comprehensive management approach beyond just medication. Choice D is incorrect as cystic fibrosis is not caused by prenatal exposure to toxins but rather by inheriting specific genetic mutations.
4. A healthcare professional is preparing to administer 750 mL of 0.9% sodium chloride IV to infuse over 7 hr. The professional should set the infusion pump to deliver how many mL/hr? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
- A. 107 mL/hr
- B. 120 mL/hr
- C. 95 mL/hr
- D. 100 mL/hr
Correct answer: A
Rationale: To calculate the infusion rate, divide the total volume (750 mL) by the total time (7 hr). 750 ÷ 7 ≈ 107 mL/hr. Choice A is correct because it accurately calculates the infusion rate based on the total volume and time. Choices B, C, and D are incorrect as they do not reflect the correct calculation for the infusion rate in this scenario.
5. A client with post-traumatic stress disorder (PTSD) is experiencing a flashback. What is the nurse's priority action?
- A. Encourage the client to talk about the trauma.
- B. Help the client to focus on the present.
- C. Administer prescribed anti-anxiety medication.
- D. Leave the client alone to work through the flashback.
Correct answer: B
Rationale: The priority action is to help the client focus on the present (B), which can reduce the intensity of the flashback. Encouraging discussion of the trauma (A) should be done when the client is not actively experiencing a flashback. While medication (C) may be necessary, it is not the first priority in this situation. Leaving the client alone (D) is not appropriate as they need support to manage the flashback.