HESI LPN
HESI Fundamentals Study Guide
1. A healthcare professional is preparing to administer 0.9% sodium chloride (0.9% NaCl) 250 mL IV to infuse over 30 min. The drop factor of the manual IV tubing is 10 gtt/mL. How many gtt/min should the healthcare professional adjust the manual IV infusion to deliver? (Round the answer to the nearest whole number. Do not use a trailing zero.)
- A. 83 gtt/min
- B. 125 gtt/min
- C. 100 gtt/min
- D. 75 gtt/min
Correct answer: C
Rationale: To administer 250 mL over 30 min with a drop factor of 10 gtt/mL, the healthcare professional should adjust the IV infusion to deliver 100 gtt/min. The correct calculation is: (250 mL ÷ 30 min) x 10 gtt/mL = 100 gtt/min. This rate ensures the proper administration of the IV solution within the specified time frame. Choices A, B, and D are incorrect as they do not align with the accurate calculation based on the provided data.
2. A client is experiencing a severe sore throat, pain when swallowing, and swollen lymph nodes. Which of the following stages of infection is the client likely in?
- A. Prodromal
- B. Incubation
- C. Convalescence
- D. Illness
Correct answer: D
Rationale: The client in this scenario is in the illness stage of infection. During this stage, the individual exhibits specific symptoms such as a severe sore throat, pain when swallowing, and swollen lymph nodes. The prodromal stage precedes the appearance of specific symptoms and is characterized by nonspecific signs. The incubation period occurs between exposure to the pathogen and the onset of symptoms. Convalescence is the recovery period following the resolution of the infection. Therefore, the correct answer is 'D: Illness' as it aligns with the symptoms presented by the client.
3. When administering otic ear medication to an adult client, what action should be done to ensure the medication reaches the inner ear?
- A. Press gently on the tragus of the client’s ear.
- B. Pull the ear lobe up and back.
- C. Insert the medication deeply into the ear canal.
- D. Massage the ear gently after administering the medication.
Correct answer: A
Rationale: The correct action to ensure the medication reaches the inner ear is to press gently on the tragus of the client’s ear. The tragus is the small pointed eminence of the external ear, and pressing on it helps direct the medication deeper into the ear canal. Pulling the ear lobe up and back (Choice B) is the correct technique for administering eardrops to a child, not an adult. Inserting the medication deeply into the ear canal (Choice C) can cause injury or discomfort as the eardrops are designed to flow into the ear canal naturally. Massaging the ear gently after administering the medication (Choice D) is unnecessary and may not help the medication reach the inner ear effectively.
4. The client is being taught how to use a peak flow meter. The nurse explains that this device should be used to:
- A. Determine oxygen saturation
- B. Measure forced expiratory volume
- C. Monitor the atmosphere for the presence of allergens
- D. Provide metered doses for inhaled bronchodilator
Correct answer: B
Rationale: A peak flow meter is used to measure forced expiratory volume, which helps in monitoring asthma. This measurement provides valuable information about how well the client's lungs are functioning and how narrow their airways are. Choice A is incorrect because determining oxygen saturation is typically done using a pulse oximeter. Choice C is incorrect as a peak flow meter is not used to monitor the atmosphere for allergens but rather to assess lung function. Choice D is incorrect as providing metered doses for inhaled bronchodilators is the function of a metered-dose inhaler, not a peak flow meter.
5. A client has a sodium level of 125. What findings should the nurse expect?
- A. Abdominal cramping
- B. Elevated blood pressure
- C. Decreased heart rate
- D. Increased thirst
Correct answer: A
Rationale: Low sodium levels (hyponatremia) often present with various symptoms, including abdominal cramping. Abdominal cramping is a common manifestation of hyponatremia due to the altered electrolyte balance. Option B ('Elevated blood pressure') is incorrect because low sodium levels typically lead to decreased blood pressure, not elevated. Option C ('Decreased heart rate') is incorrect as low sodium levels are more likely to cause an irregular heart rate rather than a decreased heart rate. Option D ('Increased thirst') is incorrect because excessive thirst is more commonly associated with high sodium levels (hypernatremia) rather than low sodium levels.
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