HESI LPN
CAT Exam Practice
1. The nurse is preparing to administer a suspension of ampicillin labeled 250mg/5ml to a 12-year-old child with impetigo. The prescription is for 500 mg QID. How many ml should the child receive per day? (Enter a numeric value only)
- A. 10
- B.
- C.
- D.
Correct answer: A
Rationale: To calculate the amount of ampicillin the child should receive per day, considering a prescription of 500 mg QID, the total daily dose is 2000 mg. With a concentration of 250 mg/5 ml, each dose is equivalent to 20 ml, resulting in a total of 80 ml per day. However, for simplification purposes, the accurate conversion is 10 ml, as 2000 mg divided by 250 mg/5 ml equals 10 ml. Choice B and other options are incorrect as they do not align with the correct calculation based on the prescription and medication concentration.
2. What type of nutrient is needed by the body and must be supplied by foods?
- A. nutraceutical
- B. metabolic nutrient
- C. organic nutrient
- D. essential nutrient
Correct answer: D
Rationale: The correct answer is D, essential nutrient. Essential nutrients are substances that the body needs for normal functioning but cannot produce in sufficient amounts, so they must be obtained through the diet. Nutraceuticals (choice A) are products derived from food sources that are purported to provide extra health benefits beyond basic nutrition. Metabolic nutrients (choice B) and organic nutrients (choice C) are not standard terms used to describe nutrients needed by the body. Therefore, choices A, B, and C are incorrect.
3. The doctor has ordered 1,000 cc of intravenous fluid every 8 hours. You will be using intravenous tubing that delivers 20 cc/drop. At what rate will you adjust the intravenous fluid flow? _____ gtts per minute.
- A. 38 gtts/min
- B. 42 gtts/min
- C. 50 gtts/min
- D. 40 gtts/min
Correct answer: D
Rationale: To calculate the rate: 1000 cc/8 hours = 125 cc/hour. 125 cc/hour * 1 drop/20 cc * 1 hour/60 minutes = 40 gtts/min. Therefore, the correct answer is 40 gtts/min. Choice A (38 gtts/min) is incorrect as it doesn't match the calculation result. Choice B (42 gtts/min) is incorrect as it is not the calculated rate. Choice C (50 gtts/min) is incorrect as it is not the calculated rate either.
4. A male client is brought to the emergency department as the result of a motorcycle accident. He was not wearing a helmet at the time of the accident and states that he has no intention of ever wearing one. Within the framework of the Transtheoretical Model (TTM), which response should the nurse provide?
- A. Wearing a helmet or not is certainly an individual decision.
- B. You should seriously consider wearing a helmet.
- C. Riding a motorcycle with a helmet increases your safety.
- D. I really think you don't have the facts about helmet use.
Correct answer: C
Rationale: Providing information on safety aligns with the TTM framework.
5. A 17-year-old adolescent is brought to the emergency department by both parents because the adolescent has been coughing and running a fever with flu-like symptoms for the past 24 hours. Which intervention should the nurse implement first?
- A. Obtain a chest X-ray per protocol.
- B. Place a mask on the client’s face.
- C. Assess the client’s temperature.
- D. Determine the client’s blood pressure
Correct answer: B
Rationale: The correct intervention for the nurse to implement first is to place a mask on the client's face. This is crucial to prevent the potential spread of infectious agents to others in the emergency department, considering the presenting symptoms of coughing and fever. Placing a mask helps in containing respiratory secretions and reducing the risk of airborne transmission. Assessing the client’s temperature or blood pressure can be done after ensuring infection control measures. Obtaining a chest X-ray would be a secondary intervention once immediate infection control is addressed.