HESI LPN
HESI CAT Exam
1. The healthcare provider prescribes a fluid challenge of 0.9% sodium chloride 1,000 ml to be infused over 4 hours. The IV administration set delivers 10gtt/ml. How many gtt/minute should the nurse regulate the infusion? (Enter a numeric value only. If rounding is required, round to the nearest whole number.)
- A. 42
- B.
- C.
- D.
Correct answer: A
Rationale: To calculate the rate: (1000 ml / 4 hours) = 250 ml/hour; (250 ml/hour) / (60 minutes/hour) = 4.17 ml/minute; (4.17 ml/minute) * (10 gtt/ml) = 41.7 gtt/minute, rounded to 42 gtt/minute. Therefore, the nurse should regulate the infusion at 42 gtt/minute to deliver the prescribed fluid challenge accurately. The other choices are incorrect as they do not reflect the correct calculation based on the given information.
2. When attempting to establish risk reduction strategies in a community, the nurse notes that regional studies indicate a high number of persons with growth stunting and irreversible mental deficiencies caused by hypothyroidism (cretinism). The nurse should seek funding to implement which screening measure?
- A. T3 levels in school-aged children
- B. T4 levels in newborns
- C. TSH levels in women over 45
- D. Iodine levels in all persons over 60
Correct answer: B
Rationale: Screening T4 levels in newborns is crucial as it helps in the early detection of hypothyroidism, which can prevent conditions like cretinism. Checking T3 levels in school-aged children (Choice A) is not the most appropriate measure for early detection of hypothyroidism in newborns. Monitoring TSH levels in women over 45 (Choice C) is not directly related to detecting hypothyroidism in newborns. Additionally, monitoring iodine levels in all persons over 60 (Choice D) is not specifically aimed at early detection of hypothyroidism in newborns, which is crucial to prevent cretinism.
3. The client is assessing a client who was recently diagnosed with heart failure and is on a low-sodium diet. Which statement by the client indicates a need for further teaching?
- A. “I will use lemon juice and herbs for flavoring.”
- B. “I will not eat canned soups or frozen dinners.”
- C. “I can have salt substitutes to enhance the taste of my food.”
- D. “I will check the food labels for sodium content before buying.”
Correct answer: C
Rationale: The correct answer is C. Some salt substitutes can be high in potassium, which may not be suitable for clients with heart failure. Option A is correct as using lemon juice and herbs for flavoring is a good low-sodium alternative. Option B is also correct as canned soups and frozen dinners are typically high in sodium content. Option D is correct as checking food labels for sodium content is an essential part of managing a low-sodium diet. Therefore, the client's statement about using salt substitutes needs correction as it can introduce high levels of potassium, which may not be recommended for individuals with heart failure.
4. The nurse is assessing an infant with pyloric stenosis. Which pathophysiological mechanism is the most likely consequence of this infant’s clinical picture?
- A. Metabolic acidosis
- B. Metabolic alkalosis
- C. Respiratory alkalosis
- D. Respiratory acidosis
Correct answer: B
Rationale: Pyloric stenosis often leads to metabolic alkalosis due to the loss of gastric acid from vomiting. Metabolic acidosis would not be expected in pyloric stenosis as there is no excessive acid accumulation. Respiratory alkalosis and respiratory acidosis are not typically associated with pyloric stenosis, making them incorrect choices.
5. An older male client with a history of type 1 diabetes has not felt well for the past few days and arrives at the clinic with abdominal cramping and vomiting. He is lethargic, moderately confused, and cannot remember when he took his last dose of insulin or ate last. What action should the nurse implement first?
- A. obtain a serum potassium level
- B. administer the client's usual dose of insulin
- C. assess pupillary response to light
- D. Start an intravenous (IV) infusion of normal saline
Correct answer: D
Rationale: Administering IV fluids is crucial to address potential dehydration and electrolyte imbalances, especially if the client is unable to provide a clear history. Starting an IV infusion of normal saline will help rehydrate the client and address any electrolyte imbalances, which are common in clients with diabetes experiencing symptoms like abdominal cramping and vomiting. Obtaining a serum potassium level can be important but is not the priority when the client is showing signs of dehydration and confusion. Administering insulin should only be done after addressing hydration and electrolyte status. Assessing pupillary response to light is not the most critical action in this situation compared to addressing dehydration and potential electrolyte imbalances.
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