a heparin infusion is prescribed for a client who weighs 220 pounds after administering a bolus dose of 80 unitskg the nurse calculates the infusion r

HESI LPN

CAT Exam Practice Test

1. A heparin infusion is prescribed for a client who weighs 220 pounds. After administering a bolus dose of 80 units/kg, the nurse calculates the infusion rate for the heparin sodium at 18 units/kg/hour. The available solution is Heparin Sodium 25,000 units in 5% Dextrose Injection 250 ml. The nurse should program the infusion pump to deliver how many ml/hour?

A. 18
B. 27
C. 36
D. 45

Correct answer: B

Rationale: To calculate the infusion rate, first, find the total dose required per hour, which is the patient's weight (220 pounds) multiplied by the prescribed rate (18 units/kg/hour). This equals 3960 units/hour. Next, determine how many ml of the solution contain 25,000 units; this is 250 ml. Divide the total dose required per hour (3960 units) by the units per ml (25,000 units/250 ml) to find how many ml are needed per hour. This results in 27 ml/hour. Therefore, the nurse should program the infusion pump to deliver 27 ml/hour. Choice A (18) is incorrect as it does not account for the concentration of the heparin solution. Choices C (36) and D (45) are incorrect as they do not reflect the accurate calculations based on the patient's weight and the heparin concentration in the solution.

2. During a well-child check-up, what respiratory assessment finding should the nurse anticipate in a 3-year-old?

A. A resting respiratory rate of 40 breaths per minute
B. Bronchovesicular breath sounds in the peripheral lung fields
C. Retractions in the intercostal spaces with each inspiration
D. High-pitched whistling sounds over the bronchi

Correct answer: A

Rationale: A resting respiratory rate of 40 breaths per minute is within the expected range for a 3-year-old child. This is considered normal in this age group as their respiratory rate is generally higher compared to adults. Bronchovesicular breath sounds in the peripheral lung fields are not an expected finding in a 3-year-old. Retractions in the intercostal spaces with each inspiration indicate increased work of breathing and are abnormal. High-pitched whistling sounds over the bronchi are characteristic of wheezing, which is not typically expected in a healthy 3-year-old during a routine check-up.

3. The nurse assesses an older adult who is newly admitted to a long-term care facility. The client has dry, flaky skin and long thickened fingernails. The client has a medical history of a stroke which resulted in left-sided paralysis and dysphagia. In planning care for the client, which task should the nurse delegate to the unlicensed personnel (UAP)?

A. Soak and file fingernails
B. Offer fluids frequently
C. Monitor skin elasticity
D. Ambulate in the hallway

Correct answer: A

Rationale: Soaking and filing fingernails is a task that can be delegated to UAP. This task does not require specialized nursing skills and can be safely performed by unlicensed personnel. Offering fluids frequently, monitoring skin elasticity, and ambulating require more skilled assessments and interventions, which are responsibilities of the nurse. The client's dry, flaky skin and long thickened fingernails indicate the need for basic hygiene care, making it appropriate for delegation to unlicensed personnel.

4. The nurse is assessing a 3-month-old infant who had a pylorotomy yesterday. This child should be medicated for pain based on which finding?

A. Restlessness
B. Clenched Fist
C. Increased pulse rate
D. Increased respiratory rate

Correct answer: A

Rationale: In infants, restlessness can be a significant indicator of discomfort or pain, necessitating appropriate pain management. While choices B, C, and D can also be associated with pain, restlessness is a more general and reliable indicator in this scenario. A clenched fist might indicate pain or distress, but it is not as specific as restlessness in assessing pain in infants. Increased pulse rate and respiratory rate can be influenced by various factors other than pain, making them less reliable indicators of pain in this context.

5. A male client with diabetes mellitus takes NPH/regular 70/30 insulin before meals and azithromycin PO daily, using medication he brought from home. When the nurse delivers his breakfast tray, the client tells the nurse that he took his insulin but forgot to take his daily dose of azithromycin an hour before breakfast as instructed. What action should the nurse implement?

A. Provide a PRN dose of an antacid to take with the azithromycin right after breakfast
B. Offer to obtain a new breakfast tray in an hour so the client can take the azithromycin
C. Instruct the client to eat his breakfast and take the azithromycin two hours after eating
D. Tell the client to skip that day's dose and resume taking the azithromycin the next day

Correct answer: C

Rationale: Azithromycin should ideally be taken on an empty stomach; however, if taken after breakfast, it should not affect its efficacy. Instructing the client to eat his breakfast and take the azithromycin two hours after eating allows for proper absorption without compromising its effectiveness. Providing an antacid with azithromycin is not necessary in this case. Offering a new breakfast tray in an hour or skipping the dose is not the best course of action as it may lead to missed doses and potential effectiveness issues.