CAT Exam Practice

HESI LPN

1. 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.

2. The healthcare provider prescribes potassium chloride 25 mEq in 500 ml D5W to infuse over 6 hours. The available 20 ml vial of potassium chloride is labeled '10 mEq/5 ml.' How many ml of potassium chloride should the nurse add to the IV fluid?

A. 12.5
B. 5
C. 10
D. 20

Correct answer: B

Rationale: To prepare 25 mEq of potassium chloride for the infusion, the nurse should add 5 ml of the 10 mEq/5 ml solution. This concentration provides the required amount of potassium chloride without exceeding the needed volume. Choice A would result in 12.5 mEq, which exceeds the prescribed amount. Choices C and D are incorrect as they do not align with the correct calculation based on the vial concentration.

3. The public health nurse received funding to initiate a primary prevention program in the community. Which program best fits the nurse’s proposal?

A. Case management and screening for clients with HIV.
B. Regional relocation center for earthquake victims.
C. Vitamin supplements for high-risk pregnant women.
D. Lead screening for children in low-income housing.

Correct answer: C

Rationale: The correct answer is C: Vitamin supplements for high-risk pregnant women. This option aligns with primary prevention by preventing deficiencies before they occur, which is a key aspect of primary prevention. Providing vitamin supplements to high-risk pregnant women can help prevent birth defects and complications. Choices A, B, and D do not align with primary prevention strategies. Case management and screening for clients with HIV (Choice A) is more of a secondary prevention strategy aimed at early detection and management. A regional relocation center for earthquake victims (Choice B) is focused on addressing the aftermath of a disaster rather than preventing it. Lead screening for children in low-income housing (Choice D) is more about early detection and intervention rather than primary prevention.

4. During an admission assessment on an HIV positive client diagnosed with Pneumocystis carinii pneumonia (PCP), which symptoms should the nurse carefully observe the client for?

A. Weight loss exceeding 10 percent of baseline body weight
B. Altered mental status and tachypnea
C. Creamy white patches in the oral cavity
D. Normal ABGs with wet lung sounds in all lung fields

Correct answer: B

Rationale: The correct answer is B: Altered mental status and tachypnea. These symptoms are indicative of PCP and severe HIV progression. Weight loss exceeding 10 percent of baseline body weight (choice A) may be seen in HIV/AIDS but is not specific to PCP. Creamy white patches in the oral cavity (choice C) are characteristic of oral thrush, which is more commonly associated with Candida infections in HIV patients. Normal ABGs with wet lung sounds in all lung fields (choice D) would not be expected with PCP, as it typically presents with hypoxemia and diffuse bilateral infiltrates on chest imaging.

5. The nurse is planning care for a family whose children did not receive childhood immunizations. After one of the children contracted mumps, the father is diagnosed with orchitis. Which intervention should be included in the father's plan of care?

A. Use of bedrest with scrotal support
B. Administration of antibiotics for 10 days
C. Applying heat to promote the healing process
D. Using an ice pack to reduce scrotal pain

Correct answer: A

Rationale: For orchitis, the recommended intervention is bedrest with scrotal support. This helps reduce swelling and discomfort in the scrotum. Antibiotics are generally not required for viral orchitis, so administering antibiotics for 10 days (Choice B) is not indicated. Applying heat (Choice C) may worsen swelling and should be avoided. Using an ice pack (Choice D) is not the preferred method for managing orchitis; it may not be as effective as providing support and rest for the scrotum.