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. After 2 days of treatment for dehydration, a child continues to vomit and have diarrhea. Normal saline is infusing, and the child’s urine output is 50ml/hour. During morning assessment, the nurse determines that the child is lethargic and difficult to arouse. Which action should the nurse implement?
- A. Perform a finger stick glucose test
- B. Increase the IV fluid flow rate
- C. Review 24-hour intake and output
- D. Obtain arterial blood gases
Correct answer: A
Rationale: Lethargy and difficulty arousing may indicate hypoglycemia, which should be assessed before other actions. Performing a finger stick glucose test is crucial to evaluate the child's blood sugar levels and address hypoglycemia promptly. Increasing the IV fluid flow rate is not indicated without knowing the glucose status. Reviewing 24-hour intake and output is important but not the priority when lethargy and difficulty arousing are present. Obtaining arterial blood gases is not the primary assessment needed in this situation.
3. An older adult resident of a long-term care facility has a 5-year history of hypertension. The client has a headache and rates the pain 5 on a pain scale of 0 to 10. The client’s blood pressure is currently 142/89. Which interventions should the nurse implement? (Select all that apply)
- A. Administer the scheduled daily dose of lisinopril.
- B. Assess the client for postural hypotension.
- C. Notify the healthcare provider immediately.
- D. Provide a PRN dose of acetaminophen for the headache.
Correct answer: A
Rationale: In this scenario, the client's blood pressure of 142/89 is within an acceptable range for someone with a history of hypertension. The client's headache with a pain rating of 5 does not warrant an immediate notification to the healthcare provider. Administering the scheduled dose of lisinopril is appropriate to manage the client's hypertension. Assessing the client for postural hypotension is relevant due to the client's age and hypertension history. Providing a PRN dose of acetaminophen for the headache is not necessary at this point as the pain level is moderate and can be managed with other interventions.
4. The nurse is performing a peritoneal dialysis exchange on a client with chronic kidney disease (CKD). Which assessment finding should the nurse report to the healthcare provider?
- A. The appearance of the returning dialysate fluid is cloudy
- B. The client complains of slight shortness of breath during installation
- C. The amount of the returning dialysate fluid is greater than the amount instilled
- D. The client complains of abdominal fullness and cramping during instillation
Correct answer: A
Rationale: Cloudy dialysate fluid can indicate peritonitis, a serious complication of peritoneal dialysis. Peritonitis is an urgent condition that requires immediate evaluation and treatment. Reporting this finding promptly is crucial to prevent further complications. Choices B, C, and D are not indicative of peritonitis and do not require immediate reporting to the healthcare provider. Complaining of slight shortness of breath, having a greater return volume, and experiencing abdominal fullness and cramping are common occurrences during peritoneal dialysis and do not necessarily indicate an emergent issue.
5. 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.
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