HESI LPN
HESI PN Exit Exam 2023
1. Which of the following dietary modifications should be recommended for a patient with chronic kidney disease (CKD)?
- A. High protein, low sodium
- B. Low protein, high potassium
- C. Low sodium, low potassium
- D. High calcium, low phosphorus
Correct answer: C
Rationale: A low sodium, low potassium diet is often recommended for patients with CKD to manage fluid balance and prevent electrolyte imbalances that the kidneys can no longer regulate effectively. High protein diets, as mentioned in choice A, can put extra strain on the kidneys, making it an incorrect choice. Choice B, which suggests a low protein, high potassium diet, is also incorrect because high potassium levels can be harmful to individuals with CKD. Choice D, advocating for a high calcium, low phosphorus diet, is not the typical dietary recommendation for CKD patients, even though managing calcium and phosphorus levels is important in their diet.
2. What is the primary function of surfactant in the lungs?
- A. Reduce surface tension
- B. Enhance oxygen absorption
- C. Facilitate carbon dioxide release
- D. Increase lung volume
Correct answer: A
Rationale: The primary function of surfactant in the lungs is to reduce surface tension in the alveoli. This reduction in surface tension prevents lung collapse and allows for easier breathing. It is particularly crucial in premature infants to help with lung expansion. Choice B is incorrect because surfactant primarily affects surface tension, not oxygen absorption. Choice C is incorrect because surfactant's main role is not in facilitating carbon dioxide release. Choice D is incorrect because surfactant does not directly increase lung volume; its main role is in reducing surface tension.
3. The nurse is teaching a client with diabetes mellitus how to differentiate between hypoglycemia and ketoacidosis. What statement indicates to the nurse that the client has an understanding of this condition?
- A. Glucose should be taken if I have a fruity breath odor.
- B. Glucose should be taken if I am urinating more than usual.
- C. Glucose should be taken if I have blurred vision.
- D. Glucose should be taken if I develop shakiness.
Correct answer: D
Rationale: The correct answer is D. Shakiness is a symptom of hypoglycemia, which is low blood sugar. Taking glucose can help raise blood sugar levels quickly in this situation. Fruity breath odor and excessive urination are signs of ketoacidosis, a complication of diabetes involving high levels of ketones in the blood. Blurred vision can be a symptom of high blood sugar, but it is not specific to hypoglycemia.
4. The PN notes that a UAP is ambulating a male client who had a stroke and has right-sided weakness. The UAP is walking on the client's left side. Which action should the PN take?
- A. Instruct the UAP to walk on the client's affected side
- B. Take over the ambulation and provide guidance to the UAP immediately
- C. Provide the client with an assistive device, such as a cane or walker
- D. Tell the UAP to take the client back to his room
Correct answer: A
Rationale: The correct action for the PN to take is to instruct the UAP to walk on the client’s affected side. This is essential to provide the necessary support and prevent falls, especially when the client has weakness on one side due to a stroke. Walking on the affected side helps provide stability and assistance to the weaker side. Choice B is incorrect because it would be more appropriate for the PN to provide immediate guidance and correct the UAP's positioning rather than taking over the task completely. Choice C is incorrect because while assistive devices may be beneficial, the immediate concern is the UAP's positioning during ambulation, not providing the client with an assistive device. Choice D is incorrect as there is no indication to return the client to his room unless it is necessary for his safety or well-being.
5. Before administering an antibiotic that can cause nephrotoxicity, which lab value is most important for the nurse to review?
- A. Hemoglobin and Hematocrit
- B. Serum Calcium
- C. Serum Creatinine
- D. WBC
Correct answer: C
Rationale: The correct answer is C: Serum Creatinine. Serum creatinine is a key indicator of kidney function. Reviewing this value is crucial as it helps assess the client's risk for nephrotoxicity before administering the antibiotic. Elevated serum creatinine levels can indicate impaired kidney function, which would increase the risk of nephrotoxicity. Choices A, B, and D are not as directly related to kidney function and nephrotoxicity. Hemoglobin and hematocrit levels assess for anemia, serum calcium levels monitor calcium balance, and WBC count evaluates for infections. While these values are important for overall patient assessment, they are not as specific to assessing nephrotoxicity risk as serum creatinine.
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