HESI LPN
Adult Health 2 Exam 1
1. The nurse is caring for a client with an indwelling urinary catheter. What is the most important action to prevent catheter-associated urinary tract infections (CAUTI)?
- A. Perform hand hygiene before and after handling the catheter
- B. Change the catheter every 72 hours
- C. Apply antibiotic ointment at the insertion site
- D. Irrigate the catheter daily
Correct answer: A
Rationale: Performing hand hygiene before and after handling the catheter is crucial in preventing catheter-associated urinary tract infections (CAUTI). This practice helps minimize the risk of introducing harmful microorganisms into the urinary tract. Changing the catheter every 72 hours is not recommended unless clinically indicated as it can increase the risk of infection. Applying antibiotic ointment at the insertion site is not a standard practice and may contribute to antibiotic resistance. Irrigating the catheter daily is unnecessary and can introduce pathogens into the urinary tract, increasing the risk of infection.
2. A client with chronic kidney disease is being evaluated for dialysis. Which laboratory value would be most concerning to the nurse?
- A. Hemoglobin 9.5 g/dL
- B. Potassium 6.2 mEq/L
- C. Creatinine 3.5 mg/dL
- D. BUN 50 mg/dL
Correct answer: B
Rationale: The correct answer is B: Potassium 6.2 mEq/L. In chronic kidney disease, the kidneys struggle to regulate potassium levels, leading to hyperkalemia. A potassium level of 6.2 mEq/L is dangerously high and can cause life-threatening cardiac arrhythmias. Hemoglobin of 9.5 g/dL may indicate anemia, which is common in chronic kidney disease but is not immediately life-threatening. Creatinine and BUN levels are markers of kidney function; although elevated levels indicate kidney impairment, they are not acutely life-threatening like severe hyperkalemia.
3. The nurse is changing the colostomy bag for a client who is complaining of leakage of diarrheal stool under the disposable ostomy bag. What action should the nurse implement to prevent leakage?
- A. Place a 4x4 wick in the stoma opening
- B. Apply a layer of zinc oxide ointment to the perimeter of the stoma
- C. Cut the bag opening to the measurement of the stoma size
- D. Administer a PRN antidiarrheal agent
Correct answer: C
Rationale: To prevent leakage of stool under the disposable ostomy bag, the nurse should cut the bag opening to the measurement of the stoma size. This action ensures a proper fit, which is crucial in preventing leaks that can lead to skin irritation and compromise stoma care. Placing a 4x4 wick in the stoma opening or applying zinc oxide ointment may not address the issue of leakage effectively. Administering a PRN antidiarrheal agent is not directly related to preventing leakage caused by an ill-fitting ostomy bag.
4. A client with chronic kidney disease (CKD) is receiving erythropoietin therapy. What is the primary purpose of this medication?
- A. To lower blood pressure
- B. To improve appetite
- C. To increase red blood cell production
- D. To reduce fluid retention
Correct answer: C
Rationale: The correct answer is C: 'To increase red blood cell production.' Erythropoietin stimulates the production of red blood cells to treat anemia associated with CKD. Choices A, B, and D are incorrect because erythropoietin therapy is primarily used to address anemia by increasing the production of red blood cells rather than lowering blood pressure, improving appetite, or reducing fluid retention.
5. The nurse plans to administer the rubella vaccine to a postpartum client whose titer is < 1:8 and who is breastfeeding. What information should the nurse provide this client?
- A. The client should bottle feed and pump her breast for 3 days following immunization
- B. The vaccine is given to produce maternal antibodies before lactation occurs
- C. The infant will receive immunization through the mother's breast milk
- D. The client should not get pregnant for 3 months after immunization
Correct answer: D
Rationale: Educating about the waiting period helps prevent possible rubella infection in a subsequent early pregnancy.
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