HESI LPN
Adult Health 2 Exam 1
1. What is the primary function of neutrophils?
- A. Heparin secretion
- B. Transport oxygen
- C. Phagocytotic action
- D. Antibody formation
Correct answer: C
Rationale: The correct answer is C: Phagocytotic action. Neutrophils are key components of the immune system, primarily involved in the phagocytosis of bacteria and other pathogens. Choice A, Heparin secretion, is incorrect as heparin is primarily secreted by mast cells and basophils. Choice B, Transport oxygen, is incorrect as this is mainly the function of red blood cells. Choice D, Antibody formation, is incorrect as antibody production is primarily carried out by B lymphocytes.
2. A client is being treated for dehydration. Which clinical finding would indicate that treatment is effective?
- A. Dry mucous membranes
- B. Increased urine output
- C. Tachycardia
- D. Hypotension
Correct answer: B
Rationale: The correct answer is B: Increased urine output. When a client is being treated for dehydration, increased urine output is a positive indication that the treatment is effective. This signifies that the body is beginning to rehydrate and eliminate excess fluid. Choices A, C, and D are incorrect because dry mucous membranes, tachycardia, and hypotension are all associated with dehydration and would not be signs of effective treatment.
3. What is the most important action to prevent catheter-associated urinary tract infections (CAUTIs) in a client with an indwelling urinary catheter?
- A. Irrigate the catheter daily.
- B. Change the catheter every 72 hours.
- C. Apply antibiotic ointment at the insertion site.
- D. Ensure the catheter bag is always below bladder level.
Correct answer: D
Rationale: The most crucial action to prevent catheter-associated urinary tract infections (CAUTIs) in a client with an indwelling urinary catheter is to ensure that the catheter bag is always below bladder level. This positioning helps prevent backflow of urine, reducing the risk of CAUTIs. Irrigating the catheter daily (Choice A) is unnecessary and can introduce pathogens. Changing the catheter every 72 hours (Choice B) is not recommended unless clinically indicated to prevent introducing new pathogens. Applying antibiotic ointment at the insertion site (Choice C) is not the most important action to prevent CAUTIs; proper hygiene and maintaining a closed system are more critical.
4. The nurse is assessing a newborn and notes that the infant has a yellowish tint to the skin. What should the nurse do next?
- A. Reassure the parents that this is normal
- B. Monitor the infant's bilirubin levels
- C. Increase the frequency of feedings
- D. Administer phototherapy
Correct answer: B
Rationale: When a newborn presents with a yellowish tint to the skin, it can indicate jaundice, which is caused by elevated bilirubin levels. Monitoring the infant's bilirubin levels is crucial to assess the severity of jaundice and determine the need for further intervention. Reassuring the parents without proper assessment could lead to delayed treatment if jaundice is present. Increasing the frequency of feedings may not address the underlying cause of jaundice. Administering phototherapy is a treatment option that should be based on bilirubin level assessment and healthcare provider's recommendation.
5. A new father asks the nurse the reason for placing an ophthalmic ointment in his newborn's eyes. What information should the nurse provide?
- A. Possible exposure to an environmental staphylococcus infection can infect the newborn's eyes and cause visual deficits
- B. The newborn is at risk for blindness from a corneal syphilitic infection acquired from a mother's infected vagina
- C. Treatment prevents tear duct obstruction with harmful exudate from a vaginal birth that can lead to dry eyes in the newborn
- D. State law mandates all newborns receive prophylactic treatment to prevent gonorrheal or chlamydial ophthalmic infection
Correct answer: D
Rationale: The correct answer is D because informing about state law emphasizes the legal requirement and public health rationale behind prophylactic eye treatment to prevent serious infections like gonorrheal or chlamydial ophthalmic infection. Choices A, B, and C are incorrect. Choice A focuses on staphylococcus infection, which is not the primary concern addressed by the prophylactic ointment. Choice B mentions a specific infection acquired from the mother's infected vagina, which is not the main reason for the ophthalmic ointment. Choice C discusses tear duct obstruction and dry eyes, which are not the primary concerns addressed by the prophylactic ointment.
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