ATI LPN
ATI Nutrition Proctored Exam 2019 Answers
1. How is the enzyme trypsin activated?
- A. By zymogen.
- B. By bile.
- C. By gastrin.
- D. By enterokinase.
Correct answer: D
Rationale: The correct answer is D: By enterokinase. Trypsin is activated by enterokinase, an enzyme secreted by the small intestine. Enterokinase plays a crucial role in converting trypsinogen into its active form, trypsin. Choices A, B, and C are incorrect because trypsin is specifically activated by enterokinase, not by zymogen, bile, or gastrin.
2. Which of the following is a more reliable indicator of perfusion in children than in adults?
- A. Blood pressure
- B. Heart rate
- C. Respiratory rate
- D. Capillary refill
Correct answer: D
Rationale: Capillary refill is a more reliable indicator of perfusion in children than in adults. This is because children have more compliant vessels, making capillary refill a more sensitive indicator of perfusion status in this population. In contrast, while blood pressure, heart rate, and respiratory rate are important indicators, they may not be as reliable in children as capillary refill. Blood pressure can be affected by various factors such as anxiety or pain, heart rate can be influenced by emotions or temperature, and respiratory rate may vary with activity levels. Therefore, capillary refill is preferred in children for a more accurate assessment of perfusion.
3. A client who had a vaginal delivery 4 hours ago has a fourth-degree perineal laceration. Which of the following interventions should the nurse recommend?
- A. Encourage ambulation
- B. Apply ice packs
- C. Restrict the client's fluid intake
- D. Administer stool softeners
Correct answer: B
Rationale: Correct Answer: Applying ice packs is the most appropriate intervention for a client with a fourth-degree perineal laceration. Ice packs help reduce swelling and promote comfort, aiding in the healing process. Choice A, encouraging ambulation, may not be suitable immediately after a fourth-degree laceration due to the need for rest and proper wound care. Choice C, restricting fluid intake, is not indicated and can lead to dehydration, which is not beneficial for wound healing. Choice D, administering stool softeners, may be necessary to prevent constipation and straining, but it is not the priority intervention at this time.
4. A client at 20 weeks of gestation is being taught by a nurse about an alpha-fetoprotein (AFP) test. Which of the following information should the nurse include?
- A. This test is used to confirm pregnancy
- B. This test is used to detect neural tube defects
- C. This test will determine the baby's lung maturity
- D. This test will check for gestational diabetes
Correct answer: B
Rationale: The correct answer is B: 'This test is used to detect neural tube defects.' An alpha-fetoprotein test is essential for screening neural tube defects in the fetus, not for confirming pregnancy, determining lung maturity, or checking for gestational diabetes. Detecting neural tube defects is crucial for early intervention and management of potential health issues in the baby.
5. A caregiver is learning about newborn safety. Which of the following statements by a parent indicates an understanding of the teaching?
- A. I will dress my baby in flame-retardant clothing.
- B. I will ensure a bib on my baby at night to keep her clothing dry.
- C. I will warm my baby's formula using the lowest setting in the microwave.
- D. I will cover the crib mattress with plastic to prevent staining.
Correct answer: A
Rationale: The correct answer is A. Dressing a baby in flame-retardant clothing is crucial to prevent injuries, especially in case of accidental exposure to fire sources. This safety measure can provide an added layer of protection for the newborn. The other options do not directly address newborn safety concerns or best practices. Option B focuses on keeping clothing dry, which is not a primary safety concern. Option C poses a risk of overheating the formula, which can be dangerous for the baby. Option D, covering the crib mattress with plastic, may pose a suffocation hazard to the baby.
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