ATI RN
ATI Anatomy and Physiology Online Practice
1. In negative feedback mechanisms, changes away from the normal state
- A. stimulate changes in the same direction
- B. inhibit all body reactions
- C. stimulate changes in the opposite direction
- D. stimulate a reduction in all body requirements
Correct answer: stimulate changes in the opposite direction
Rationale: In negative feedback mechanisms, changes away from the normal state stimulate changes in the opposite direction. This is a fundamental concept in biological systems where the response to a stimulus opposes the initial change, helping to maintain homeostasis. Choice A is incorrect because negative feedback does not stimulate changes in the same direction. Choice B is incorrect because negative feedback does not inhibit all body reactions, but rather specific responses. Choice D is incorrect because negative feedback does not stimulate a reduction in all body requirements, but rather adjusts specific functions to restore balance.
2. A client is receiving discharge instructions for a new prescription of Enoxaparin. Which of the following instructions should the provider include?
- A. Inject the medication into the muscle.
- B. Massage the injection site after administration.
- C. Rotate injection sites between the arms and thighs.
- D. Administer the medication in the abdomen.
Correct answer: D
Rationale: The correct answer is to administer the medication in the abdomen. Enoxaparin is administered as a subcutaneous injection in the abdomen to prevent bleeding complications. Injecting into the muscle or massaging the site can increase the risk of bleeding. Rotating sites between the arms and thighs is not recommended for Enoxaparin administration due to variations in absorption rates. Therefore, the provider should instruct the client to administer Enoxaparin in the abdomen for optimal effectiveness and safety.
3. How would you best evaluate the clinical usefulness of a test?
- A. Decide on using a single test for all clients and families
- B. Consider what needs to be collected and discuss with colleagues
- C. Ask the family for a test suggestion
- D. Read the statistical methods used to validate the scores
Correct answer: B
Rationale: When evaluating the clinical usefulness of a test, the best approach is to consider what specific information needs to be collected based on the clients' needs. Discussing these considerations with colleagues helps in ensuring that the chosen test is appropriate and beneficial for the individuals being assessed. Choice A is incorrect as using a single test for all clients may not account for individual differences. Choice C is incorrect as the family's suggestion alone may not align with clinical needs. Choice D is incorrect as understanding statistical methods alone may not fully capture the clinical utility of a test.
4. The nurse needs to start an intravenous (IV) line on an 8-year-old child to begin administering intravenous antibiotics. The child starts to cry and tells the nurse, "Do it later, okay?" What action should the nurse take?
- A. Postpone starting the IV until the next shift.
- B. Start the IV line and then allow for expression of feelings.
- C. Change the route of the antibiotics to PO.
- D. Postpone starting the IV line until the child is ready.
Correct answer: B
Rationale: Starting the IV as planned while allowing the child to express feelings afterward helps build trust and ensures the timely administration of necessary antibiotics. Delaying the procedure or changing the route could compromise the child's treatment.
5. The client is prescribed warfarin. What should the client be taught about this medication?
- A. Avoid foods high in vitamin K.
- B. Take the medication with food to prevent stomach upset.
- C. Take the medication at the same time every day.
- D. Increase the dose if a dose is missed.
Correct answer: A
Rationale: The correct answer is A: Avoid foods high in vitamin K. Warfarin is an anticoagulant medication, and vitamin K can counteract its effects. Therefore, it is important for clients taking warfarin to avoid foods high in vitamin K to maintain the medication's effectiveness. Choice B is incorrect because warfarin should be taken consistently as prescribed, regardless of food intake. Choice C is incorrect because while consistency in timing is important, it is not specific to the effectiveness of warfarin. Choice D is incorrect because clients should never increase the dose of warfarin on their own, especially to make up for a missed dose, as it can lead to serious bleeding risks.
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