ATI RN
Cardiovascular System Exam Questions And Answers
1. After the AV node, the electrical impulse is then transmitted into the _________, and into the _________.
- A. Purkinje fibers, ventricles
- B. Atria, ventricles
- C. Bundle of His, Purkinje fibers
- D. Ventricles, Purkinje fibers
Correct answer: C
Rationale: The correct answer is C. After the AV node, the electrical impulse is transmitted to the Bundle of His and then to the Purkinje fibers. This sequence is crucial for the coordinated contraction of the ventricles. Choice A (Purkinje fibers, ventricles) is incorrect because the Purkinje fibers come after the Bundle of His in the sequence of electrical conduction. Choice B (Atria, ventricles) is incorrect because the impulse does not go back to the atria after passing through the AV node. Choice D (Ventricles, Purkinje fibers) is incorrect because the impulse first reaches the Bundle of His before spreading to the Purkinje fibers.
2. What is the best way to manage a patient with suspected deep vein thrombosis (DVT)?
- A. Administer anticoagulants
- B. Apply compression stockings
- C. Encourage ambulation
- D. Monitor oxygen saturation
Correct answer: A
Rationale: The correct answer is A: Administer anticoagulants. Administering anticoagulants is crucial in managing patients with suspected DVT as it helps prevent further clot formation and reduces the risk of complications like pulmonary embolism. Choice B, applying compression stockings, is more focused on preventing DVT in high-risk patients rather than managing an established case. Encouraging ambulation, choice C, is beneficial in the prevention of DVT but is not the primary management for suspected cases. Monitoring oxygen saturation, choice D, is important in overall patient care but is not the primary intervention for suspected DVT.
3. A nurse is caring for a newborn who has neonatal abstinence syndrome. Which of the following actions should the nurse take?
- A. Swaddle the newborn tightly
- B. Provide frequent tactile stimulation
- C. Position the newborn in a prone position
- D. Offer large feedings every 4 hours
Correct answer: A
Rationale: The correct action for the nurse to take when caring for a newborn with neonatal abstinence syndrome is to swaddle the newborn tightly. Swaddling helps to provide comfort and reduce irritability in these newborns. Choice B, providing frequent tactile stimulation, may exacerbate the symptoms of neonatal abstinence syndrome by overstimulating the newborn. Choice C, positioning the newborn in a prone position, is not recommended as it increases the risk of sudden infant death syndrome (SIDS). Choice D, offering large feedings every 4 hours, is not appropriate as newborns with neonatal abstinence syndrome may have feeding difficulties and need smaller, more frequent feedings.
4. A client is being taught by a healthcare professional about preventing Otitis Externa. Which of the following instructions should the healthcare professional include?
- A. Clean the ear with a cotton-tipped swab daily
- B. Place earplugs in the ears when sleeping at night
- C. Use a cool water irrigation solution to remove earwax
- D. Tip the head to the side to remove water from the ears after showering
Correct answer: D
Rationale: To prevent Otitis Externa, it is important to remove water from the ears after showering or swimming. This helps reduce the risk of moisture buildup in the ear canal, which can lead to infection. Cleaning the ear with a cotton-tipped swab daily can actually increase the risk of injury or infection. Placing earplugs in the ears when sleeping at night may trap moisture and promote bacterial growth. Using a cool water irrigation solution to remove earwax is not recommended as it can disrupt the natural balance of the ear canal.
5. While assessing the IV infusion site of a client experiencing pain, redness, and warmth, what should the nurse do?
- A. Increase the IV flow rate
- B. Discontinue the infusion
- C. Elevate the limb
- D. Apply a cold compress
Correct answer: B
Rationale: The correct answer is to discontinue the infusion. Pain, redness, and warmth at the IV site are signs of phlebitis, which is inflammation of the vein. Continuing the infusion can further irritate the vein and lead to complications. Increasing the IV flow rate would exacerbate the issue by delivering more irritants to the vein. Elevating the limb and applying a cold compress are not the appropriate interventions for phlebitis, as discontinuing the infusion is crucial to prevent further harm.
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