ATI RN
Cardiovascular System Exam Questions And Answers
1. Which of the following is a central vasoconstrictor and peripheral vasodilator?
- A. Parasympathetic nervous system
- B. Sympathetic nervous system
- C. Dopamine
- D. Epinephrine
Correct answer: D
Rationale: The correct answer is D, Epinephrine. Epinephrine acts as a central vasoconstrictor and peripheral vasodilator. It increases heart rate and blood flow to muscles, helping to prepare the body for a 'fight or flight' response. Parasympathetic nervous system (choice A) does not cause vasoconstriction but rather vasodilation. The sympathetic nervous system (choice B) is primarily responsible for the fight or flight response, causing vasoconstriction. Dopamine (choice C) primarily acts as a neurotransmitter and hormone, not directly causing central vasoconstriction and peripheral vasodilation.
2. In patients receiving chemotherapy, which nutrient is often supplemented to manage mucositis?
- A. Vitamin E
- B. Vitamin B12
- C. Zinc
- D. Calcium
Correct answer: C
Rationale: Zinc supplementation is often recommended to manage mucositis in patients undergoing chemotherapy. Zinc plays a crucial role in wound healing and immune function, which can help alleviate the symptoms of mucositis. Vitamin E (Choice A) is known for its antioxidant properties but is not typically used to manage mucositis. Vitamin B12 (Choice B) is important for red blood cell production and nerve function but is not directly associated with mucositis management. Calcium (Choice D) is essential for bone health and muscle function but is not a primary nutrient supplemented to manage mucositis.
3. A nurse is preparing to administer ondansetron to a client. Which of the following therapeutic effects should the nurse expect from this medication?
- A. Decreased nausea
- B. Increased appetite
- C. Increased heart rate
- D. Relief of headache
Correct answer: A
Rationale: The correct answer is A: Decreased nausea. Ondansetron is classified as an antiemetic medication, which means it is used to relieve nausea and vomiting by blocking serotonin in the chemoreceptor trigger zone. Therefore, the nurse administering ondansetron should expect a therapeutic effect of decreased nausea. Choice B, increased appetite, is incorrect as ondansetron does not affect appetite. Choice C, increased heart rate, is incorrect as ondansetron does not have a direct effect on heart rate. Choice D, relief of headache, is also incorrect as the primary therapeutic effect of ondansetron is to alleviate nausea and vomiting, not headaches.
4. A patient has an ankle restraint applied. Upon assessment, the nurse finds the toes a light blue color. Which action will the nurse take next?
- A. Immediately do a complete head-to-toe neurological assessment.
- B. Take the patient's blood pressure, pulse, temperature, and respiratory rate.
- C. Place a blanket over the feet.
- D. Remove the restraint.
Correct answer: D
Rationale: The correct answer is to remove the restraint (Choice D). Cyanosis of the toes, indicated by a light blue color, suggests impaired circulation. The priority action is to ensure proper circulation by removing the restraint to prevent further compromise. Choices A and B are not the immediate actions needed for cyanosis related to impaired circulation. Choice C, placing a blanket over the feet, does not address the underlying issue of impaired circulation and could delay appropriate intervention.
5. A nurse delegates a position change to a nursing assistive personnel. The nurse instructs the assistive personnel (AP) to place the patient in the lateral position. Which finding by the nurse indicates a correct outcome?
- A. Patient is lying semiprone.
- B. Patient is lying on side.
- C. Patient is lying on abdomen.
- D. Patient is lying on back.
Correct answer: B
Rationale: The correct answer is B because the lateral position means lying on the side with body weight on the dependent hip and shoulder. Choice A is incorrect as 'semiprone' means lying on the abdomen with one leg flexed. Choice C is incorrect as 'prone' means lying face down. Choice D is incorrect as 'supine' means lying on the back.
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