ATI RN
Cardiovascular System Practice Exam
1. Which of the following is a rare but serious condition where the pulmonary arteries become narrowed, increasing the blood pressure in the lungs?
- A. Pulmonary hypertension
- B. Pulmonary embolism
- C. Pulmonary fibrosis
- D. Aortic stenosis
Correct answer: A
Rationale: The correct answer is A, Pulmonary hypertension. Pulmonary hypertension is a rare but serious condition characterized by high blood pressure in the arteries of the lungs, which can lead to heart failure. Pulmonary embolism (choice B) involves a blockage in one of the pulmonary arteries in the lungs. Pulmonary fibrosis (choice C) is a lung disease that causes lung tissue scarring. Aortic stenosis (choice D) is a condition where the aortic valve narrows, affecting blood flow from the heart.
2. The client on nitroglycerin complains of a headache. How does the nurse explain this?
- A. This is a normal side effect of nitroglycerin.
- B. This is an allergic reaction to nitroglycerin.
- C. This is an indication of overdose.
- D. This is a sign of heart failure.
Correct answer: A
Rationale: The correct answer is A: 'This is a normal side effect of nitroglycerin.' Headaches are a common side effect of nitroglycerin due to vasodilation. Choice B is incorrect because allergic reactions to nitroglycerin typically present with symptoms like rash, itching, or shortness of breath. Choice C is incorrect as an overdose of nitroglycerin would likely present with symptoms beyond just a headache. Choice D is incorrect because headaches related to nitroglycerin are not indicative of heart failure.
3. This medication type is used to relax and widen blood vessels, improving blood flow and reducing blood pressure.
- A. Vasodilator
- B. Anticoagulant
- C. Diuretic
- D. Beta-blocker
Correct answer: A
Rationale: The correct answer is A: Vasodilator. Vasodilators are medications that work by relaxing and widening blood vessels, which improves blood flow and reduces blood pressure. They are commonly used in the treatment of heart conditions. Anticoagulants (choice B) are medications that prevent blood clot formation, diuretics (choice C) increase urine production to reduce fluid retention, and beta-blockers (choice D) reduce heart rate and workload on the heart. These mechanisms differ from the action of vasodilators.
4. The client on warfarin has an INR of 3.8. What is the most appropriate action by the nurse?
- A. Administer vitamin K.
- B. Hold the next dose of warfarin.
- C. Increase the dose of warfarin.
- D. Notify the healthcare provider immediately.
Correct answer: A
Rationale: An INR of 3.8 is elevated, indicating an increased risk of bleeding. Administering vitamin K can help reverse the effects of warfarin. Holding the next dose of warfarin would be appropriate if the INR was too high, but not as the first-line action. Increasing the dose of warfarin would worsen the situation by further increasing the INR. Notifying the healthcare provider is important, but immediate action to address the elevated INR is necessary.
5. What is a chronic condition where the airways in the lungs become damaged and widened, leading to mucus buildup and frequent infections?
- A. Bronchiectasis
- B. Chronic bronchitis
- C. Pneumoconiosis
- D. Asthma
Correct answer: A
Rationale: Bronchiectasis is a chronic condition characterized by the damage and widening of the airways in the lungs, resulting in mucus accumulation and recurrent lung infections. Choice B, chronic bronchitis, involves inflammation of the bronchial tubes and excessive mucus production but does not specifically mention airway damage and widening. Choice C, pneumoconiosis, refers to lung diseases caused by inhalation of mineral dust particles, not airway damage and mucus buildup. Choice D, asthma, is a chronic condition characterized by airway inflammation and narrowing, leading to breathing difficulties, but it does not involve the widening and damage of the airways as seen in bronchiectasis.
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