ATI RN
Cardiovascular System Exam Questions Pdf
1. Which valve prevents backflow of blood into the left ventricle from the aorta?
- A. Aortic valve
- B. Mitral valve
- C. Tricuspid valve
- D. Pulmonary valve
Correct answer: A
Rationale: The correct answer is Aortic valve. The aortic valve is positioned between the left ventricle and the aorta. It prevents blood from flowing back into the left ventricle after it has been pumped into the aorta. The mitral valve (Choice B) is located between the left atrium and the left ventricle, the tricuspid valve (Choice C) is between the right atrium and right ventricle, and the pulmonary valve (Choice D) is situated between the right ventricle and the pulmonary artery. Therefore, they are not responsible for preventing backflow from the aorta into the left ventricle.
2. A client with a new diagnosis of hypertension is receiving discharge teaching. Which statement by the client indicates an understanding of the teaching?
- A. I will take my medication only when I feel dizzy.
- B. I will check my blood pressure at least once a week.
- C. I will limit my saturated fat intake to 7% of daily calories.
- D. I will take my medication only when I have symptoms.
Correct answer: C
Rationale: The correct answer is C because limiting saturated fat intake to 7% of daily calories is a crucial component of the dietary management for hypertension. This dietary modification helps reduce the risk of cardiovascular complications. Choices A, B, and D are incorrect. Choice A is incorrect because medication adherence should not be based on symptoms like dizziness. Choice B is inadequate as blood pressure monitoring should be more frequent, preferably daily, for effective management of hypertension. Choice D is incorrect because medication for hypertension should be taken consistently as prescribed, not just when symptoms occur.
3. A client with heart failure is prescribed digoxin. Which of the following findings should the nurse identify as an adverse effect of digoxin?
- A. Constipation
- B. Blurred vision
- C. Nausea
- D. Headache
Correct answer: B
Rationale: Blurred vision is a common adverse effect of digoxin and can indicate toxicity. Monitoring for visual changes is essential to prevent serious complications in clients taking digoxin.
4. To follow a healthy diet, a person should be sure that:
- A. 20-35% of the total carbs eaten should be made up of fiber
- B. 45-65% of the total carbs eaten should be made up of fiber
- C. 45-65% of the total fiber eaten should be made up of soluble fiber
- D. 45-65% of the total calories eaten should be made up of carbs
Correct answer: D
Rationale: The Acceptable Macronutrient Distribution Range (AMDR) suggests that 45-65% of total daily calories should come from carbohydrates.
5. During a focused assessment for a client with dysrhythmias, what indicates ineffective cardiac contractions?
- A. Increased heart rate
- B. Pulse deficit
- C. Elevated blood pressure
- D. Bounding pulse
Correct answer: B
Rationale: A pulse deficit is a crucial finding in clients with dysrhythmias as it indicates ineffective cardiac contractions. A pulse deficit occurs when the apical heart rate is faster than the radial pulse rate, suggesting that some heartbeats are not generating a pulse. This can be a sign of serious heart conditions like atrial fibrillation or heart failure. The other options, such as an increased heart rate (choice A), elevated blood pressure (choice C), and bounding pulse (choice D), do not specifically indicate ineffective cardiac contractions and are not directly associated with dysrhythmias.
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