ATI RN
Cardiovascular System Exam
1. What condition is characterized by narrowed or blocked arteries in the legs or arms, leading to pain and mobility issues?
- A. Peripheral artery disease
- B. Atherosclerosis
- C. Raynaud's disease
- D. Varicose veins
Correct answer: A
Rationale: The correct answer is A: Peripheral artery disease (PAD). PAD is a condition where the arteries in the legs or arms become narrowed or blocked, leading to pain and mobility issues. Choice B, Atherosclerosis, refers to the buildup of fats, cholesterol, and other substances in and on the artery walls, not specifically the narrowing or blockage in the extremities. Choice C, Raynaud's disease, is characterized by reduced blood flow to the extremities, leading to coldness, numbness, and color changes in the skin, but it is not primarily about narrowed or blocked arteries. Choice D, Varicose veins, involves enlarged, twisted veins usually in the legs, but it is not related to narrowed or blocked arteries causing pain and mobility issues.
2. What is the condition where the blood flow through the coronary arteries is reduced or blocked, leading to chest pain or heart attack?
- A. Coronary artery disease
- B. Atherosclerosis
- C. Pulmonary embolism
- D. Pulmonary hypertension
Correct answer: A
Rationale: The correct answer is A, Coronary artery disease (CAD). CAD occurs when the coronary arteries are narrowed or blocked, reducing blood flow to the heart muscle and increasing the risk of chest pain or heart attack. Choice B, Atherosclerosis, is a condition characterized by the hardening and narrowing of arteries due to the buildup of plaque. Choices C and D, Pulmonary embolism and Pulmonary hypertension, involve issues related to the lungs and not the coronary arteries.
3. What is the approximate stroke volume of the heart?
- A. Approximately 60 mL of blood per beat
- B. Approximately 70 mL of blood per beat
- C. Approximately 80 mL of blood per beat
- D. Approximately 90 mL of blood per beat
Correct answer: B
Rationale: The correct answer is B: Approximately 70 mL of blood per beat. The stroke volume of the heart is typically around 70 mL, indicating the volume of blood ejected from the left ventricle with each contraction. Choices A, C, and D are incorrect as they do not represent the standard approximate stroke volume of the heart, which is around 70 mL per beat.
4. The nurse is caring for a client with atrial fibrillation on dabigatran (Pradaxa). What is the most important instruction to give to the client?
- A. Take the medication with food to prevent stomach upset.
- B. Do not miss a dose and take it at the same time each day.
- C. Avoid consuming alcohol while on this medication.
- D. Monitor for signs of bleeding.
Correct answer: B
Rationale: The most important instruction to give to a client on dabigatran (Pradaxa) is not to miss a dose and take it at the same time each day. This is crucial for maintaining the anticoagulant effect of the medication. Choice A is not necessary as dabigatran does not need to be taken with food. Choice C is important but not as crucial as ensuring proper dosing. Choice D is also important but falls behind in priority compared to maintaining consistent dosing.
5. What is a surgical procedure where a blood vessel is grafted to bypass a blocked coronary artery, improving blood flow to the heart muscle?
- A. Coronary artery bypass graft (CABG)
- B. Valve replacement
- C. Angioplasty
- D. Endarterectomy
Correct answer: A
Rationale: The correct answer is A: Coronary artery bypass graft (CABG). CABG involves grafting a blood vessel to bypass a blocked coronary artery, enhancing blood flow to the heart muscle. This procedure helps reduce the risk of heart attack by restoring proper blood circulation to the heart. Choice B, valve replacement, is a different surgical procedure that involves replacing damaged or dysfunctional heart valves. Choice C, angioplasty, is a minimally invasive procedure that uses a balloon to open narrowed or blocked blood vessels. Choice D, endarterectomy, is the surgical removal of plaque from the lining of an artery to improve blood flow.
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