ATI RN
Cardiovascular System Exam Questions Pdf Questions
Question 1 of 5
What test measures the electrical activity of the heart over a 24- or 48-hour period?
Correct Answer: A
Rationale: The correct answer is A: Holter monitor. This device records the electrical activity of the heart over an extended period, typically 24-48 hours, providing a more comprehensive assessment compared to a standard ECG (choice B). A stress test (choice C) evaluates the heart's response to physical exertion, not prolonged monitoring. A chest X-ray (choice D) is used to visualize the heart and lungs, but does not measure electrical activity. Therefore, the Holter monitor is the most appropriate test for continuous monitoring of heart activity over an extended period.
Question 2 of 5
What is a condition where the walls of the arteries become thickened and stiff, often due to the buildup of plaque, leading to reduced blood flow?
Correct Answer: A
Rationale: Atherosclerosis is the correct answer because it specifically refers to the condition where artery walls become thickened and stiff due to plaque buildup. Plaque accumulation narrows the arteries, reducing blood flow and potentially leading to serious complications. Angina (B) is chest pain caused by reduced blood flow to the heart but is not a direct result of arterial thickening. Hypertension (C) is high blood pressure and does not involve artery wall thickening. Arrhythmia (D) is an irregular heart rhythm and is not related to arterial stiffness. Thus, Atherosclerosis (A) best fits the description provided in the question.
Question 3 of 5
This medication type is used to relax and widen blood vessels, improving blood flow and reducing blood pressure.
Correct Answer: A
Rationale: The correct answer is A: Vasodilator. Vasodilators relax and widen blood vessels, leading to improved blood flow and decreased blood pressure. They work directly on the muscles in the walls of blood vessels. Anticoagulants (B) prevent blood clot formation, diuretics (C) increase urine production to reduce fluid buildup, and beta-blockers (D) reduce heart rate and blood pressure by blocking the effects of adrenaline. Therefore, only vasodilators directly target blood vessel relaxation and widening to improve blood flow and reduce blood pressure.
Question 4 of 5
Which type of medication is used to reduce the workload on the heart by slowing down the heart rate and lowering blood pressure?
Correct Answer: A
Rationale: The correct answer is A: Beta-blocker. Beta-blockers reduce the workload on the heart by blocking the action of adrenaline on beta receptors, slowing down heart rate and lowering blood pressure. This helps to decrease the heart's oxygen demand and improve its efficiency. ACE inhibitors (B) work by dilating blood vessels, Calcium channel blockers (C) block calcium entry into cells to relax blood vessels, and Diuretics (D) reduce blood volume by increasing urine output, but they do not specifically target reducing the workload on the heart.
Question 5 of 5
This is a procedure where a small mesh tube is inserted into an artery to keep it open and improve blood flow.
Correct Answer: A
Rationale: The correct answer is A: Stent placement. Stent placement involves inserting a mesh tube into an artery to keep it open and improve blood flow. This procedure is minimally invasive compared to bypass surgery (C) and CABG (D), which involve rerouting blood flow. Angioplasty (B) is related but specifically refers to widening the artery using a balloon catheter, not inserting a mesh tube like in stent placement. Therefore, A is the best choice for the given procedure.