ATI RN
Cardiovascular System Practice Exam
1. This test measures the amount of blood the heart pumps with each beat, often used to assess heart function.
- A. Ejection fraction
- B. Cardiac output
- C. Stroke volume
- D. End-diastolic volume
Correct answer: A
Rationale: The correct answer is A: Ejection fraction. Ejection fraction is a measure of the percentage of blood that is pumped out of the left ventricle with each beat, used to assess heart function. Choice B, Cardiac output, is the total volume of blood pumped by the heart per minute and is not specific to each beat. Choice C, Stroke volume, is the amount of blood ejected by the heart in one contraction but does not specify the percentage of blood pumped out. Choice D, End-diastolic volume, is the volume of blood in the ventricle just before it contracts and does not directly measure the blood pumped with each beat.
2. What is a condition characterized by an abnormal buildup of fluid between the layers of tissue lining the lungs and chest cavity?
- A. Pleural effusion
- B. Pulmonary edema
- C. Atelectasis
- D. Sarcoidosis
Correct answer: A
Rationale: Pleural effusion is the correct answer as it refers to the accumulation of excess fluid between the layers of the pleura surrounding the lungs and chest cavity. This condition can be caused by various factors such as infections, heart failure, or cancer. Pulmonary edema (choice B) involves fluid accumulation in the lungs' air sacs and is not specific to the pleura. Atelectasis (choice C) is the collapse or closure of a lung leading to airless lung tissue and is not related to fluid buildup. Sarcoidosis (choice D) is a condition characterized by the growth of tiny collections of inflammatory cells in different parts of the body, not specifically involving fluid accumulation in the pleural space.
3. This is a procedure where a small mesh tube is inserted into an artery to keep it open and improve blood flow.
- A. Stent placement
- B. Angioplasty
- C. Bypass surgery
- D. Coronary artery bypass graft (CABG)
Correct answer: A
Rationale: Stent placement is a procedure where a small mesh tube (stent) is inserted into an artery to keep it open and improve blood flow, often following angioplasty.
4. What is a type of medication that helps to prevent blood clots by thinning the blood?
- A. Anticoagulant
- B. Beta-blocker
- C. ACE inhibitor
- D. Calcium channel blocker
Correct answer: A
Rationale: Anticoagulants are medications specifically designed to prevent blood clots by thinning the blood. They work by interfering with the body's blood clotting process. Beta-blockers, ACE inhibitors, and calcium channel blockers are medications used for different purposes such as managing blood pressure, heart conditions, and regulating heart rhythm, respectively. However, they do not have the primary function of preventing blood clots like anticoagulants.
5. Which condition is characterized by the narrowing or blockage of arteries that supply blood to the heart by plaque?
- A. Coronary artery disease (CAD)
- B. Atherosclerosis
- C. Peripheral artery disease
- D. Congestive heart failure
Correct answer: A
Rationale: The correct answer is A, Coronary artery disease (CAD). CAD specifically refers to the condition where the arteries supplying blood to the heart become narrowed or blocked by plaque buildup. Choice B, Atherosclerosis, is a general term for the hardening and narrowing of arteries due to plaque buildup but does not specifically mention the heart. Choice C, Peripheral artery disease, involves narrowing of arteries that supply blood to areas other than the heart. Choice D, Congestive heart failure, is a condition where the heart is unable to pump blood effectively but is not primarily caused by narrowed or blocked arteries.
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