this is a condition where the arteries supplying blood to the legs and feet become narrowed or blocked causing pain and difficulty walking
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ATI RN

Physical Exam Cardiovascular System

1. What is a condition where the arteries supplying blood to the legs and feet become narrowed or blocked, causing pain and difficulty walking?

Correct answer: A

Rationale: The correct answer is A, Peripheral artery disease (PAD). PAD is characterized by the narrowing or blockage of arteries that supply blood to the legs and feet, resulting in pain and difficulty walking. Choice B, Atherosclerosis, is a condition involving the buildup of plaque in the arteries but is not specific to the legs and feet. Varicose veins (Choice C) refer to enlarged, twisted veins usually occurring in the legs. Raynaud's disease (Choice D) involves episodes of reduced blood flow to the extremities, typically triggered by cold temperatures or stress, but it is not directly related to the arteries in the legs and feet.

2. What type of heart disease is characterized by the heart muscle becoming enlarged and weakened, reducing its ability to pump blood effectively?

Correct answer: A

Rationale: The correct answer is A: Dilated cardiomyopathy. Dilated cardiomyopathy is a type of heart disease where the heart muscle becomes enlarged and weakened, reducing its ability to pump blood effectively, which can lead to heart failure. Hypertrophic cardiomyopathy (B) is characterized by abnormal thickening of the heart muscle, not enlargement. Restrictive cardiomyopathy (C) involves the heart muscle becoming stiff and less flexible, limiting its ability to fill with blood properly. Myocarditis (D) is inflammation of the heart muscle, which can affect the heart's function but is different from dilated cardiomyopathy.

3. This test measures the amount of blood the heart pumps with each beat, often used to assess heart function.

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.

4. Which procedure is used to restore a normal heart rhythm in patients with arrhythmias, typically using electrical shocks?

Correct answer: A

Rationale: The correct answer is A: Cardioversion. Cardioversion is the procedure used to restore a normal heart rhythm in patients with arrhythmias by delivering controlled electrical shocks to the heart. Choice B, Defibrillation, is incorrect because defibrillation is used to treat life-threatening arrhythmias by delivering an unsynchronized high-energy shock to the heart. Choice C, Ablation, is incorrect as it involves destroying abnormal tissue that causes arrhythmias, not necessarily restoring normal heart rhythm. Choice D, Angioplasty, is unrelated to heart rhythm restoration and is a procedure to open blocked or narrowed blood vessels.

5. What is the amount of blood the heart pumps through the circulatory system in a minute?

Correct answer: A

Rationale: The correct answer is A: Cardiac output. Cardiac output is the volume of blood pumped by the heart per minute. It is calculated by multiplying the stroke volume (the amount of blood pumped out of the heart in each beat) by the heart rate (number of heartbeats per minute). This question specifically asks for the total amount of blood pumped through the circulatory system in a minute, which is represented by cardiac output. Choices B, C, and D are incorrect because stroke volume refers to the amount of blood pumped out of the heart in each beat, end-diastolic volume is the volume of blood in the heart at the end of diastole, and ejection fraction is the percentage of blood pumped out of the heart with each contraction, not the total amount pumped per minute.

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