Nursing Elites

1. What is the narrowing of the arteries due to the buildup of plaque, which can lead to heart attacks and strokes?

• A. Coronary artery disease
• B. Peripheral artery disease
• C. Aortic stenosis
• D. Mitral valve prolapse

Correct answer: A

Rationale: Coronary artery disease is the correct answer. It is the narrowing or blockage of the coronary arteries due to plaque buildup, which can lead to heart attacks and other cardiovascular issues. Choice B, Peripheral artery disease, involves the narrowing of arteries in the limbs, not specifically the coronary arteries. Choice C, Aortic stenosis, refers to the narrowing of the aortic valve opening, not the arteries. Choice D, Mitral valve prolapse, is a condition where the valve between the left atrium and left ventricle doesn't close properly, unrelated to arterial narrowing.

2. What is a type of heart disease that involves the thickening or stiffening of the heart muscle, reducing its ability to pump blood?

• A. Hypertrophic cardiomyopathy
• B. Dilated cardiomyopathy
• C. Restrictive cardiomyopathy
• D. Arrhythmia

Correct answer: A

Rationale: Hypertrophic cardiomyopathy is a type of heart disease characterized by the thickening or stiffening of the heart muscle, leading to a reduced ability to pump blood. This condition is different from dilated cardiomyopathy (choice B), which involves the enlargement and weakening of the heart chambers. Restrictive cardiomyopathy (choice C) is characterized by the stiffening of the heart muscle, affecting its ability to fill with blood properly. Arrhythmia (choice D) refers to abnormal heart rhythms and is not specifically related to thickening or stiffening of the heart muscle, as seen in hypertrophic cardiomyopathy.

3. 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.

4. What is the ability of cardiac cells to respond to an impulse by contracting?

• A. Excitability
• B. Contractility
• C. Rhythmicity
• D. Conductivity

Correct answer: A

Rationale: Excitability is the correct term that describes the ability of cardiac cells to respond to an impulse by contracting. Excitability refers to the cell's ability to respond to stimuli and generate an action potential. Choice B, Contractility, is incorrect as it refers to the ability of cardiac cells to contract after receiving a stimulus, not the response to the impulse itself. Choice C, Rhythmicity, is incorrect as it pertains to the heart's ability to contract rhythmically without external stimulation. Choice D, Conductivity, is incorrect as it refers to the ability of cardiac cells to transmit an impulse from cell to cell, not the direct response to the impulse by contracting.

5. Which of the following is a chronic respiratory disease characterized by the irreversible obstruction of airflow?

• A. Chronic obstructive pulmonary disease (COPD)
• B. Asthma
• C. Pulmonary edema
• D. Bronchiectasis

Correct answer: A

Rationale: The correct answer is A, Chronic obstructive pulmonary disease (COPD). COPD is a chronic respiratory disease where the airflow in the lungs becomes obstructed, making it difficult to breathe. Choice B, Asthma, is a different chronic respiratory condition characterized by reversible airflow obstruction and airway hyperresponsiveness. Choice C, Pulmonary edema, is a condition where fluid accumulates in the lungs, leading to difficulty in breathing but not irreversible airflow obstruction. Choice D, Bronchiectasis, is a condition characterized by abnormal widening of the bronchial tubes, leading to recurrent respiratory infections, but it is not specifically defined by irreversible airflow obstruction.

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