Cardiovascular System Practice Exam

Correct Answer: A

Rationale: The correct answer is to monitor heart rate and rhythm when a client is receiving intravenous dopamine. Dopamine is known to potentially cause arrhythmias, making this assessment crucial. While monitoring blood pressure, respiratory rate, and oxygen saturation are important nursing assessments, they are not the most critical when dopamine is being administered.

Correct Answer: A

Rationale: The correct answer is A, myocardial infarction. A myocardial infarction, commonly known as a heart attack, occurs when the blood supply to part of the heart muscle is blocked, often by a blood clot. Choices B, C, and D are incorrect because arrhythmia refers to an irregular heartbeat, stroke involves the interruption of blood flow to the brain, and an aneurysm is a bulge in a blood vessel.

Correct Answer: A

Rationale: The correct answer is Legionnaires' disease. Legionnaires' disease is a severe form of pneumonia caused by inhaling water droplets contaminated with Legionella bacteria. This bacterium thrives in water systems such as air conditioning units, hot tubs, and water fountains. Choices B, C, and D are incorrect because Tuberculosis is caused by Mycobacterium tuberculosis, Asbestosis is caused by asbestos fibers, and Histoplasmosis is caused by a fungus found in bird and bat droppings.

Correct Answer: A

Rationale: Cardiomyopathy is the correct answer. It is a condition characterized by the enlargement, thickening, or stiffening of the heart muscle, leading to a reduced ability of the heart to pump blood effectively. Endocarditis (Choice B) is the inflammation of the inner lining of the heart chambers and valves, not specifically related to the heart muscle. Myocarditis (Choice C) is inflammation of the heart muscle typically caused by a viral infection, not directly related to the heart muscle's structure. Aortic stenosis (Choice D) is a condition characterized by the narrowing of the aortic valve opening, affecting blood flow from the heart's left ventricle to the aorta, different from the structural changes seen in cardiomyopathy.

Correct Answer: A

Rationale: Emphysema is the correct answer as it is a chronic lung disease characterized by the gradual destruction of the alveoli, which are essential for oxygen exchange. This destruction leads to difficulty breathing and reduced oxygen levels in the blood. Bronchitis is an inflammation of the bronchial tubes, not specifically involving alveoli destruction. Pulmonary hypertension is a condition of high blood pressure in the arteries of the lungs, not directly related to alveoli destruction. Sarcoidosis is a disease characterized by the growth of tiny collections of inflammatory cells in different parts of the body, including the lungs, but it does not primarily involve the destruction of alveoli.