Nursing Elites

1. Which surgical procedure involves grafting a blood vessel to bypass a blocked artery in the heart?

• A. Coronary artery bypass graft (CABG)
• B. Valve replacement
• C. Stent placement
• D. Angioplasty

Correct answer: A

Rationale: The correct answer is A, Coronary artery bypass graft (CABG). This surgical procedure involves grafting a blood vessel to bypass a blocked coronary artery, improving blood flow to the heart muscle. Choice B, Valve replacement, is a procedure to replace a damaged heart valve and is not directly related to bypassing blocked arteries. Choice C, Stent placement, involves inserting a mesh tube to keep blocked arteries open and is different from grafting a blood vessel. Choice D, Angioplasty, is a procedure to widen narrowed or blocked arteries, typically using a balloon catheter, and does not involve grafting a blood vessel.

2. Which condition is characterized by the weakening and rupture of the walls of the alveoli in the lungs, reducing the surface area available for gas exchange?

• A. Emphysema
• B. Bronchitis
• C. Atelectasis
• D. Pulmonary fibrosis

Correct answer: A

Rationale: The correct answer is A, Emphysema. Emphysema is a lung condition where the walls of the alveoli become weak and rupture, reducing the surface area available for gas exchange. This leads to shortness of breath. Choice B, Bronchitis, is characterized by inflammation of the bronchial tubes, not the alveoli. Choice C, Atelectasis, involves the collapse of a part or entire lung, not the weakening and rupture of alveolar walls. Choice D, Pulmonary fibrosis, is a condition where lung tissue becomes thickened and stiff, not involving the weakening and rupture of alveoli walls.

3. Which neurotransmitter released by the parasympathetic nervous system can decrease heart rate?

• A. Acetylcholine
• B. Norepinephrine
• C. Dopamine
• D. Serotonin

Correct answer: A

Rationale: Acetylcholine is the correct answer. It is a neurotransmitter released by the parasympathetic nervous system that can decrease heart rate. Norepinephrine, dopamine, and serotonin are neurotransmitters that usually have different effects on the body and are not specifically associated with decreasing heart rate. Norepinephrine, for example, is often related to the fight-or-flight response and can increase heart rate.

4. What is the condition where the pericardium, the sac surrounding the heart, becomes inflamed, leading to chest pain and other symptoms?

• A. Pericarditis
• B. Myocarditis
• C. Endocarditis
• D. Pulmonary hypertension

Correct answer: A

Rationale: Pericarditis is the correct answer. It is the inflammation of the pericardium, the sac surrounding the heart, which can lead to chest pain and other symptoms. Myocarditis (choice B) is inflammation of the heart muscle, not the pericardium. Endocarditis (choice C) is inflammation of the inner lining of the heart chambers and valves, not the pericardium. Pulmonary hypertension (choice D) is high blood pressure in the arteries of the lungs, not related to pericardial inflammation.

5. What procedure uses a catheter to open up a blocked or narrowed coronary artery, often involving the placement of a stent?

• A. Angioplasty
• B. Echocardiogram
• C. CT angiography
• D. Coronary artery bypass graft (CABG)

Correct answer: A

Rationale: The correct answer is Angioplasty. Angioplasty is a procedure that uses a catheter to open up a blocked or narrowed coronary artery, often involving the placement of a stent. Echocardiogram is a diagnostic test that uses sound waves to create images of the heart. CT angiography is a type of imaging test that looks at blood vessels, but it does not involve the placement of a stent. Coronary artery bypass graft (CABG) is a surgical procedure to improve blood flow to the heart muscle by bypassing blocked coronary arteries.

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