Nursing Elites

1. What type of medication is used to reduce high blood pressure by relaxing the blood vessels?

• A. Calcium channel blocker
• B. Beta-blocker
• C. ACE inhibitor
• D. Diuretic

Correct answer: A

Rationale: Calcium channel blockers are medications that reduce high blood pressure by relaxing the blood vessels, facilitating easier blood flow through the vessels. Beta-blockers work by reducing the heart rate and the heart's workload. ACE inhibitors help relax blood vessels by blocking the production of a chemical that narrows blood vessels. Diuretics help the body get rid of excess sodium and water to lower blood pressure, but they do not directly relax blood vessels like calcium channel blockers do.

2. What is an infection that causes inflammation in the air sacs of one or both lungs, which may fill with fluid or pus?

• A. Pneumonia
• B. Tuberculosis
• C. Pleurisy
• D. Pulmonary edema

Correct answer: A

Rationale: The correct answer is A, Pneumonia. Pneumonia is an infection that inflames the air sacs in one or both lungs, which may fill with fluid or pus, causing symptoms like cough, fever, chills, and difficulty breathing. Tuberculosis (B) is a bacterial infection that primarily affects the lungs but is caused by a different bacterium. Pleurisy (C) is inflammation of the tissues that line the lungs and chest cavity, not the air sacs. Pulmonary edema (D) is a condition where fluid accumulates in the lungs' air sacs but is often due to heart problems rather than an infection.

3. Which of the following is a central vasodilator and peripheral vasoconstrictor?

• A. Sympathetic nervous system
• B. Parasympathetic nervous system
• C. Norepinephrine
• D. Acetylcholine

Correct answer: A

Rationale: The correct answer is the Sympathetic nervous system. The sympathetic nervous system is a branch of the autonomic nervous system that is responsible for the fight-or-flight response. It causes vasodilation in central vessels to increase blood flow to vital organs during stress or exercise, while inducing vasoconstriction in peripheral vessels to redirect blood to essential areas. Norepinephrine and acetylcholine are neurotransmitters associated with the sympathetic and parasympathetic nervous systems, respectively, but they are not themselves central vasodilators and peripheral vasoconstrictors.

4. What is a condition where the arteries that supply blood to the heart muscle become hardened and narrowed due to the buildup of plaque?

• A. Atherosclerosis
• B. Aneurysm
• C. Arrhythmia
• D. Peripheral artery disease

Correct answer: A

Rationale: Atherosclerosis is the correct answer. It is a condition characterized by the hardening and narrowing of arteries supplying blood to the heart due to plaque buildup. This condition increases the risk of heart attacks. Choice B, aneurysm, refers to a balloon-like bulge in an artery, not the hardening and narrowing of arteries. Choice C, arrhythmia, is an irregular heartbeat and not related to arterial hardening. Choice D, peripheral artery disease, involves the narrowing of arteries that supply blood to the limbs, not specifically to the heart.

5. What test evaluates the heart's response to physical stress, often involving exercise on a treadmill while monitoring the heart?

• A. Stress test
• B. Echocardiogram
• C. Holter monitor
• D. CT angiography

Correct answer: A

Rationale: A stress test, also known as an exercise stress test, evaluates the heart's response to physical stress by monitoring its activity during exercise, typically on a treadmill. This test helps assess the heart's performance, detect coronary artery disease, and evaluate the effectiveness of heart treatments. Echocardiogram (choice B) is an ultrasound of the heart that provides detailed images of the heart's structure and function, but it does not involve physical stress like a stress test. Holter monitor (choice C) is a device for continuously monitoring the heart's rhythm and rate over a period (usually 24-48 hours), not during exercise. CT angiography (choice D) is a diagnostic test that uses X-rays to visualize blood vessels but does not involve physical stress like a stress test.

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