Nursing Elites

1. Which type of lung cancer begins in the cells lining the bronchi and bronchioles?

• A. Adenocarcinoma
• B. Small cell lung cancer
• C. Squamous cell carcinoma
• D. Mesothelioma

Correct answer: A

Rationale: Adenocarcinoma is the correct answer because it is a type of lung cancer that originates in the cells lining the bronchi and bronchioles. Adenocarcinoma is one of the most common types of lung cancer, often found in non-smokers and more frequently in women. Small cell lung cancer (Choice B) typically starts in the bronchi, but it is characterized by its rapid growth and tendency to spread quickly. Squamous cell carcinoma (Choice C) usually begins in the squamous cells lining the bronchi and is strongly associated with smoking. Mesothelioma (Choice D) is a cancer that affects the lining of certain organs like the lungs, often caused by asbestos exposure, but it does not specifically start in the cells lining the bronchi and bronchioles.

2. What is a chronic condition where the heart muscle becomes weakened and enlarged, reducing its ability to pump blood effectively?

• A. Dilated cardiomyopathy
• B. Hypertrophic cardiomyopathy
• C. Myocarditis
• D. Pericarditis

Correct answer: A

Rationale: Dilated cardiomyopathy is characterized by the weakening and enlargement of the heart muscle, leading to its reduced ability to pump blood effectively. This condition is different from hypertrophic cardiomyopathy, which involves abnormal thickening of the heart muscle, myocarditis, which is inflammation of the heart muscle, and pericarditis, which is inflammation of the pericardium. Therefore, the correct answer is Dilated cardiomyopathy.

3. What is the primary effect of a calcium channel blocker on the heart?

• A. Decreases heart rate
• B. Increases heart rate
• C. Increases blood pressure
• D. Decreases blood pressure

Correct answer: D

Rationale: The correct answer is D: Decreases blood pressure. Calcium channel blockers primarily work by relaxing blood vessels, leading to a decrease in blood pressure. While these medications can have secondary effects on the heart, such as reducing the workload of the heart muscle, the primary effect related to blood pressure regulation. Therefore, choices A, B, and C are incorrect as they do not reflect the primary action of calcium channel blockers on the heart.

4. What is a condition where the airways become inflamed and narrow, making breathing difficult?

• A. Asthma
• B. Bronchitis
• C. Pleurisy
• D. Tuberculosis

Correct answer: A

Rationale: Asthma is the correct answer. It is a condition characterized by inflammation, narrowing, and swelling of the airways, leading to symptoms like wheezing, shortness of breath, and coughing. Bronchitis is the inflammation of the bronchial tubes; Pleurisy is inflammation of the tissues that line the lungs and chest cavity; Tuberculosis is a bacterial infection that mainly affects the lungs.

5. Which condition occurs when the heart muscle is damaged due to a lack of oxygen, often resulting from a heart attack?

• A. Myocardial infarction
• B. Angina
• C. Pericarditis
• D. Pulmonary embolism

Correct answer: A

Rationale: The correct answer is A: Myocardial infarction. Myocardial infarction, commonly known as a heart attack, is the condition where the heart muscle is damaged due to a lack of oxygen, typically caused by a blocked coronary artery. Angina (choice B) is chest pain or discomfort that occurs when the heart muscle doesn't receive enough oxygen-rich blood. Pericarditis (choice C) is the inflammation of the pericardium, the thin sac-like membrane surrounding the heart. Pulmonary embolism (choice D) is a blockage in one of the pulmonary arteries in the lungs, often caused by a blood clot.

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