Which of the following pertain to obstructive lung diseases?W. Patients are unable to completely exhale air, leading to increased dead space within the lungs.X. They lead to a decreased capacity for gas exchange.Y. Examples are chronic bronchitis and emphysema.Z. Examples are asbestosis and silicosis.Question 23Select one:a.if only W, X and Y are correctb.if only W and Y are correctc.if only X and Z are correctd.if only Z is correcte.if all are correct
Question
Which of the following pertain to obstructive lung diseases?W. Patients are unable to completely exhale air, leading to increased dead space within the lungs.X. They lead to a decreased capacity for gas exchange.Y. Examples are chronic bronchitis and emphysema.Z. Examples are asbestosis and silicosis.Question 23Select one:a.if only W, X and Y are correctb.if only W and Y are correctc.if only X and Z are correctd.if only Z is correcte.if all are correct
Solution
The correct answer is a. if only W, X and Y are correct.
Here's why:
W. Patients are unable to completely exhale air, leading to increased dead space within the lungs. This is true for obstructive lung diseases. These diseases obstruct the airways, making it harder for air to flow out.
X. They lead to a decreased capacity for gas exchange. This is also true. Obstructive lung diseases damage the lungs, which decreases their capacity to exchange gases like oxygen and carbon dioxide.
Y. Examples are chronic bronchitis and emphysema. This is true. Both chronic bronchitis and emphysema are types of obstructive lung disease.
Z. Examples are asbestosis and silicosis. This is not true. Asbestosis and silicosis are types of restrictive lung diseases, not obstructive. They restrict the lungs from fully expanding, but they do not obstruct the airways.
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