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Anatomy Respiratory system 68d6a6a7

All the following statements about Emphysema are true except

A
Breathlessness is the characteristic presenting symptom
B
Diffusion rate of carbon monoxide is reduced
C
Restrictive pattern on pulmonary function test is seen
D
Long term bronchodilator therapy does not improve lung function
High-Yield Explanation
The hallmark of Emphysema is air flow obstruction and pulmonary function test show an obstructive patters Ref Harrison 19th edition pg 306e-4

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