Question
All of the following statements about “lung A”are true. Except?
A. Breathlessness is the charachteristic presenting symptom.
B. Diffusion rate of carbon monoxide is reduced.
C. Restrictive pattern on pulmonary function test is seen.
D. Long term bronchadilater therapy does not improve lung function.
Show Answer
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Correct Answer » C
Explanation
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The lung marked as “A” shows emphysema while the other marked as “B” is a normal lung.
Restrictive pattern on pulmonary function test is not seen in cases of emphysema.
- The hallmark of Emphysema is air flow obstruction and pulmonary function tests show an obstructive pattern
Breathlessness (Dyspnea) is a characteristic presenting symptom
- The three most common symptoms in COPD (emphysema) are cough, sputum production and exertional dyspnea
Obstructive (and not Restrictive) pattern is seen on PFT
The hallmark of Emphysema (COPD) is airflow obstruction.
- PFT shows airflow obstruction with a reduction in FEV i/FVC (< 0.7)
Diffusion of carbon monoxide is Reduced (DLCO)
- Three main categories of disease with Reduced DLCO are:
- Interstial Lung disease
- Emphysema
- Pulmonary vascular Disease.
