A 47-year-old woman has persistent cough for the last 6 months. Cough is dry and increased upon exposure to cold and strong odors. Cough increases at night and occasionally awakens her from sleep. You suspect that she has asthma, and you order Spirometry. Her FEV1 is 2.5L, 70% predicted and her vital capacity is normal. Spirometry is repeated after short acting bronchodilator and her FEV1 increased to 2.8L, a 15% improvement. Which of the following is the most appropriate interpretation to her spirometry findings?
سؤال مجاني 3 من 10 اليوم · اشترك وكمّل بدون حد
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الإجابة: B. Her Spirometry fulfills the criteria of reversibility
FEV1 rose from 2.5 to 2.8 L after a SABA. That is +300 mL and ≥12%, which meets the definition of bronchodilator reversibility. "Variability" in the summary means between-visit or diurnal (PEF) changes, not a single pre/post-bronchodilator test. COPD is not reversible, and full PFTs are not needed once reversibility is shown. (Note: the stem says 15%, but 0.3/2.5 = 12%; it meets the criterion either way.)
ليش كل خيار صح أو غلط
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A
ليش غلط
COPD is only partially or not reversible to a bronchodilator, whereas her FEV1 rose by more than 12% and 200 mL, the asthma pattern.
✓ Asthma & asthma exacerbation.pdf · p. 12 -
B
ليش صح
Bronchodilator reversibility is an FEV1 improvement of more than 200 mL AND 12%. She improved by 300 mL (about 12%), so she meets it.
✓ Pulmonology 🫁.pdf · p. 6 -
C
ليش غلط
In the summary, variability refers to between-visit FEV1 changes or home PEF readings; a single before-and-after bronchodilator test is listed separately as bronchodilator reversibility, which is what her result shows.
✓ Pulmonology 🫁.pdf · p. 6 -
D
ليش غلط
Spirometry is already the first-line, gold-standard test, and a post-bronchodilator rise of at least 12% and 200 mL shows reversibility, so a full PFT is not needed.
✓ Asthma & asthma exacerbation.pdf · p. 5
- المصدر
- Pulmonology 🫁.pdf · p. 6
- المحاضرة
- Asthma · Pulmonology · Module B
- ظهر في
- Respi bank