Pneumologia SBPT Practice Questions - Título De Especialista Em Pneumologia E Tisiologia (Sociedade Brasileira De Pneumologia E Tisiologia AMB) Exam

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A 38-year-old woman with recurrent wheezing undergoes pre- and post-bronchodilator spirometry. Her baseline FEV1 is 2.00 L. Following the inhalation of 400 mcg of salbutamol via metered-dose inhaler with a spacer, her FEV1 increases to 2.28 L (an absolute gain of 280 mL and a 14% increase). According to SBPT guidelines, how should this bronchodilator response be classified?

Positive significant bronchodilator response, satisfying both the absolute volume (≥ 200 mL) and percentage (≥ 12%) thresholds. Negative bronchodilator response, because a minimum absolute gain of 350 mL is required to confirm airway reversibility. Borderline response, requiring a repeat trial with an anticholinergic agent (ipratropium bromide) before confirming reversibility. Positive response based solely on the percentage increase, as the absolute volume requirement is waived when baseline FEV1 is under 2.5 L.

Correct Answer:

Positive significant bronchodilator response, satisfying both the absolute volume (≥ 200 mL) and percentage (≥ 12%) thresholds.

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