Which of the following pulmonary function testing values would be found in a patient with severe, obstructive bronchiectasis? A) Decreased RV/TLC ratio B)Increased PEFR C)Increased FEF_25%-75% D)Decreased FEF_25%-75%

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Severe, obstructive bronchiectasis would lead to decreased air flow, leading to decreased FEV1/FVC and FEV1, as seen in choice D. Decreased RV/TLC ratio (choice A) is not typically found in obstructive lung diseases. Increased PEFR (choice B) and increased FEV1/FVC and FEV1 (choice C) are more commonly found in restrictive lung diseases.

Which of the Following Pulmonary Function Testing Values Would Be