NBME 21 Increased radial traction on airways (NBME Answers)

NBME 21 Answers ↦

nbme21/Block 3/Question#2 (35.2 difficulty score)
A 40-year-old man with interstitial pulmonary ...
Increased radial traction on airways🔍
tags:

+4
submitted by benzjonez(44),

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cienfuegos I think this is it -pulmonary fibrosis increases elastic recoiland widens airway 2/2 increased outward force (radial traction) by fibrotic tissue thus decreasing airflow resistance thus supernormal expiratory flow rates (higher than nl following correction for lung volume) +3

notyasupreme ^ Why do I feel like this is literally not english, I have no clue what's being said here. Can someone else explain it? +1

+3
submitted by nwinkelmann(285),

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champagnesupernova3 FEV1 is increased due to greater recoil of the lung tissue. FEV1/FVC is increased bc of that and bc of decrease in FVC +

mangotango But I thought with restrictive diseases, the FEV1 dec a little and FVC decreases a lot, yielding an FEV1/FVC ratio that's normal or increased?? +1

+2
submitted by visualninjacontender(16),

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sahusema The fibrosis causes contraction, the airways are pulled open giving less resistance to airflow +1

https://o.quizlet.com/XIqQUx.6YJFeQ-ACk9pWvA.png

radial traction emphysema vs fibrosis

+1/- alexv0815(-1),