Alveolar recovery from ARDS question....

[qman123]

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Hey, I had a question from a practice exam about
the aftermath after alveolar recovery from ARDS?

The answer choices were:
Decreased Diffusion capacity,
Decreased surfactant
Increased surfactant
Decreased Dead Space
Increased Neutrophils.

Anyone has a clue, and where I would even look to find this out??

 

[The Homunculus]

Increased surfactant. ARDS damages the pneumocytes (decreases surfactant production), so upon resolution the production of surfactant will be increased due to increased pneumocyte function. At least that is what i would go with...

 

[knuckles]

Hey, I had a question from a practice exam about
the aftermath after alveolar recovery from ARDS?

The answer choices were:
Decreased Diffusion capacity,
Decreased surfactant
Increased surfactant
Decreased Dead Space
Increased Neutrophils.

Anyone has a clue, and where I would even look to find this out??

Wouldn't there be permanent damage so decreased diffusion capacity

 

[xx216xx]

i remember this question because it bothered me that i didn't know it so i ended up making a note of it looking it up after. I remember the question said 1 year later what would be the case and according to Goljan there is interstitial fibrosis after ARDS so the answer should be decreased diffusion capacity.

 

[Sol Rosenberg]

Definitely decreased diffusion capacity, because the pathology in ARDS is mediated by neutrophils -- they totally destroy the architecture of the alveoli, so they heal with fibrosis, which decreases diffusion capacity (as posted above.)

 

[The Homunculus]

Yeah I think I over thought that question...I read it as "which is most likely to be found w/ resolved ARDS in comparison to when he actually had ARDS"...I really have to stop doing this lol

 

[knuckles]

haha and my undersimplification got the right answer. 😛

 

[MilkmanAl]

I would've said decreased diffusion due to the fact that Type 2 pneumocytes are the regenerative cells and aren't terribly good at letting stuff pass through them. Yay for getting questions right with bad logic.