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  #1  
Old 08-02-2011
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Warning! NRDS and hypoxemia

A premature baby in respiratory distress, the reason for hypoxemia is?

A. Ventilation defect
B. Perfusion defect
C. Diffusion defect
D. CNS depression
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  #2  
Old 08-02-2011
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A. Ventilation defect
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Old 08-02-2011
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Quote:
Originally Posted by plasticsurgeon View Post
A premature baby in respiratory distress, the reason for hypoxemia is?

A. Ventilation defect
B. Perfusion defect
C. Diffusion defect
D. CNS depression
A. Ventilation defect.
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Old 08-02-2011
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Quote:
Originally Posted by plasticsurgeon View Post
A premature baby in respiratory distress, the reason for hypoxemia is?

A. Ventilation defect
B. Perfusion defect
C. Diffusion defect
D. CNS depression
RDS u ve intra alveolar hyaline membrane deposition so there is increased dead space so the defect is ventilatory this will lead to hypoxemia with increaed A-a gradient please correct me if im wrong
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  #5  
Old 08-02-2011
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a-ventilation defect
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Old 08-02-2011
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Default Why is it not diffusion defect?

Folks!

As mentioned, NRDS is also called Hyaline membrane disease,

Well, when there is a membrane wont it hamper diffusion!

Can it be Diffusion defect?
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Old 08-02-2011
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Default I wud say its Ventilation defect!!!

Quote:
Originally Posted by plasticsurgeon View Post
Folks!

As mentioned, NRDS is also called Hyaline membrane disease,

Well, when there is a membrane wont it hamper diffusion!

Can it be Diffusion defect?
Ventilation,is the amount of air reaching the alveoli

Perfusion,is the amount of blood flowing through the pulmonary capillaries..



Hyaline membrane prevents the ventilated air to diffuse in to the alveoli,

but wait it wud be ventilatory defect because the alevoli,lacks surfactant and it collapses so the lesser space for adequate ventilation..



correct me if i am wrong!!!
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Old 08-02-2011
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Answer is ventilation defect.
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  #9  
Old 08-02-2011
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Correct Answer Ventilation defect

The correct Answer is Ventilation defect.

It leads formation of Hyaline membrane, which causes the alveoli to collapse. So, the air which is breathed in i.e. Ventilated does not reach alveoli. So, the blood in pulmonary circulation gets shunted...

The only confusion could had been diffusion defect, which is not true because there is not anything wrong with alveolar membrane....they are just collapsed
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