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Ventilation Perfusion Ratio (V/Q)

Duration: 29:43

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Jun 21 2019, 8:50 pm

In a video u said that smaller alveoli are not stable and now u r saying they are more complaint and better than larger . I am not getting this point of yours . 

Plz comment on it .



Jun 21 2019, 8:03 pm

Smaller alveoli are like tiny balloons and we know that they tend to collapse more than the larger alveoli. However, because they are compliant and have radial traction etc. they are stabilized back to the normal. If we have any condition (e.g. inappropriate amount of surfactant, connective tissue destruction, etc.) where we cannot pull them back to the normal size then they will collapse.



Feb 24 2019, 7:38 pm

Dr, Mobeen,

When you compare the pressure of the blood vessel (arterial / venous) to that of the alviolar pressure, the alviolar pressure refers to the pressure of alvioli during inspiration when it is filled with air? 

This video discusses: Alveolar ventilation Blood flow through lungs Calculating the ratio Evaluating the V/Q ratio Generalizations

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