abg and pH in restrictive lung diseases

Discussion in 'Step I' started by trgf, Jan 12, 2011.

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  1. trgf


    Nov 15, 2010
    I know that the standard measurements for restrictive lung dz. is as follows.
    ABG: decrease p02= increase RR, decrease pCO2, increase pH. Is there any way to rank these indicators? Reason I am asking is because I saw a question where the patient has a decrease in pH and an increase in pCO2. :eek:
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  3. OveractiveBrain

    OveractiveBrain Banned 2+ Year Member

    Jun 15, 2009
    Dirty Dirt
    I think you are asking the wrong question

    Restrictive lung disease is diagnosed by the pulmonary function tests, the FEV1/FVC being normal or elevated, while the FEV1 and all other lung volumes are decreased.

    The ABG changes in acid-base oriented diseases. While a smaller lung volume may induce an increased respiratory rate to satisfy oxygen requirements, leading to low Co2 and high pH, it is not characteristic, nor diagnostic, of restrictive lung diseases.

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