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11 Cards in this Set
- Front
- Back
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What increases closing volume?
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small airway ds, chronic bronchitis, emphysema, interstitial edema, vascular congestion
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What does not increase closing volume?
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position, anesthesia, paralysis
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When is CC>FRC supine?
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Age>44
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When is CC>FRC upright?
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Age>65
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What is the effect of CC>FRC?
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Increase in A-a gradient
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What is the area of the blood-gas exchange area in the lungs?
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50-100 m^2
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What is the thickness of the blood-gas exchange membrane in the lungs?
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0.3 micrometers
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What gas is used to test diffusing capacity?
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CO
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What is the normal diffusing capacity for CO?
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25 ml/min/mmHg
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What PFTs increase during pregnancy?
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MV, TV, O2 consumption, respiratory rate, PaO2 [More volume moved - using reserves - for the goal of increasing PaO2]
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What PFTs decrease during pregnancy?
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Airway resistance [get more in], FRC, ERV, RV [using reserves], PaCO2 [blow more off]
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