malinda
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A 65-year-old man presents with a productive cough and difficulty breathing. His sputum culture is positive for
encapsulated gram-positive cocci, which are often seen in pairs. The patient's dyspnea is primarily due to which
of the following mechanisms?
A. Inadequate perfusion
B. Inadequate ventilation
C. Increased airway resistance
D. Increased lung compliance
E. Poor oxygen diffusion
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| sarika
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e
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| nadiabarati
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B?
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| robin082006
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how about C?
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| mazinger
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I think its b atelectasis predispose to pneumonias..
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| druas
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i would go with E....in pneumonia there will be a problem with diffusion
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| malinda
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yes E.pneumonias will produce mucous in the smaller airways that will interfere with diffusion.I thought it should be E as any mucous in airway should increase its resistance
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| fox
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I feel B should be better option...Im bumping it up to see what our contemporaries think
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| Allymd
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B... in pneumonia we have V/Q mismatch, I think due to decrease in ventilation caused by the inflammation.
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| fox
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Perfect
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| step12007
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I also think it is mostly due to decreased ventilation. Pnumonia causes consolidatio an so decrease ventilation.
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| X-Ray
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either A or B
but I d tend to say b
oldie but goodie !
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| drfax
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E
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| drfax
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E.
oxygen is required for O2 dependent myloperoxidase system to damage bacteria,
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| docswapna
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i think E is right.
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