drpkaur
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A 65 yr old man wid h/o of COPD brought to ER admitted in ICU for respiratory failure.after intubation and optimisation of ventilator settings,pt is still hypercapnic.which of thefollowing will improve his hypercapnia?
a.decrease tidal volume
b.dec minute ventilation
c inc CHO intake n dec fat intake
d inc fat intake n dec CHO intake
e inc the fraction of inhaled O2.
explanation plz.
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| mitty
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d
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| icemaiden
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d
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| icemaiden
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depends on Resp quotient---ie ratio of CO2 produced to O2 used.Burning CHO release more CO2 than burning Fat. This question was discussed in this forum before----dunno where it was though. Maybe u can google and find. ice. 
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| drpkaur
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Good icemaiden...
Ratio of co2 production and o2 consumption is called as respiratory qoutient. Its different for different substrates.CHO 1.0 ,Protein 0.8,fat 0.76. Thus fats will produce less CO2 for same amt of O2.this can be actually beneficial in pts with resp failure and hypercapnia.
answer is d..
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| pocas
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interesting question
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| muzammil
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cetanly interesting
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| young_doc
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Similar question was posted last week.. With a patient that's HYPOcapnic! Hence high-carb diet!
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| MRMAVERICK
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| anu_usmle
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Hi Drpkaur
From where did u grt this Q...Is that NBME Q??
Thanks
Anu
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| vanshita
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its Q Bank question
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| logitech
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which part of physio text-kaplan...does this context of resp quotient comes
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