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 CVS q5  



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Author3 Posts
  #1

5. If O2 consumption (measured by analysis of mixed expired gas) is
300 ml/min, arterial 02 content is 20 ml/100 ml blood, pulmonary arterial O2 content is 15 ml/100 ml blood, and heart rate is 60/min, what is the stroke volume?

A. 1 ml
B. 10 ml
C. 60 ml
D. 100 ml
E. 200 ml




  #2

using Fick's law :CO =O2 uptake / (A-V)conc. diff.

CO = 300/(20-15)% = 6000ml/min

CO = HR X SV :arrow: SV = CO/HR :arrow: SV = 6000/60 = 100


D. 100 ml


  #3

good explanation..
Thanks )





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