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* nbme 7 q
 #712276  
  jzhao - 12/08/12 08:22
 
  a healthy 54 yo woman undergoes an exercise stress test during the moderate phase of the exercise ,her pulse is 140, BP130/90,which of the following is the relative proportion of coranary oxygen deliver during the rest and during the exercise?

rest moderate exercise
A: systolic>diastolic systolic>diastolic
B sytolic> disstolic systolic< diastolic
C systolic< diastolic systolic>diastolic
C systolic
 
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* Re:nbme 7 q
#2793210
  okt3muro - 12/08/12 10:13
 
  @jzhao
in rest or moderate exercise both situation coronary flow will be more in diastole, in exercise diastole duration decreases but still coronary vessels are most dilated ....so in above choices none of the above.....are you missing an option?
also o2 demand increases in exercise...not o2 supply..
 
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* Re:nbme 7 q
#2793302
  jzhao - 12/08/12 11:46
 
  okt3muro, thx for your reply, you are right, somehow the post missed answer D: which is your answer, systolic  
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* Re:nbme 7 q
#2793303
  jzhao - 12/08/12 11:47
 
  systolic  
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* Re:nbme 7 q
#2793304
  jzhao - 12/08/12 11:49
 
  sorry I don't know why my post always get twisted, I mean, diastol>systolic both situation.  
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