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  #1  
Old 09-14-2012
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Default Respiratory physio q

Young Female has a 1 month Hx of progressive SOB and anxiety. Her symptoms are worse at the end of the day. Breath sounds are normal. BMI 24. She has difficulty taking a long deep breath. Her VC, ERV, TV are decreased and RV is within normal range. pH=7.33, Po2= 60 Pco2=75
What's the cause?
a. Obesity
b. CNS neoplasm
c. emphysema
d. Bronchitis
e. Chronic opiate use
f. Myasthenia gravis

Can someone explain why RV is within normal range when she has decreased ERV? Wouldn't there be more volume left (RV) in the lung since she has decreased ERV?
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Old 09-14-2012
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could be Mystania gravis
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  #3  
Old 09-14-2012
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Quote:
Originally Posted by CardioGrl View Post
Young Female has a 1 month Hx of progressive SOB and anxiety. Her symptoms are worse at the end of the day. Breath sounds are normal. BMI 24. She has difficulty taking a long deep breath. Her VC, ERV, TV are decreased and RV is within normal range. pH=7.33, Po2= 60 Pco2=75
What's the cause?
a. Obesity
b. CNS neoplasm
c. emphysema
d. Bronchitis
e. Chronic opiate use
f. Myasthenia gravis

Can someone explain why RV is within normal range when she has decreased ERV? Wouldn't there be more volume left (RV) in the lung since she has decreased ERV?
F
I would think of cns if not the worsening of symptoms at the end of the day

RV has nothing to do with erv it is always in the lungs and is constant doesnt change with respirations
It might be affected in obstructive (more air retained in lungs that cant be expired) and restrictive (less air retained in lung due decrease in its compliance)
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  #4  
Old 09-14-2012
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Default F is the answer

1 month of Hx of progressive SOB...... Myasthenia Gravis
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Old 09-14-2012
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Quote:
Originally Posted by CardioGrl View Post
Young Female has a 1 month Hx of progressive SOB and anxiety. Her symptoms are worse at the end of the day. Breath sounds are normal. BMI 24. She has difficulty taking a long deep breath. Her VC, ERV, TV are decreased and RV is within normal range. pH=7.33, Po2= 60 Pco2=75
What's the cause?
a. Obesity
b. CNS neoplasm
c. emphysema
d. Bronchitis
e. Chronic opiate use
f. Myasthenia gravis

Can someone explain why RV is within normal range when she has decreased ERV? Wouldn't there be more volume left (RV) in the lung since she has decreased ERV?
MYASTHENIA GRAVIS is the ans
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