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  #1  
Old 04-03-2010
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Question Two Microbiology Linked Questions?

questions 1 and 2 are linked:

a 54-year old man came to the ED with complaints of fever, chills, headache, and cough productive of minimal sputum. he had been attending a conference at a local hotel for the past week. on exam he appeared ill and was in moderate respiratory distress. over the course of the next three days, several more individuals came in with similar complaints.
1. laboratory studies are more likely to show:
a. increased serum pH
b. increased serum K+ concentration
c. decreased serum Na+ concentration
d. increased serum Ca+ concentration
e. increased serum HCO3- concentration

2. in evaluating the course of the illness, which of the following is most appropriate?
a. direct urine Ag to identify Legionella pneumonia.
b. blood cultures to identify S. pneumonia
c. lung biopsy to identify Pneumocystis jiroveci
d. DFA of nasopharyngeal secretion to identify influenza virus
e. serology using paired sera to identify C. pneumonia

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  #2  
Old 04-03-2010
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The history indicates Legionella pneumophila infection: hotel involving scenario (--> central air conditioning facilities), multiple cases, respiratory distress. Legionella is characteristically associated with hyponatremia, especially in adults.

So the correct answers are successively 1-->c & 2-->a.
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  #3  
Old 04-03-2010
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damn.. u are good.
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Old 04-03-2010
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1-===========================c
2-===========================a
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Old 04-03-2010
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u are ryte too shahra
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Old 04-12-2012
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Quote:
Originally Posted by Seetal View Post
u are ryte too shahra
leginolle destroys the juxtglomerular complex causin hyporeninism.. so y not inc potassium..
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Old 04-12-2012
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Wont respiratory distress >> hyperventilation cause Alkalosis>> increased pH
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Old 04-13-2012
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Quote:
Originally Posted by Rookie View Post
Wont respiratory distress >> hyperventilation cause Alkalosis>> increased pH
You are right. The extent of rise in pH could be mild or moderate.

Though I guess question intended everyone to identify key diff diagnostic feature.
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