SmokyWaters
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45 year old White male presents with abdominal pain radiating to back. He was hospitalized. During his stay, he developed tachypnea. Chest X ray showed infilterates in both lung fields. What is his FEV1/FVC?
1. increased
2. decreased
3. normal
Edited by SmokyWaters on 10/29/07 - 08:03 AM. Reason: forgot to write the title
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| SmokyWaters
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anybody? ?
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| SmokyWaters
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ppl...try it...this was the one whcih was a nightmare for me...still cant find an answer 
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| SmokyWaters
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A recent report shows that "at 12 months, lung spirometry tests demonstrated mild abnormalities that were stable over time (64% and 49% had <80% predicted forced expiratory volume in 1 sec [Fev1] and forced vital capacity [Fvc], respectively)."
--Heyland, Crit Care Med. 2005 Jul;33(7):1549-56.
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| sfk
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increased. i think he got ac pancreatitis, non cardigenic pulm edema, resp distress, decreased compliance. and therefore inc FEV1/FVC.
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| sfk
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hey smokywaters, whats the answer??
wanna know whether my far fetched theory is right or not.
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| paheli
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i think it is decreased.
due to the presumed acute pancreatitis, forced expiration [which requires active use of abdominal wall muscles] will be severely restricted. greater decrease in FEV1, compared to FVC.
smoky, where did you get the qn from? how come no answer? anyone else want to discuss?
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| cricket9014
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during tachypnea the thorax does not make comlete expasion, that is why the lungs behave like in a restrictice pattern. So FEV1/FVC is decreased or normal
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| dr ruman
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it is increased,as all ARDS
JUST COMMEMORIZE:
All obs diseases,ch bronchitis,emphysema,both type,asthma,bronchiectasis,show DECRESE IN FEV1/FVC
WHILE ALL RESTRICTIVE DISESE:chest wall disorder:obseity kyphoscoliosis.polio
INTRINSIC lung diseases:ARDS which is asked in ur question above,nenatal resp distress,pnemoconiosis,sarcoidosis,good pasture,wegenernay hypersensitivity reaction affecting pul functions with tachypnea,shock,trama,gastric aspiration cause NON COMPLIANT lungs,with decrease FVC,more affected than fev 1.so casusing INCREASED fev1/fvc
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| eekoo
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Increased, Dr. Ruman is right. Memorize Obstructive decreased, Restrictive, like an infiltrate above is increased.
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| SmokyWaters
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I thought the same that it would increase... 
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