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  #1  
Old 11-04-2012
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Arrow Billy Step 1 Questions # 76

A 3-year-old boy has had a cough, headache, and slight fever for 5 days. His mother becomes concerned because he is now having increasing respiratory difficulty. On physical examination, his temperature is 37.8C, pulse is 81/min, respirations are 25/min, and blood pressure is 90/55 mm Hg. On auscultation, there are inspiratory crackles, but no dullness to percussion or tympany. Respiratory syncytial virus is isolated from a sputum sample. Which of the following chest radiographic patterns is most likely to be present?


□ (A) Lobar consolidation
□ (B) Interstitial infiltrates
□ (C) Large pleural effusions
□ (D) Upper lobe cavitation
□ (E) Hyperinflation
□ (F) Hilar lymphadenopathy
□ (G) Peripheral mass
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Old 11-04-2012
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not sure

E

thanks
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Old 11-04-2012
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Interstial infiltrates .. Atypical pneumonia
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int. infiltrates
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Old 11-04-2012
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Quote:
Originally Posted by billy View Post
A 3-year-old boy has had a cough, headache, and slight fever for 5 days. His mother becomes concerned because he is now having increasing respiratory difficulty. On physical examination, his temperature is 37.8C, pulse is 81/min, respirations are 25/min, and blood pressure is 90/55 mm Hg. On auscultation, there are inspiratory crackles, but no dullness to percussion or tympany. Respiratory syncytial virus is isolated from a sputum sample. Which of the following chest radiographic patterns is most likely to be present?


□ (A) Lobar consolidation
□ (B) Interstitial infiltrates
□ (C) Large pleural effusions
□ (D) Upper lobe cavitation
□ (E) Hyperinflation
□ (F) Hilar lymphadenopathy
□ (G) Peripheral mass
b.interstitial infiltrates-RSV-atypical pneumonia.
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Old 11-04-2012
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Quote:
Originally Posted by venky2600 View Post
not sure

E

thanks
ya the right one is B......always confuscious to me
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I go with BB too..............thanx.
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Old 11-05-2012
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Default my answer :)

(B) Interstitial infiltrates
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Old 11-05-2012
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Correct Answer B is correct

Respiratory syncytial virus pneumonia is most common in children, and it can occur in epidemics. Viral, chlamydial, and mycoplasmal pneumonias are most often interstitial, without neutrophilic alveolar exudates. The diagnosis is often presumptive because culture is difficult and expensive. Lobar consolidation is more typical of a bacterial process, such as can be seen in Streptococcus pneumoniae infection. Pleural effusions can be seen in pulmonary inflammatory processes, but they are most pronounced in heart failure. Cavitation is most likely to complicate secondary tuberculosis in adults. Hyperinflation can accompany bronchoconstriction in asthma. Marked lymphadenopathy is more characteristic of chronic processes, such as granulomatous diseases or metastases. A mass lesion suggests a neoplasm or granuloma, not a viral infection.
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Microbiology-, Pathology-, Respiratory-, Step-1-Questions

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