Case A: Patient A is a 30-year-old male who was admitted to the hospital from ho

Question

Case A: Patient A is a 30-year-old male who was admitted to the hospital from home after 1 week of cough, profuse nocturnal sweating, loss of appetite and hyposomnia. He was seen by an emergency room physician who noted signs of depression. The patient has a history of intravenous drug abuse and hepatitis B. Chest X-ray showed infiltrate in the middle of left lung with diameter of 1.7 cm with signs of cavitation. Radiology Blood Culture No growth at 5 days Sputum Smear 4+ squamous epithelial cells, Gram Stain 3+ segmented neutrophils, no organisms AFS (acid fast stain) Sputum Culture No growth at 48 hrs No organisms What pathogen is most likely the etiological agent of this infection? (1pt) Mention genus and species. 1. 2. Which piece of information in the case points to a bacterial infection? (1pt) 3. Why the culture did not have growth after 48 hours? (1pt) 4. What is the possible reason for which no acid-fast microorganisms were found? (1pt)

Explanation / Answer

1.Streptococus pneumonia

2.Pneumonia

3.It lacks bacteria

4.AFS is meant for diagnosis of Tuberculosis.Patient has not been suffering from with it.

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