Microbiology Quiz #27, Klebsiella  

1. A 65-year-old man with a history of chronic alcohol abuse presents to the emergency department with fever, productive cough, and difficulty breathing. Physical examination reveals crackles in the right lower lobe of the lung. A chest X-ray shows a dense lobar consolidation. Sputum culture grows a lactose-fermenting, encapsulated gram-negative rod. Which of the following factors most likely contributes to the pathogenicity of the organism causing this patient's pneumonia? 

Question 1 of 5

2. A diabetic patient presents with a fever and a productive cough that produces a "currant jelly" sputum. Which of the following organisms is most likely responsible for this patient's symptoms? 

Question 2 of 5

3. A hospitalized patient develops a fever and urinary frequency with urgency. Urinalysis reveals pyuria and bacteriuria. Culture grows a gram-negative rod resistant to multiple antibiotics, including ampicillin. Which of the following mechanisms is most likely responsible for this organism's multidrug resistance? 

Question 3 of 5

4. Which of the following is a common clinical presentation associated with Klebsiella pneumoniae infection in the urinary tract? 

Question 4 of 5

5. A 76-year-old man with a history of chronic obstructive pulmonary disease (COPD) is admitted to the intensive care unit with severe pneumonia. A sputum sample reveals gram-negative rods that are resistant to multiple antibiotics. The patient's condition deteriorates despite broad-spectrum antibiotic therapy. Which of the following factors most likely predisposed this patient to an infection with a multidrug-resistant organism? 

Question 5 of 5


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