Pyuria in the Absence of Bacteriuria Quiz
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Questions and Answers

Which condition can lead to permanent kidney damage as a complication of an untreated UTI?

  • Interstitial nephritis
  • Polycystic kidney disease
  • Acute glomerulonephritis (correct)
  • Hemolytic uremic syndrome

What is a possible cause of pyuria in the absence of bacteriuria and UTI?

  • Nephrolithiasis (correct)
  • Diverticulitis
  • Pancreatitis
  • Gonorrhea

What autoimmune disease can lead to glomerulonephritis as a complication?

  • Rheumatoid arthritis
  • Multiple sclerosis
  • Lupus nephritis (correct)
  • Type 1 diabetes

Which of the following is NOT considered a risk factor for complicated UTIs?

<p>Healthy young adults (D)</p> Signup and view all the answers

When are cultures recommended in cases of suspected complicated UTIs?

<p>Patients with recurrent UTIs (&gt; 3/yr) (D)</p> Signup and view all the answers

Which imaging modality is NOT typically used for evaluating the urinary tract?

<p>MRI scan (C)</p> Signup and view all the answers

Which bacteria is the most common cause of cystitis and pyelonephritis, accounting for 80% of cases?

<p>Escherichia coli (D)</p> Signup and view all the answers

In hospitalized patients, which bacteria accounts for about 40% of cases of UTI?

<p>Enterococcus faecalis (A)</p> Signup and view all the answers

Which gram-positive cocci is isolated in about 10% of bacterial UTIs?

<p>Staphylococcus saprophyticus (A)</p> Signup and view all the answers

Which of the following is NOT a common bacterial pathogen causing UTIs according to the text?

<p>Streptococcus agalactiae (B)</p> Signup and view all the answers

Among hospitalized patients, what percentage of cases do gram-negative species like Klebsiella, Proteus, and Pseudomonas account for?

<p>About 25% (C)</p> Signup and view all the answers

Which pathogen causing UTI falls under the 'Other pathogens that might cause UTI' category in the text?

<p>Candida albicans (A)</p> Signup and view all the answers

What is the main difference between UPEC pathogenesis and the cause of acute glomerulonephritis?

<p>UPEC colonizes the bladder, while acute glomerulonephritis is caused by deposition of immune complexes on the glomerular basement membrane. (C)</p> Signup and view all the answers

Which statement best describes the pathogenesis of UTIs caused by Uropathogenic Escherichia coli (UPEC)?

<p>UPEC ascends into the bladder lumen and forms biofilms on the bladder epithelium. (B)</p> Signup and view all the answers

What distinguishes the pathogenesis of complicated UTIs from uncomplicated UTIs?

<p>Complicated UTIs involve kidney colonization, while uncomplicated UTIs are limited to the urethra and bladder. (A)</p> Signup and view all the answers

Which autoimmune disease can lead to the development of acute glomerulonephritis?

<p>Lupus erythematosus (A)</p> Signup and view all the answers

What is the main mechanism through which acute glomerulonephritis occurs?

<p>Deposition of immune complexes on the glomerular basement membrane (A)</p> Signup and view all the answers

What distinguishes the growth pattern of Uropathogenic Escherichia coli (UPEC) from that of bacteria causing acute glomerulonephritis?

<p>UPEC grows as planktonic cells in urine, while bacteria causing acute glomerulonephritis form biofilms. (B)</p> Signup and view all the answers

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