Pyuria in the Absence of Bacteriuria Quiz

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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?

Healthy young adults Signup and view all the answers

When are cultures recommended in cases of suspected complicated UTIs?

Patients with recurrent UTIs (> 3/yr) Signup and view all the answers

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

MRI scan Signup and view all the answers

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

Escherichia coli Signup and view all the answers

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

Enterococcus faecalis Signup and view all the answers

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

Staphylococcus saprophyticus Signup and view all the answers

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

Streptococcus agalactiae Signup and view all the answers

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

About 25% Signup and view all the answers

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

Candida albicans Signup and view all the answers

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

UPEC colonizes the bladder, while acute glomerulonephritis is caused by deposition of immune complexes on the glomerular basement membrane. Signup and view all the answers

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

UPEC ascends into the bladder lumen and forms biofilms on the bladder epithelium. Signup and view all the answers

What distinguishes the pathogenesis of complicated UTIs from uncomplicated UTIs?

Complicated UTIs involve kidney colonization, while uncomplicated UTIs are limited to the urethra and bladder. Signup and view all the answers

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

Lupus erythematosus Signup and view all the answers

What is the main mechanism through which acute glomerulonephritis occurs?

Deposition of immune complexes on the glomerular basement membrane Signup and view all the answers

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

UPEC grows as planktonic cells in urine, while bacteria causing acute glomerulonephritis form biofilms. Signup and view all the answers