NURS 6501: MIDTERM EXAM:
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A young adult female patient presents with dysuria, frequency, and urgency. She has no significant medical history and is not pregnant. Which one of the following organisms is the most common cause of her symptoms?
Group of answer choices
- Proteus mirabilis
- Escherichia coli
- Staphylococcus saprophyticus
- Klebsiella pneumoniae
- Escherichia coli (E. coli):
- E. coli is responsible for 80-90% of urinary tract infections in otherwise healthy young women. It typically originates from the gastrointestinal tract and ascends the urethra to infect the bladder, causing symptoms like dysuria, frequency, and urgency.
- Proteus mirabilis:
- Proteus mirabilis is another uropathogen that can cause UTIs, but it is more commonly associated with complicated UTIs, particularly in patients with urinary tract abnormalities or those who have indwelling catheters. It can cause alkaline urine and is associated with struvite stones, but it is less common in healthy young women compared to E. coli.
- Staphylococcus saprophyticus:
- Staphylococcus saprophyticus is another common cause of UTIs, particularly in sexually active young women. However, it is less common than E. coli. It is a significant cause of UTIs in this population, but E. coli remains the most common overall cause.
- Klebsiella pneumoniae:
- Klebsiella pneumoniae is also a possible cause of UTIs, but it is more commonly associated with complicated UTIs, such as those occurring in patients with catheterization, diabetes, or hospital-acquired infections. It is less common in healthy, young women compared to E. coli.