A female patient's most recent urinalysis results are suggestive of bacteriuria. When assessing this patient, the nurse's data analysis should be informed by what principle?
A) Most UTIs in female patients are caused by viruses and do not cause obvious symptoms.
B) A diagnosis of bacteriuria requires three consecutive positive results.
C) Urine contains varying levels of healthy bacterial flora.
D) Urine samples are frequently contaminated by bacteria normally present in the urethral area.
Ans: D
Feedback:
Because urine samples (especially in women) are commonly contaminated by the bacteria normally present in the urethral area, a bacterial count exceeding 105 colonies/mL of clean-catch, midstream urine is the measure that distinguishes true bacteriuria from contamination. A diagnosis does not require three consecutive positive results and urine does not contain a normal flora in the absence of a UTI. Most UTIs have a bacterial etiology.
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