A lower urinary tract infection occurring during pregnancy requires a carefully considered antibiotic choice. Both the decision to treat and the selection of agent are shaped by gestational stage and fetal safety.
Pregnancy affects both the threshold for initiating treatment and the range of appropriate antibiotics. Not every agent suitable outside pregnancy can be safely used across all three trimesters.
Oral antibiotic therapy is the recommended approach. The choice of agent depends in part on gestational trimester: certain options are appropriate for use throughout pregnancy, while at least one carries a restriction to the first and second trimester only and must be avoided near term.
Improvement of dysuria, urinary frequency, urinary urgency, and suprapubic pain within 48–72 hours.
DOI: 10.1053/j.ajkd.2023.08.009
Pregnancy can affect the threshold to treat UTIs and the type of antibiotics used.
Recommended for use in pregnancy.
Can be used during the first and second trimester.
Avoid use in the last trimester due to the risk of hemolytic anemia in the newborn.
Lack of improvement or progression of symptoms after about 48–72 hours of initial empiric antibiotics.
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