What is the risk to pregnancy associated with untreated asymptomatic bacteriuria?

Untreated asymptomatic bacteriuria during pregnancy significantly increases the risk of complications such as pyelonephritis, which can lead to preterm labor. The presence of bacteria in the urine, even when not causing symptoms, can provoke an inflammatory response that can trigger uterine contractions and cervical changes, leading to preterm labor.

This condition often goes unnoticed without screening, and if left untreated, can escalate to more serious infections, affecting both maternal and fetal health. Therefore, addressing asymptomatic bacteriuria early in pregnancy is crucial to mitigate the risk of these complications, particularly preterm labor, ensuring better outcomes for both the mother and the baby.