What is the most common type of urinary tract infection in pregnant women?

Asymptomatic bacteriuria is indeed the most common type of urinary tract infection (UTI) encountered in pregnant women. During pregnancy, the physiological changes in the urinary tract, such as increased urinary stasis and altered immune response, create an environment that makes it easier for bacteria to colonize the urinary system.

Asymptomatic bacteriuria is particularly significant because although women may not exhibit symptoms, the presence of bacteria in the urine can lead to more serious complications if left untreated, including acute pyelonephritis, which is a severe kidney infection that can arise from untreated bacteriuria. Screening for asymptomatic bacteriuria is a standard part of prenatal care because effective treatment can significantly reduce the risk of complications for both the mother and the fetus.

Acute cystitis and acute pyelonephritis are considered symptomatic forms of UTIs, with cystitis presenting with inflammation of the bladder and pyelonephritis involving the kidneys. Chronic UTI typically refers to recurring UTIs, which is not a distinct category frequently identified in the context of pregnancy.

This understanding is crucial for managing urinary tract health during pregnancy, ensuring that potential risks are mitigated through appropriate screening and treatment.