Asociación entre las infecciones del tracto urinario y el parto pretérmino

Abstract

Objective To evaluate whether preterm birth is associated with a greater incidence of urinary tract infection (UTI) than term births. Design Retrospective case-control study. Setting Gynecology and Obstetrics Service of the Central University Hospital of Asturias (Spain). Participants Sixty pregnant women who gave birth before week 37. Control group: 37 pregnant women who had term deliveries. In both groups, all known causes of premature birth were ruled out except those related to UTI. Main measurements The variables analyzed were age, parity, symptomatic UTI, genital infections during pregnancy, gestational age in the first episode of risk of premature delivery, type of delivery, and perinatal complications. A descriptive, comparative study of both groups was performed. Results UTI was found in 50% of pregnant women in the study group compared with 18.9% of those in the control group (p = 0.002). Perinatal complications were found in 83.3% of neonates in the study group versus 5.4% of those in the control group (p = 0.000). No significant differences between the two groups were found in vaginal infections or delivery route. Conclusions Preterm birth without other known risk factors is associated with a greater incidence of UTI.