Risk of urinary tract infection in patients with hydroureter: An analysis from the Society of Fetal Urology Prenatal Hydronephrosis Registry

Prenatal hydronephrosis: Bridging pre‐ and postnatal management

“…9 In a prenatal HN registry study by Holzman et al, a ureteral diameter ≥7 mm was associated with a higher risk of developing UTI thus making a case for CAP, while those with <7 mm without VUR could be managed more conservatively. 29 Song et al…”

“…51 Many providers would prescribe CAP for all infants with HUN and continued until a specialty provider can evaluate them. 29,39,40 Additional imaging with a VCUG is usually indicated for highgrade HUN. Any male infant with bilateral HUN should undergo an early VCUG, less for diagnosis of VUR, but more importantly, so as not to miss a Lower urinary tract obstruction (LUTO).…”

“…Trimethoprim‐sulfamethoxazole and nitrofurantoin are contraindicated in newborns due to the risk of kernicterus and hemolytic anemia, respectively 9 . In a prenatal HN registry study by Holzman et al., a ureteral diameter ≥7 mm was associated with a higher risk of developing UTI thus making a case for CAP, while those with <7 mm without VUR could be managed more conservatively 29 . Song et al.…”

“…When describing risk factors for UTI in male infants with HN, circumcision status has been consistently reported to influence infection rates 29,39–41 . Ellison et al.…”

“…For bilateral SFU 1‐2 HUN for females, an ultrasound can be done within the first few weeks of life, however for the remainder of scenarios, especially in male infants, the ultrasound should be done after 48 h, provided the infants are otherwise well with normal urine output 51 . Many providers would prescribe CAP for all infants with HUN and continued until a specialty provider can evaluate them 29,39,40 …”