title: A study of resistive indices in the arcuate arteries of the kidney over the course of gestation.
abstract: OBJECTIVE
  Our purpose was to assess whether there was a variation in the resistive index (RI) of the arcuate artery in the kidneys of patients with hydronephrosis in pregnancy.
  
  
  METHODS
  Forty-seven patients were studied to establish norms for the RI of the arcuate arteries in pregnancy, and these measurements were correlated with the development of hydronephrosis over the course of gestation.
  
  
  CONCLUSIONS
  The RIs were noted to remain unchanged from the nonpregnant state throughout gestation. They were also unchanged by the presence of the physiologic hydronephrosis of pregnancy.
authors.affiliation: Department of Obstetrics and Gynecology, Medical College of Ohio, Toledo 43699-0008, USA.
authors.forename: T J
authors.initials: TJ
authors.lastname: Horrigan
authors.forename: C S
authors.initials: CS
authors.lastname: Reese
authors.forename: J A
authors.initials: JA
authors.lastname: Parres
authors.forename: H S
authors.initials: HS
authors.lastname: Clarke
authors.forename: A
authors.initials: A
authors.lastname: Desmond
authors.forename: K A
authors.initials: KA
authors.lastname: Kropp
mesh_terms: D000328:Adult; D001158:Arteries / Q000000981:diagnostic imaging / Q000503:physiopathology; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D006869:Hydronephrosis / Q000000981:diagnostic imaging / Q000503:physiopathology*; D007668:Kidney / Q000098:blood supply* / Q000000981:diagnostic imaging; D011247:Pregnancy; D011248:Pregnancy Complications / Q000000981:diagnostic imaging / Q000503:physiopathology*; D018616:Ultrasonography, Doppler, Duplex; D014655:Vascular Resistance / Q000502:physiology*