title: [Color Doppler of the utero placental territory and its relationship with the placental localization: normal and elevated resistance groups].
abstract: Forty two pregnancies of gestational age between 20 and 40 weeks were studied, 26 with normal uterine artery resistance; Group A, and 16 with elevated UA resistance; Group B. Three categories of placental location were established: Type I; central, Type II; partially lateralized including uterine midline, Type III; completely lateralized not including uterine midline. A Diasonic doppler duplex color equipment was used to assess the systole/diastole ratio (s/d ratio). Five different pints of the uteroplacental vascular territory were evaluated in each patient; right and left bottom uterine artery (cervico ithsmical union), right and left top UA (laterally outstanding point of the uterine wall), and inter villous space. The results were analyzed with Statview (Macintosh) statistics software. Placental Type II, prevailed on Group A, Type III prevailed on Group B, Types II and III were predominantly located on the right side of the uterus. S/D ratio was higher in Group B than in Group A in all five sites. S/D rel was higher on left side than on right side measurements. On Group B, left placental side patients had significantly higher s/d rel on non placental uterine artery than right placental side patients. When one altered uterine Doppler flow value is found, all the uteroplacental vascular territory show a high resistance patterns. The lateral placental location patterns tend to express higher resistance values. Right lateral placental locations have even higher resistance values than left ones. The placental location classification is suggested as a screening method for detecting the group of patients in risk of having altered values of Uterine Doppler Flow Velocimetry.
authors.affiliation: Departamento de Obstetricia y Ginecología, Hospital Clínico J. J. Aguirre, Universidad de Chile.
authors.forename: S
authors.initials: S
authors.lastname: Leible
authors.forename: J
authors.initials: J
authors.lastname: Jankelevich
authors.forename: H
authors.initials: H
authors.lastname: Muñoz
authors.forename: J
authors.initials: J
authors.lastname: Hasbún
authors.forename: A
authors.initials: A
authors.lastname: Huneeus
mesh_terms: D001783:Blood Flow Velocity; D005260:Female; D006801:Humans; D010920:Placenta / Q000098:blood supply / Q000000981:diagnostic imaging*; D021041:Placental Circulation / Q000502:physiology*; D011247:Pregnancy; D018616:Ultrasonography, Doppler, Duplex; D014599:Uterus / Q000000981:diagnostic imaging; D014655:Vascular Resistance / Q000502:physiology*
vernacular_title: Doppler color del territorio útero-placentario y su relación con la ubicación placentaria: grupos de resistencia normal y elevada.