title: [Increase S/D ratio in uterine artery as a predictor for preeclampsia in adolescent patients].
abstract: BACKGROUND
  Pregnancy during adolescence has been rising in the past years, and it is well known that preeclampsia affects teenagers, because maternal age and primigravida are risk factors. There are different ways and methods to predict preeclampsia, for example doppler velocimetry.
  
  
  OBJECTIVE
  Determine S/D ratio of uterine artery in pregnant teenagers between 24-28 weeks and correlation with preeclampsia.
  
  
  METHODS
  Observational study in 50 pregnant teenagers (14-19 years) obtaining uterine artery waveform at 24-28 weeks gestation recording S/D ratio.
  
  
  RESULTS
  Sensitivity and specificity of 90% with a positive predictive value of 69.23% and negative predictive value of 97.3%. 13 patients had S/D ratio greater than 2.6, of which 5 had gestational hypertension, 3 with preeclampsia, 1 with Fetal Growth Restriction, 4 with normal pregnancy. Relative Risk was 25.62 (3.58-183.13) with odds ratio of 81.00 (6.83-2260.88) and p value 0.00002.
  
  
  CONCLUSIONS
  analysis of uterine artery flow velocity waveforms is a method to predict preeclampsia.
authors.forename: Oscar
authors.initials: O
authors.lastname: Salcido-Rivera
authors.forename: Oscar
authors.initials: O
authors.lastname: Aguirre-Barrera
authors.forename: Irving
authors.initials: I
authors.lastname: Zúñiga-Galaviz
authors.forename: Jesús Enrique
authors.initials: JE
authors.lastname: Bustillos Valdez
authors.forename: Norma Patricia
authors.initials: NP
authors.lastname: Ramos González
mesh_terms: D000293:Adolescent; D001783:Blood Flow Velocity; D005260:Female; D005317:Fetal Growth Retardation / Q000175:diagnosis* / Q000503:physiopathology; D006801:Humans; D046110:Hypertension, Pregnancy-Induced / Q000175:diagnosis* / Q000503:physiopathology; D017078:Laser-Doppler Flowmetry; D008423:Maternal Age; D011225:Pre-Eclampsia / Q000175:diagnosis* / Q000503:physiopathology; D011237:Predictive Value of Tests; D011247:Pregnancy; D011446:Prospective Studies; D012307:Risk Factors; D012680:Sensitivity and Specificity; D055988:Uterine Artery / Q000378:metabolism*; D055815:Young Adult