Accuracy of supervised measurement of fetal weight in a residency program.

Objectives: To evaluate the accuracy of ultrasound estimates of fetal weight made by residents.

Methods: A cross-sectional study was conducted on consecutive pregnancies attended in an obstetric ward. All participants provided their consent to participate.

Definition of normal blood pressure at 11 to 14 weeks' gestation according to risk.

Objective: To define normal blood pressure at first trimester of pregnancy by performance for pre-eclampsia prediction.

Method: A cohort study in singleton pregnancies, according to the competing risks model for pre-eclampsia. Blood pressure was measured according to a standardized method at 11 to 14 weeks' gestation.

Reference values for uterine artery mean pulsatility index throughout pregnancy customized by parity, transvaginal measurement and blood pressure.

Introduction: Population-specific reference ranges for uterine artery (UtA) mean pulsatility index (PI) throughout pregnancy have been shown to be of value in antenatal care.

Objective: To construct reference values for UtA mean PI throughout pregnancy, customized by maternal characteristics, transvaginal measurement and blood pressure in a Mexican population.

Methods: Cross-sectional study in 2286 normal singleton pregnancies in Mexico City.

Validation of a preeclampsia early screening test in a Mexican population.

Background: No preeclampsia screening test has been validated in our country.

Objective: To assess the fit and performance of the FMF 4.0 Bayesian algorithm in a Mexican population.

Presión arterial en embarazos normales de la Ciudad de México.

Objective: To determine the normal blood pressure (BP) in pregnancy, Mexico City.

Methods: A cross-sectional observational study was carried out of BP on singleton normal pregnancies in Mexico City. Measurements followed a standardised methodology using automated electronic devices.

[Prenatal screening for anueploidies in the first trimester: Audit to a Fetal Medicine Centre with specialized Laboratory in Mexico].

Background: Screening for aneuploidies using ultrasound and biochemical first trimester markers has an expected performance if the qualification requirements are fulfilled.

Objective: To describe the first trimester markers in Mexico through the audit to a Fetal Medicine Centre and Laboratory.

Material And Method: Descriptive study conducted with the audit method of ultrasound and biochemical markers in pregnancies that prenatal screening tests in the first quarter were made between 11 + 1 and 14 + 1 weeks pregnant patients who came to the Laboratorio del Centro Médico para Atención Fetal Especializada.

[Causes of preterm delivery among adolescent mothers].

Objective: To describe the proportion of preterm delivery at pregnant adolescents clinic and their maternal, obstetric and fetal conditions other than spontaneous labor.

Patients And Method: Descriptive inside a cohort of consecutive cases. Preterm was defined from 20 to 36 full weeks.

[Analysis of the perinatal results of the first five years of the functioning of a clinic for pregnant teenagers].

Objective: To evaluate the perinatal outcomes within a pregnant cohort of adolescents aged 16 years and younger.

Patients And Methods: Case review prospective study. All pregnant adolescents who attended to the Coordination for assistance of the adolescent patient from June 1998 to July 2003 were included.

[Perinatal implications of pregnancy in adolescent women].

Objective: To establish if there are differences on obstetric and perinatal outcomes between adolescents who are younger than 16 with young adults aging 20 to 24 years old.

Patients And Method: A double-cohort prospective and comparative study in 328 Mexican pregnant women. Cohort I included 153 pregnant adolescents younger than 16 years old and cohort II included 175 young adults aging 20 to 24 years old.

[Quantification of perinatal risk in Mexican adolescents: consequences of maternal low weight].

Objective: To determine whether a pregnant adolescent whose weight-for-age is less than 90% is on the risk of delivering a baby who is small for gestational age.

Patients And Method: Six hundred and one adolescents aged 12-16 years, at 40 weeks of gestation were included. Body weight was measured at baseline with Mexican reference tables.