A retrospective descriptive study is conducted at the San Juan de Dios Hospital, San José, Costa Rica, during the period from February 2016 to March 2017, with a total of 37 patients from which a combined screening during the first trimester of pregnancy was conducted, evaluating maternal age, biochemical and sonographic methods that together can predict the risk of fetal chromosomal alterations during pregnancy. The purpose of using combined screening as a noninvasive method is to identify high risk gestations and to minimize the number of invasive procedures to detect the highest number of cases. Four patients with higher risk of aneuploidy during pregnancy were identified through this screening.
Se realiza un estudio retrospectivo descriptivo en el Hospital San Juan de Dios, San José, Costa Rica, durante el periodo de febrero 2016 a marzo 2017, con un total de 37 pacientes a las cuales se les realiza tamizaje combinado en el primer trimestre de embarazo, dentro del cual se evalúan las variables de edad materna, métodos bioquímicos y ecográficos que puedan predecir en conjunto el riesgo de alteraciones cromosómicas fetales en el embarazo. Utilizando el tamizaje combinado como método no invasivo se pretende identificar las gestaciones de alto riesgo, realizando así un número mínimo de procedimientos invasivos para detectar el mayor número de casos.Mediante éste tamizaje se identifican cuatro pacientes con alto riesgo de presentar aneuploidía en el embarazo.
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