ABSTRACT
OBJECTIVE: To determine the value of routine transvaginal color Doppler assessment of the uterine arteries at 22-24 weeks of gestation in the prediction of placental insufficiency. METHODS: Women with singleton pregnancies scheduled for routine ultrasound scans at 22-24 weeks were offered Doppler assessment of the uterine arteries by transvaginal ultrasound. The pulsatility index (PI) was obtained for each artery and the mean value was calculated. A mean PI >95th percentile was considered increased. Screening characteristics for predicting placental insufficiency, defined as preeclampsia, fetal growth restriction or intrauterine death, were calculated. RESULTS: Doppler examination of the uterine arteries was carried out in 1,057 singleton pregnancies. The mean uterine artery PI was 1.03 and the 95th percentile was 1.55. In 54 cases (5.1%) the mean PI was >1.55 (screen-positive). In the study population there were 48 cases of preeclampsia (5.1%), 72 fetal growth restrictions (7.5%) and 7 intrauterine deaths (0.7%). The screen-positive group showed an incidence of 47.1% of combined adverse results. The relative risks after a positive screening test were 7.3 (CI 4.2-12.6) for pre-eclampsia, 3.9 (CI 2.3 - 6.6) for fetal growth restriction and 4.5 (CI 3.2-6.4) for overall placental insufficiency. CONCLUSIONS: Uterine artery Doppler at 22-24 weeks identifies women at higher risk for the development of subsequent complications of placental insufficiency. This test could be used in combination with other markers to stratify the level of care offered in the third trimester of pregnancy.
Subject(s)
Placental Insufficiency/diagnostic imaging , Ultrasonography, Doppler, Color/methods , Ultrasonography, Doppler, Color/standards , Uterus/blood supply , Adolescent , Adult , Area Under Curve , Arteries/diagnostic imaging , False Positive Reactions , Female , Fetal Death/diagnostic imaging , Fetal Growth Retardation/diagnostic imaging , Gestational Age , Humans , Middle Aged , Pre-Eclampsia/diagnostic imaging , Predictive Value of Tests , Pregnancy , Reproducibility of Results , Sensitivity and Specificity , Vagina , Young AdultABSTRACT
A audiçäo é o principal sentido, responsável pela aquisiçäo da linguagem e aqueles que säo privados dela tem prejuizo na sua interaçäo com o mundo. Estima-se que só a rubéola congênita responda por 5 a 10 por cento das causas de surdez neurossensorial em geral porém, devido à dificuldade de diagnótico e de notificaçä o às Secretarias de Saúde, näo se tem uma incidência confiável. Viemos por meio deste trabalho, alertar sobre o papel da surdez causada por rubéola congênita na incidência das hipoacusias congênitas em geral, e propor medidas para prevení-la. Existem evidências de que a perda auditiva seja o defeito mais comum em crianças infectadas congenitamente pela rubéola. Como prevençäo primária, propöe-se a vacinaçäo com vacina tríplice viral (contra sarampo, caxumba e rubéola) ou com vacina anti-rubeóla em todas as crianças e mulheres, respectivamente. Em caso de näo imunizaçäo é importante acompanhar todas as gestantes para o diagnóstico precoce, fazendo a detecçäo atravées da titulaçäo de anticorpos para rubéola na mäe e no recém-nascido. Quanto mais precoce a suspeita de surdez na criança, menor será o dano no desenvolvimento da linguagem, pois mais cedo será feita a protetizaçäo
