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Revista Brasileira de Ginecologia e Obstetrícia. 2016;38(9):436-442
Ventriculomegaly (VM) is one the most frequent anomalies detected on prenatal ultrasound. Magnetic resonance imaging (MRI) may enhance diagnostic accuracy and prediction of developmental outcome in newborns.
The aim of this study was to assess the correlation between ultrasound and MRI in fetuses with isolated mild and moderate VM. The secondary aim was to report the neurodevelopmental outcome at 4 years of age.
Fetuses with a prenatal ultrasound (brain scan) diagnosis of VM were identified over a 4-year period. Ventriculomegaly was defined as an atrial width of 10- 15 mm that was further divided as mild (10.1-12.0 mm) and moderate (12.1-15.0 mm). Fetuses with VM underwent antenatal as well as postnatal follow-ups by brain scan and MRI. Neurodevelopmental outcome was performed using the Griffiths Mental Development Scales and conducted, where indicated, until 4 years into the postnatal period.
Sixty-two fetuses were identified. Ventriculomegaly was bilateral in 58% of cases. A stable dilatation was seen in 45% of cases, progression was seen in 13%, and regression of VM was seen in 4.5% respectively. Fetal MRI was performed in 54 fetuses and was concordant with brain scan findings in 85% of cases. Abnormal neurodevelopmental outcomes were seen in 9.6% of cases.
Fetuses in whom a progression of VM is seen are at a higher risk of developing an abnormal neurodevelopmental outcome. Although brain scan and MRI are substantially in agreement in defining the grade of ventricular dilatation, a low correlation was seen in the evaluation of VM associated with central nervous system (CNS) or non-CNS abnormalities.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2016;38(9):436-442
Ventriculomegaly (VM) is one the most frequent anomalies detected on prenatal ultrasound. Magnetic resonance imaging (MRI) may enhance diagnostic accuracy and prediction of developmental outcome in newborns.
The aim of this study was to assess the correlation between ultrasound and MRI in fetuses with isolated mild and moderate VM. The secondary aim was to report the neurodevelopmental outcome at 4 years of age.
Fetuses with a prenatal ultrasound (brain scan) diagnosis of VM were identified over a 4-year period. Ventriculomegaly was defined as an atrial width of 10- 15 mm that was further divided as mild (10.1-12.0 mm) and moderate (12.1-15.0 mm). Fetuses with VM underwent antenatal as well as postnatal follow-ups by brain scan and MRI. Neurodevelopmental outcome was performed using the Griffiths Mental Development Scales and conducted, where indicated, until 4 years into the postnatal period.
Sixty-two fetuses were identified. Ventriculomegaly was bilateral in 58% of cases. A stable dilatation was seen in 45% of cases, progression was seen in 13%, and regression of VM was seen in 4.5% respectively. Fetal MRI was performed in 54 fetuses and was concordant with brain scan findings in 85% of cases. Abnormal neurodevelopmental outcomes were seen in 9.6% of cases.
Fetuses in whom a progression of VM is seen are at a higher risk of developing an abnormal neurodevelopmental outcome. Although brain scan and MRI are substantially in agreement in defining the grade of ventricular dilatation, a low correlation was seen in the evaluation of VM associated with central nervous system (CNS) or non-CNS abnormalities.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2001;23(5):277-282
DOI 10.1590/S0100-72032001000500002
Objective: to test the effectiveness of the polymerase chain reaction (PCR) in the amniotic fluid for the detection of fetal contamination due to Toxoplasma gondii in pregnant women with acute infection and to correlate it with the inoculation technique and the histology of the placenta. Methods: thirty-seven patients were prospectively studied and the diagnosis was based on the identification of maternal acute infection followed by amniocentesis guided by ultrasound to obtain amniotic fluid for PCR and mice inoculation. The mothers were treated with spiramycin throughout pregnancy; when fetal infection was demonstrated, pyrimethamine and sulfadiazine were added to the regimen. The placentas were processed for histologic examination. The infants were followed for a period that varied from three to 23 months for the confirmation or exclusion of congenital toxoplasmosis. Results: association measures such as sensitivity, specificity and predictive values were calculated for PCR in the amniotic fluid, detection of the parasite through mice inoculation and placental histology and showed the following results: PCR values of sensitivity = 66.7% and specificity = 87.1%; the respective values for mice inoculation were 50 and 100% and for the placental histology were 80 and 66.7%. Conclusion: although PCR should not be used alone for the prenatal diagnosis of congenital toxoplasmosis, it is a promising method and deserves more studies to improve its efficacy.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2001;23(5):277-282
DOI 10.1590/S0100-72032001000500002
Objective: to test the effectiveness of the polymerase chain reaction (PCR) in the amniotic fluid for the detection of fetal contamination due to Toxoplasma gondii in pregnant women with acute infection and to correlate it with the inoculation technique and the histology of the placenta. Methods: thirty-seven patients were prospectively studied and the diagnosis was based on the identification of maternal acute infection followed by amniocentesis guided by ultrasound to obtain amniotic fluid for PCR and mice inoculation. The mothers were treated with spiramycin throughout pregnancy; when fetal infection was demonstrated, pyrimethamine and sulfadiazine were added to the regimen. The placentas were processed for histologic examination. The infants were followed for a period that varied from three to 23 months for the confirmation or exclusion of congenital toxoplasmosis. Results: association measures such as sensitivity, specificity and predictive values were calculated for PCR in the amniotic fluid, detection of the parasite through mice inoculation and placental histology and showed the following results: PCR values of sensitivity = 66.7% and specificity = 87.1%; the respective values for mice inoculation were 50 and 100% and for the placental histology were 80 and 66.7%. Conclusion: although PCR should not be used alone for the prenatal diagnosis of congenital toxoplasmosis, it is a promising method and deserves more studies to improve its efficacy.