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Murine Fetal Echocardiography
Published on: February 15, 2013
First-trimester echogenic amniotic fluid in the acrania-anencephaly sequence
Daniel Cafici1, Waldo Sepulveda
1Ultrasound and Prenatal Diagnosis Unit, Ecodiagnostico Alem, Buenos Aires, Argentina.
Summary
Echogenic amniotic fluid was found in 89% of fetuses with acrania during the first trimester. This finding may serve as an early marker for fetal acrania, suggesting progressive brain destruction.
Area of Science:
- Prenatal diagnosis
- Fetal medicine
- Developmental biology
Background:
- Acrania is a severe congenital anomaly characterized by the absence of the cranial vault.
- Early detection of fetal anomalies is crucial for timely intervention and management.
- The transition from acrania to anencephaly is hypothesized to involve progressive brain destruction.
Purpose of the Study:
- To investigate the association between echogenic amniotic fluid and first-trimester fetal acrania.
- To evaluate echogenic amniotic fluid as a potential early marker for acrania.
Main Methods:
- Nine fetuses diagnosed with acrania were examined between 11 and 13 weeks 6 days' menstrual age.
- Amniotic fluid echogenicity was assessed and classified into three types based on the presence and density of echogenic particles.
- Comparison was made with extracelomic fluid echogenicity.
Main Results:
- Echogenic amniotic fluid was observed in 89% of fetuses with acrania.
- Type 1 echogenicity (slightly increased) was seen in 6 cases, with scattered particles.
- Type 2 echogenicity (clearly increased) was noted in 2 cases, with homogeneously echogenic fluid.
Conclusions:
- Echogenic amniotic fluid is a frequent finding in first-trimester fetal acrania.
- This sonographic finding may serve as a valuable early marker for fetal acrania.
- The results support the theory of progressive brain destruction in the transition from acrania to anencephaly.
