- Definitive, second trimester Antenatal Screening for fetal chromosomal abnormalities
-
Antenatal Screening for fetal chromosomal abnormalities for high risk pregnancies
- Timing
- Safest time period: 16-18 weeks gestation
- Range of sampling time: 14-20 weeks gestation
- Technique
- Amniotic fluid sampled transabdominally under Ultrasound guidance
- Pregnancy loss (0.3 to 1% risk)
- Vaginal spotting
- Amniotic fluid leak
-
Chorioamnionitis
- Fetal injury from Amniocentesis needle
- Failed procedure in which fetal cells in amniotic fluid do not grow in culture
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