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Early amniocentesis at 10-12 weeks' gestation
M Diaz Vega1, P De La Cueva, C Leal
1Clínica Ginecológica de Zaragoza, Spain.
Prenatal Diagnosis
|April 1, 1996
Summary
Genetic amniocentesis is safe and effective between 10-12 weeks of gestation. This early procedure offers benefits without increasing risks compared to later methods, ensuring accurate genetic screening for pregnant women.
Area of Science:
- Maternal-Fetal Medicine
- Prenatal Diagnosis
- Genetics
Background:
- Genetic amniocentesis is a common prenatal diagnostic procedure.
- Traditionally performed later in gestation, earlier options are being explored.
Purpose of the Study:
- To evaluate the safety and efficacy of genetic amniocentesis performed between 10-12 weeks of gestation.
- To compare outcomes with traditionally performed amniocentesis procedures.
Main Methods:
- 181 ultrasound-guided genetic amniocenteses were performed at 10-12 weeks gestation.
- Data collected included indications, technical issues, amniotic fluid volume, culture success/timing, and fetal loss rates.
Main Results:
- Amniotic fluid was obtained in 98.4% of cases, with successful first attempts in 167/181.
- Culture success rate was 94.5%, with a fetal loss rate of 0.5% within 2 weeks and 1.6% total.
- Outcomes showed no significant difference compared to amniocentesis at 12-14 weeks or 15+ weeks gestation.
Conclusions:
- Genetic amniocentesis at 10-12 weeks gestation is feasible, safe, and technically straightforward.
- This early procedure provides significant benefits for pregnant women.
- The safety and success rates are comparable to later amniocentesis procedures.