助産受精で移植する胚の数に関する意思決定における年齢の影響:将来的な研究
Debbie A Lawlor1, Scott M Nelson
1MRC Centre for Causal Analysis in Translational Epidemiology, School of Social and Community Medicine, University of Bristol, Bristol, UK.
Lancet (London, England)
|January 17, 2012
まとめ
選択型単一胚移植 (eSET) は,複数の出産を減らすために,体外受精 (IVF) を受けているすべての女性に推奨されます. 年齢は,胚移植の決定を導くべきであり,高齢の女性は,単体または二重の胚移植を慎重に検討することで利益を得ます.
科学分野:
- 生殖医学は,生殖器医学である.
- 産科は産婦人科です.
- ペリナトロジー (Perinatology) とは
背景:
- 選択的単一胚移植 (eSET) は,多胎児の発生と,インビトロ受精 (IVF) の後の不良結果を減らすことを目的としています.
- eSETと母親の年齢に関する最適な戦略は不明である.
研究 の 目的:
- 産後生児生育の結果が,母子の年齢と関連して移植された胚の数によって異なるかどうかを調査する.
- 活産,複数出産,低出生体重,早産の比率を比較するために,IVFを受けた若い女性 (<40歳) と高齢の女性 (≥40歳) の間で.
主な方法:
- イギリスのヒト受精および胚学機関 (Human Fertilisation and Embryology Authority) のデータに関する展望分析.
- 生産,複数出産,低出生体重 (<2.5kg),早産 (<37週),重度の早産 (<33週) の比率の比較.
- 相対リスクと絶対リスクの差を評価するために使用されるロジスティックおよび二項式回帰.
主要な成果:
- 2つの胚を1つの胚に変換する場合は,40歳以上の女性の生産率は高かったが,絶対リスクの上昇は若い女性よりも小さかった.
- 高齢の女性は,若い女性と比較して,複数出産,早産,低出生体重の確率比と絶対リスクの差が小さかった.
- 3つの胚の移植は生産率を増加させなかったが,不良な周産期の結果のリスクを高めた.
結論:
- 3つ以上の胚を移植することは,すべての年齢層において強く推奨されません.
- 胚移植の決定 (一対二の胚) は,母親の年齢などの予後要因を考慮する必要があります.
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