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ソノグラフィー:妊娠初期における二胞胎双子の生存率

Stephen Tong¹, Simon Meagher, Beverley Vollenhoven

¹Department of Obstetrics and Gynaecology, Monash University, Monash Medical Centre, Clayton, Victoria 3168, Australia.

|March 15, 2002

まとめ

双子の胎児の妊娠初期喪失は一般的です. 私たちの研究は,第2の卵を明らかにしています.

科学分野:

生殖生物学生殖生物学
人間の胚学
妊産婦と胎児の医学について

背景:

双子の妊娠中絶率が高いことが疑われています.
多くの双子の妊娠はシングルトン出産につながり,早期の損失を示唆しています.

研究の目的:

二重排卵後に第二の卵子が受精し,発達する確率を定量化するために.
一つの胚が双子の発達に影響を与えているかどうかを判断する.

主な方法:

二重排卵と受精を経験した女性を研究した.
第2コンセプトの受精率と発達率を評価した.

主要な成果:

2番目の卵子が受精して発達する可能性は20〜30%です.
この割合は,シングルコンセプトの受胎と生存に匹敵します.
1つの胚の存在は,その双子の発達を妨げないようである.

結論:

早期の双子の損失は,以前に示唆されたほど高くないかもしれません.
1つの双子の胚の発達は,その同胞胚に悪影響を及ぼさない.

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