母親の年齢と先天性欠陥:人口調査
P A Baird1, A D Sadovnick, I M Yee
1Department of Medical Genetics, University of British Columbia, Canada.
Lancet (London, England)
|March 2, 1991
まとめ
妊娠遅延は,原因不明のほとんどの出生障害と関連していません. この研究では,母親の年齢と特定の先天性疾患との間に有意な関連がほとんど見つかりませんでしたが,妊娠を遅らせている女性に安心感を与えました.
科学分野:
- 生殖器保健は,生殖器の健康についてです.
- 小児科は小児科です.
- エピデミオロジー エピデミオロジー
背景:
- 先進国における出産遅延の傾向は増加しています.
- 染色体異常とは無関係な先天性欠陥のリスクを評価する必要がある.
- これまでの研究は,母親の年齢と非染色体性出生障害を決定的に結びつけていない.
研究 の 目的:
- 母の年齢と,原因不明の先天性欠陥との関連を調査する.
- 妊娠を遅らせることで特定の先天性異常のリスクが増加するかどうかを判断する.
- 後期妊娠を選択する女性に対し,データに基づいた安心感を提供するためです.
主な方法:
- ブリティッシュ・コロンビアの出生記録をリンクした人口ベースの研究.
- 576,815人の生児から,原因不明の先天性欠陥を持つ26,859人の子供を含めた.
- 染色体異常や既知の病因の症例を除外し,43の出生欠陥カテゴリーの分析.
主要な成果:
- 43の出生欠陥のカテゴリーのうち,わずか3つのカテゴリーで,母親の年齢の有意な傾向が示されました.
- 特許ドクトゥス・アテリアスおよび高圧性ピロリック・ステノシスにおいて,母親の年齢とともに減少傾向が見られた.
- 生まれながらの脱位性股関節/股関節のクリックは,母親の年齢とともに鐘状の傾向を示した.
結論:
- 妊産婦の高齢化と,原因不明の出生障害の発生率との間には,全体的な関連性が見つかりませんでした.
- 特許ドクトゥス・アテリオサスやハイパートロフィックピロリック狭窄症のような特定の疾患は,母親の年齢が年をとるにつれて発症率が低下することを示しました.
- 研究結果は,妊娠を遅らせている健康な女性が,ほとんどの非染色体性出生障害のリスクについて安心できると示唆しています.
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