帝王切開分娩、吸引分娩、および第2期帝王切開分娩後の長期神経発達転帰
Maya Rajasingham1,2, Sarka Lisonkova3, Neda Razaz4
1Department of Obstetrics and Gynecology, Faculty of Health Sciences, McMaster University, Hamilton, Ontario, Canada.
JAMA network open
|January 30, 2026
まとめ
術後腟分娩および第2期帝王切開分娩(SSCD)は、小児の神経発達転帰と同様の関連が認められた。しかし、逐次器械分娩はADHD率が高く、吸引分娩はID率の上昇と関連していた。
科学分野:
- 小児神経発達転帰
- 産科婦人科
- 公衆衛生研究
背景:
- 過去の非交換可能な分娩様式間での神経発達転帰の比較研究は、臨床的有用性が限られていた。
- 分娩第2期における術後分娩が小児の神経発達に及ぼす影響を理解することは極めて重要である。
研究 の 目的:
- 分娩第2期における術後分娩と、小児における注意欠陥多動性障害(ADHD)、自閉スペクトラム症(ASD)、および知的障害(ID)との関連を調査する。
- 分娩様式のリスクを特定の神経発達転帰に対してより詳細に理解する。
主な方法:
- カナダの医療行政データ(ブリティッシュコロンビア州、2000~2019年)を利用した集団ベースの後ろ向きコホート研究。
- 非異常、単胎、正期産児50万人以上を含む。
- 分娩様式(自発性腟分娩、鉗子、吸引、逐次器械、第2期帝王切開分娩)および神経発達転帰(ADHD、ASD、ID)を22歳までCox回帰を用いて分析した。
主要な成果:
- 分娩様式と自閉スペクトラム症(ASD)との間に有意な関連は見られなかった。
- 逐次器械分娩は、第2期帝王切開分娩(SSCD)と比較して、注意欠陥多動性障害(ADHD)の発生率が13%高かった。
- 吸引分娩は、SSCDと比較して、知的障害(ID)の発生率が53%高かった。
結論:
- 術後腟分娩およびSSCDは、一般的に同等の神経発達転帰を示した。
- 特定の術後処置、すなわち逐次器械分娩および吸引分娩は、それぞれADHDおよびIDの発生率の上昇と関連していた。
- 分娩様式は、小児の神経発達障害の特定の危険因子であり、さらなる調査が必要である。
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