中国の母親における分娩後早期の乳汁生成遅延のリスク因子:前向きコホート研究
Yuan Deng1, Mei-Jun Guan1, Shao-Chuan Chen1
1University of Electronic Science and Technology of China, Chengdu, China.
まとめ
中国の母親の23.6%に影響を与える乳汁生成遅延は、妊娠糖尿病および帝王切開と関連していた。これらのケースでは、産後48時間以内の乳糖濃度が低下していた。
科学分野:
- ヒト授乳研究
- 母子栄養
- 公衆衛生疫学
背景:
- 乳汁生成IIの確立されたリスク因子は存在するが、産後早期のマクロ栄養素組成に対する動的な影響は不明瞭なままである。
- 乳汁生成のタイミングと母乳組成の関係に対する修正可能な要因の影響は、さらなる調査が必要である。
研究 の 目的:
- 中国の集団における乳汁生成遅延の既知のリスク因子の妥当性を検証する。
- 産後72時間以内の母乳マクロ栄養素(乳糖、脂肪、タンパク質)の経時的変化を特徴づける。
- 妊娠糖尿病などの修正可能な要因が、早期の母乳組成に与える影響を評価する。
主な方法:
- 中国の360人の参加者を対象とした前向きコホート研究。
- 産後24時間間隔での母親の自己申告による乳汁生成開始の決定。
- 産後24時間、48時間、72時間での母乳サンプルのマクロ栄養素含有量の分析。
主要な成果:
- 乳汁生成遅延は参加者の23.6%に発生し、妊娠糖尿病、帝王切開、および妊娠前BMIが25.0 kg/m²以上と有意に関連していた。
- 乳汁生成遅延群では、産後24時間および48時間において乳糖濃度が低かった(それぞれp < 0.001およびp = 0.04)。
- 妊娠糖尿病は、産後24時間における乳糖濃度の有意な低下と関連していた(p = 0.002)。
結論:
- 研究対象となった中国の集団において、乳汁生成遅延の既知のリスク因子が確認された。
- 経時的な乳糖欠乏が主な発見であり、産後早期の母乳中の乳糖濃度のモニタリングの必要性を強調する。
- 妊娠糖尿病などのリスク因子を持つ母親、特に産後48時間以内の乳糖濃度の早期モニタリングが推奨される。
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