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早産児における1分対3分での遅延臍帯クランプ(DCC)- 無作為化比較試験のオープンラベル
Ashadur Zamal1, Rajib Losan Bora2, Sambhunath Bandyopadhyay3
1Department of Neonatology, IPGME&R and SSKM Hospital, Kolkata, West Bengal, India.
European journal of pediatrics
|February 6, 2026
まとめ
早産児において臍帯クランプを3分間遅延させることは、新生児の血圧とヘマトクリット値を著しく改善する。この3分間の遅延臍帯クランプ(DCC)は、早産児にとって有益な胎盤輸血戦略である。
科学分野:
- 新生児医学; 小児科学; 産科学
背景:
- 遅延臍帯クランプ(DCC)は元気な新生児に推奨されているが、最適な時期は不明である。; 特に早産児に対するDCCの効果的な期間に関する研究は限られている。; 現在のガイドラインでは、DCCの正確な期間に関して統一性が欠けている。
研究 の 目的:
- 早産児における血液学的および血行動態パラメータに対する1分対3分DCCの効果を比較すること。; 静脈ヘマトクリット値、血圧、新生児罹患率に対するDCC期間の影響を評価すること。; 在胎30~36週6日の早産児におけるDCCの最適な時期を決定すること。
主な方法:
- 在胎30~36週6日の早産児304名を対象とした層別無作為化比較試験。; 患者は1:1の比率で1分DCCまたは3分DCCのいずれかに割り付けられた。; 主要評価項目:48時間後の静脈ヘマトクリット値。副次評価項目:移行期の血圧、6週後のヘマトクリット値およびフェリチン値、新生児罹患率。
主要な成果:
- 3分DCC群では、48時間後の平均静脈ヘマトクリット値が有意に高かった(43.18% vs 41.02%)。; 3分DCC群では、移行期中の平均血圧の上昇と、12時間および6週後の平均ヘマトクリット値の上昇が観察された。; 光線療法や症候性多血症などの新生児罹患率には、群間に有意差は認められなかった。
結論:
- 臍帯クランプを3分間遅延させることは、早産児の血圧を改善し、静脈ヘマトクリット値を増加させる。; 3分DCCは、早産児にとって実行可能で効果的な胎盤輸血技術であると考えられる。; 3分DCCの有効性と安全性を確認するためには、さらなる大規模多施設共同研究が必要である。
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