妊娠年齢で小さい,妊娠年齢で平均,妊娠年齢で大きい新生児の体重予測
Stephanie Masters1, Nneoma Edokobi1, Chloe Lessard1
1Carilion Clinic, Roanoke, Virginia, United States.
American journal of perinatology
|August 25, 2025
まとめ
妊娠調整プロジェクション (GAP) モデルは,妊婦のBMIが高く,妊娠年齢に適した新生児の出生体重を正確に予測します. この予測モデルは リスクの高い妊娠に 潜在的価値をもたらします
科学分野:
- 生理学
- 妊婦と胎児の医療
- 新生児の超音波検査
背景:
- 胎児の体重の正確な推定は,妊娠と新生児の結果の管理に不可欠です.
- 伝統的な方法は,出産に近い静的な見積もりに依存し,その精度が欠けることがあります.
- Gestation-Adjusted Projection (GAP) モデルは,よりダイナミックな予測のためにパーセンチルベースのエクストラポレーションを使用する新しいアプローチを提供します.
研究 の 目的:
- 小さい (SGA),適切な (AGA),または妊娠年齢に対して大きい (LGA) と分類された新生児の出生体重を予測するためのGAP前向き投影モデルの正確性を評価する.
- GAPモデルの予測の正確性に対する母親の体重指数 (BMI) の上昇の影響を評価する.
主な方法:
- 2016年から2023年の間に生後28週後に産んだ生後1人,生児,非異常妊娠の遡及的レビュー.
- 含める基準は,妊娠中期の成長超音波と妊娠中期の解剖学的調査が必要でした.
- GAPの予測精度は,実際の10%以内の出生体重の予測として定義され,パーセントの誤差と絶対パーセントの誤差も分析された.
主要な成果:
- GAPモデルの絶対誤差のミディアンは8.56%でした.
- 予測精度は,母親のBMIによって10%の範囲で変化した: 51. 4% (正常), 64. 1% (過体重), 58. 0% (肥満) (p=0. 031).
- AGAの64. 8%,SGAの29. 9%,LGAの66. 9% (p<0. 001) の乳児で10%以内の精度を達成し,SGAの乳児はしばしば過小評価された.
結論:
- GAPモデルは,妊婦のBMIが上昇した妊娠において,より高い精度を示しています.
- このモデルはLGAとAGAの乳児に対して同様の精度を示していますが,SGAの予測には困難です.
- 肥満やLGAの疑いのある人々を含む高リスク集団におけるGAPモデルの有用性を示唆しています.
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