大動脈の転移の乳児における動脈スイッチ手術の年齢,脳の成長,および発達との関連
Jessie Mei Lim1, Prashob Porayette2, Davide Marini2
1Department of Physiology (J.M.L.), University of Toronto, Canada.
Circulation
|May 29, 2019
まとめ
大動脈の転移で手術を受けた乳児は 生後2週間後に脳の成長が低下し 言語の発達が遅くなった. これらの発見は 最適な神経発達のための早期の手術の重要性を強調しています
科学分野:
- 小児心臓科
- 神経発達小児科
- 生まれつき の 心臓 病
背景:
- 大動脈の転移 (TGA) は,脳損傷,脳の成長障害,および神経発達の問題の重大なリスクと関連しています.
- TGAの乳児のアウトカムを改善するために,臨床的危険因子の早期発見は極めて重要です.
研究 の 目的:
- 動脈切断手術を受けたTGAの乳児における脳損傷と脳の発達障害の臨床的危険因子を特定する.
- これらの要因と18ヶ月の神経発達の結果の関係を調べる.
主な方法:
- 磁気共鳴画像 (MRI) を用いて,手術前と手術後の45人の乳児の脳損傷と体積を評価した.
- 脳体重のzスコアを計算し,18ヶ月でベイリーIIIスコアを使用して神経発達を評価した.
- 統計的分析では,臨床的変数,脳指標,神経発達スコアとの相関が調査されました.
主要な成果:
- 脳損傷の有意な臨床的リスク要因は特定されず,ほとんどの乳児の脳体重のzスコアは手術前減少した.
- 静脈隔膜の欠陥と手術時の高齢化が脳の成長障害と関連していた.
- 生後2週間で修復を受けた乳児は 術後の脳の成長が著しく低下し 言語のスコアも低下しました
結論:
- TGAの手術による修復が遅れた (生後2週間以上) は,脳の成長と言語の発達に障害が伴う.
- 潜在的メカニズムには,脳発達に影響を与える長期サイアノシスと肺循環過剰が含まれます.
- 早期の手術はTGAの乳児の神経発達を最適化するために重要です.
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