5歳未満の小児における機械的ミトラル弁置換後の義肢生存,成長,機能状態の予測要因,多機関研究
Geetha Raghuveer1, Christopher A Caldarone, Christine B Hills
1Department of Pediatrics, University of Kansas Medical Center, 3901, Rainbow Blvd., Kansas City, KS 66160, USA. graghuveer@kumc.edu
Circulation
|September 13, 2003
まとめ
小児 (5歳未満) の機械的ミトラル弁置換 (MVR) は,年齢と義肢サイズに基づいて予測可能な生存率を示しています. ほとんどの子どもは,体機能状態が良好であり,体内成長は,繰り返しMVRによって影響を受けません.
科学分野:
- ペディアトリック・カルディオロジー
- 心血管外科手術についてです.
- バイオマテリアル科学 バイオマテリアル科学
背景:
- 5歳未満の小児におけるメカニカル・ミトラルバルブ置換 (MVR) の結果は十分に確立されていません.
- 義肢の生存,体的成長,機能的状態などの重要な要因は,さらに定義する必要があります.
研究 の 目的:
- 5歳未満の子供における初期MVR後の長期義肢生存,体的成長,機能的状態を分析する.
- 2回目のMVRの必要性に関連したリスク要因を特定する.
主な方法:
- Pediatric Cardiac Care Consortiumから初回MVR (1982-1999) を受けた102人の子供の遡及分析. 小児心臓ケアコンソーシアムから.
- 追跡期間の中央は6.0年,完了率は96%でした.
- 2回目のMVRを必要とする患者 (n=29) と,MVRを必要としない患者 (n=73) の比較は,人口統計学的および外科手術後の変数を用いて行われました.
主要な成果:
- プロテスの生存率は,初期MVR年齢 (OR 7.7) とプロテスのサイズ (OR 6.8) によって予測されました.
- 高リスク患者 (年齢2歳未満,義肢20mm未満) は,第2回MVRが必要になるリスクが46.3倍増加しました.
- ソマティック・成長はグループごとに似ていたが,第2のMVR患者は,より小さな初期義肢を受け取った.
- 患者の76%は,MVR後のニューヨーク心臓協会 (NYHA) のクラス1機能状態でした.
結論:
- 初期MVRの年齢と義肢のサイズは,小児患者の義肢生存の重要な予測要因です.
- 機械的なミトラル弁置換は,幼い子供の再手術のリスクが増加しているにもかかわらず,幼い子供では実行可能な戦略です.
- 継続的な環状の成長は,第二のMVRで義肢のサイズが大きくなり,機能的な結果は一般的に好ましいことを示唆しています.
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