フォロト四重症の子供の右心房機能は,大動脈から肺へのシャントの前と後である
Circulation
|March 1, 1976
まとめ
フォロ患者のテトラロジーでは,右心室シストリック指数が低下し,特にヘモグロビン濃度が高く,慢性的な低酸素症による心室機能障害を示唆しています. 早期の手術は結果を改善する可能性があるが,シャントは重篤な症例には有益である.
科学分野:
- 心臓病学 心臓病学
- ペディアトリック・カルディオロジー
- 心臓外科手術について
背景:
- テトラロジー・オブ・ファロット (TOF) は,複雑な先天性心不全である.
- TOF患者における慢性性低酸素症は,心室機能に影響を与える可能性があります.
- 静脈の体積と機能を理解することは,治療の決定に不可欠です.
研究 の 目的:
- TOF患者における右心室と左心室の体積と機能を評価するために.
- 静脈の変数に対するヘモグロビン濃度の影響を調査する.
- 術前と術後の患者の心房機能を比較する.
主な方法:
- 心臓キャセテリゼーションは43人のTOF患者 (25人の手術前,18人のシャント後の患者) に実施されました.
- 静脈の体積は,二平面シネアニオカーディオグラム (Simpson's rule for RV, area-length for LV) を用いて計算された.
- ヘモグロビンレベルは,心室機能との相関関係について分析されました.
主要な成果:
- 術前の患者は,正常なRV終末ダイアストリックボリュームを示したが,RVシストリック指数が低下した,特にヘモグロビン≥16g%で.
- シャント後の患者でヘモグロビン16g%以上は,RVの終盤ダイアストリック体積とRVのシストリック指数が減少した.
- 左心室の体積と放出分子は,両群の右心室の変数と比較可能でしたが,RV放出分子はシャント後大幅に減少しました.
結論:
- TOF患者における心室排出分数の減少は,前負荷や後負荷ではなく,慢性的な低酸素による心室機能障害に起因する可能性があります.
- 早期の矯正手術は,心室機能障害を逆転させる可能性があります.
- シャント処置は,小心室の体積と出力が低下した重度のTOFの完全な矯正よりも有益である可能性があります.
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