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脳脂肪栓のトランスクレニアルドップラー検出とパラドックス性栓塞との関係:パイロット研究
Alejandro M Forteza1, Sebastian Koch, Iszet Campo-Bustillo
1Cardiac and Stroke Institute, Jackson Memorial Hospital, University of Miami Miller School of Medicine, FL, USA. aforteza@med.miami.edu
Circulation
|April 27, 2011
まとめ
脂肪栓塞症候群は,長い骨折後の神経学的問題によって特徴付けられており,右から左へのシャント (RLS) に関連しています. トランスクラニアル・ドップラー検査は,マイクロエボリック信号を検出し,RLSの骨折患者の神経学的症状を予測します.
科学分野:
- 神経学 神経学とは
- 血管外科 血管外科
- トラウマ・外科・外科
背景:
- 脂肪栓塞症候群 (FES) は,呼吸不全,ペテキア,神経機能障害を伴う.
- FESは主に長い骨の骨折と,骨髄脂肪の全身循環と関連しています.
- 心臓内右から左へのシャント (RLS) は,より大きな脂肪粒子が全身循環に通過するのを容易にすることができます.
研究 の 目的:
- 股関節骨折の患者でトランスクレニアルドップラー (TCD) で検出されたRLSとマイクロエンボリックシグナルとの関係を調査する.
- FESにおける神経学的症状の発生に対するRLSとマイクロエンボリック信号の予測価値を評価する.
主な方法:
- 股関節骨折を患った42人の患者を対象とした前向きな研究.
- RLSの評価は,エコーカルディオグラフィーと,エンボルス検出による毎日のTCDを用いて行われます.
- FESの症状を評価するための神経学的検査.
主要な成果:
- 42人の患者のうち14人がRLSを検出した.
- 7人の患者が神経学的症状を発症し,すべてRLSが陽性であった (P<0.001).
- RLSの患者は,マイクロエボリックシグナルの数値と強度 (P<0.05,P<0.01) が著しく高かった.
- RLS+患者の高いマイクロエボリック信号数/強度は,神経学的症状を強く予測した (OR 204,P<0.001).
結論:
- 長い骨の骨折患者のRLSの存在は,脳のマイクロエンボリック信号が増加し,より大きくなるものと関連しています.
- RLS+患者におけるマイクロエンボリックシグナルのトランスクラニアルドップラー検出は,神経学的症状の発達を予測することができます.
- RLSは,長い骨の骨折後の神経学的FESの病原性において重要な要因です.
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