三次元エコーカルディオグラフィー分析のミトラリングラーダイナミクス:アンヌロプラスティの選択への影響
Melissa M Levack1, Arminder S Jassar, Eric K Shang
1Gorman Cardiovascular Research Group, Glenolden, PA 19036, USA.
Circulation
|September 12, 2012
まとめ
ミトラの環状動態は,不全性およびミクソマトス性ミトラ吐症の患者で損なわれています. これは,柔軟なアンヌロプラスティのリングは,ミトラ弁の修復中に正常な環状機能を回復しない可能性があることを示唆しています.
科学分野:
- 心血管研究に関する研究.
- 心臓外科手術は心臓外科手術である.
- エコーカルディオグラフィー エコーカルディオグラフィー
背景:
- 柔軟なアンヌロプラスティックリングは,ミトラルの環状の動態を維持することを目的としています.
- これは,ミトラル弁の修復を受けている患者の正常な環状運動を前提としています.
- この研究では,特定のミトラル反吐型におけるミトラル環状の動態を調査しています.
研究 の 目的:
- ミトラルの環状動態が,不全性およびミクロマトスのミトラル反発で損なわれるという仮説を検証する.
- これらの状態がミトラアヌルスの解剖学と運動に与える影響を評価する.
主な方法:
- リアルタイムの3D食道横断エコーカルディオグラフィーは,11人の正常な被験者,11人の不全性ミトラル吐症,11人のミクロマトスミトラル吐症の被験者に対して使用されました.
- 画像分析は,ダイナミクスを評価するために半自動リングラトラッキングを使用しました.
- パラメータは,均一なシストリックおよびダイアストリック期間のために正常化されました.
主要な成果:
- 缺血性およびミクソマトス性ミトラルリグルジテーションアヌーリは,通常のアヌーリと比較して,ミッドシストリック領域において有意に大きかった.
- 発血性ミトラルリグルジテーションアヌリは,対照群と比較して,動態が低下したことを示した.
- ミクソマトス・ミトラル・リグルジテーション・アヌーリ (Myxomatous mitral regurgitation annuli) は,シストルの初期に異常な膨張を示した.
結論:
- ミトラの環状動力学と解剖学は,不全性およびミクソマト性ミトラ反吐の両方で異常です.
- 柔軟なアンヌロプラスティ装置は,これらの条件下で正常な環状動力学や解剖学を回復する可能性は低い.
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