病理生理学的疾患のパターンと,選択的な皮膚貫通性冠動脈介入後の絶対冠動脈流速の増加との関連
Hikaru Shimosato1, Eisuke Usui1, Yoshihisa Kanaji1
1Cardiovascular Medicine, Tsuchiura Kyodo General Hospital, Tsuchiura, Japan.
まとめ
量的な流量比推移圧力グラデーション (QFR-PPG) インデックスは,分量流量リザーブ (FFR) とストレストランストラシックドップラー心拍 (S-TDE) とともに,皮膚経冠動脈干渉 (PCI) の後の冠動脈流の改善を予測します. この非侵襲的な方法は,PCIの決定を最適化するのに役立ちます.
科学分野:
- 心血管医学
- 介入心臓科
- 診断用イメージング
背景:
- 皮膚経冠動脈介入 (PCI) は血流の回復を目的としていますが,PCI後の絶対的な血流の改善を予測することは依然として困難です.
- 断片流量リザーブ (FFR) はPCIを導くが,病変パターン (焦点対拡散) は結果に影響する.
- 定量流量比 (QFR) 導出プルバック圧力グラデーション (PPG) は,冠動脈損傷を特徴付けるための無線方法を提供します.
研究 の 目的:
- PCI前 QFR-PPGインデックスは,選択PCI後の絶対冠動脈流速の改善を予測するかどうかを判断する.
- PCI後の流れ速度の変化を測定するS-TDEの有用性を評価する.
主な方法:
- S- TDEによるPCI前およびPCI後のLAD流量評価による選択的なFFR誘導PCIを受けた118人の患者の遡及的分析.
- PCI前 QFR-PPGインデックスの計算で,PCI後の冠動脈の流れの変化との関連を評価する.
- UMIN000056097に登録された機関QFR-PPGデータベースを使用しました.
主要な成果:
- 81. 3% の患者で改善され,FFRの改善にもかかわらず18. 6% の患者で値が低下した.
- より大きなhDPV改善 (> 30%) は,PCI前FFRの低下,PCI前hDPVの低下,およびQFR- PPG指数の上昇と関連していました.
- QFR-PPG指数,FFR,hDPVはフロー改善の独立した予測指標として特定され,QFR-PPGはインクリメンタル値を示した.
結論:
- PCI前 QFR-PPGインデックスは,FFRとS-TDE由来のhDPVと組み合わせて,PCI後の絶対フローの改善を効果的に予測します.
- この非侵襲的,ワイヤフリーなQFR-PPGアプローチは,介入性心臓病における再血管化の意思決定を強化する可能性があります.
- QFR-PPGのさらなる検証は,PCI結果の予測に必要である.
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