ドブタミン輸液中の冠動脈疾患のエコーカルディオグラフィの検出
S G Sawada1, D S Segar, T Ryan
1Department of Medicine, Indiana University School of Medicine, Indianapolis.
Circulation
|May 1, 1991
まとめ
ドブタミンストレスエコーカルディオグラフィは,冠動脈疾患 (CAD) を検出するための安全で正確な方法です. この診断ツールは,有意なCADを効果的に特定し,異常な休息時のエコーカルディオグラムを持つ患者でも,その程度を予測します.
科学分野:
- 心臓病学 心臓病学
- 診断用イメージング
- 非侵襲的な心臓検査
背景:
- ドブタミン注入中の二次元エコーカルディオグラフィは,冠動脈疾患 (CAD) を検出するための提案された方法です.
- CAD検出のためのドブタミンストレスエコーカルディオグラフィ (DSE) の安全性と診断価値は,まだ確立されていない.
研究 の 目的:
- 冠動脈疾患の検出のためのドブタミンストレスエコーカルディオグラフィの安全性と診断精度を評価する.
- DSEのCADの程度を予測する能力を評価するため,特にベースラインの壁運動異常を有する患者の場合.
主な方法:
- 103人の患者がDSEを受け,ドブタミン注入を段階的に30マイクログラム/キログラム/分まで行いました.
- エコカルジオグラムは,休息とストレスの画像を同時に分析するためにデジタルに保存されました.
- 新しい地域壁運動異常の発生がエンドポイントとして用いられ,比較のために定量冠動脈血管図を用いた.
主要な成果:
- DSEは,重大な冠動脈疾患 (≥50%の狭窄) の検出に高い感度 (89%) と特異性 (85%) を示しました.
- 敏感度は,単血管疾患では81%であり,多血管疾患または左主疾患では100%でした.
- 症状性心律乱やイシュケミアによる合併症は発生せず,好ましい安全性プロファイルを示しています.
結論:
- ドブタミンストレスエコーカルディオグラフィは,冠動脈疾患の診断のための安全で正確な非侵襲的方法です.
- DSEは,CADの範囲を効果的に予測し,特に,静止心音図で既存の地域壁運動異常を有する患者に効果的です.
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