最初の報告されていない急性心筋梗塞のリスクが高い患者の特定は,電子ビームコンピュータトモグラフィーによって行われます
P Raggi1, T Q Callister, B Cooil
1EBT Research Foundation and Vanderbilt University, Nashville, TN 37075, USA. praggi@attglobal.net
Circulation
|March 1, 2000
まとめ
冠動脈カルシウムスコア (CS) は冠動脈疾患の重症度に関連しています. しかし,CSパーセンチルは,心疾患のリスクのある個人を特定するために,絶対スコアよりも有効です.
科学分野:
- 心臓病学 心臓病学
- 放射線学 放射線学
- 予防医学は,予防的な医療です.
背景:
- 絶対的な冠動脈カルシウムスコア (CS) と冠動脈疾患の重症度との間には明確な関係があります.
- しかし,硬直冠動脈イベントは,すべての範囲のCSで発生し,絶対得点のみの制限を示します.
研究 の 目的:
- 冠動脈カルシウムスコア (CS) の有効性を評価するために,冠動脈イベントのリスクのある個人を層分けします.
- 硬冠動脈イベントの絶対CS対CS百分位の予測値を比較する.
主な方法:
- 電子ビームCT (EBCT) 画像を用いた2つの分析が行われました.
- グループA:報告されていない心筋梗塞の60日以内に画像を撮影した172人の患者.
- グループB: EBCTでスクリーニングされた632人の患者,急性心筋梗塞または心臓死のために平均32ヶ月間追跡された.
主要な成果:
- 急性冠動脈イベントを患った患者の大半は冠動脈にカルシウムが含まれていた.
- より高い絶対CSは,より高いイベント率と相関しているが,ほとんどのイベントは,75パーセントを超えたCSの患者で発生した.
- 軽度,中度,および広範囲の絶対的なCSは,イベントを経験した患者の間で同様に分布しました.
結論:
- 冠動脈カルシウムは,急性冠動脈イベントを患っている患者で一般的です.
- CS パーセンチルは,絶対的な CS よりもリスクの階層化のためのより効果的なスクリーニングツールです.
- 高いCSパーセンチルは,冠動脈イベントのリスクが高い個人を特定します.
関連する概念動画
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