不安定な冠動脈症候群の患者の介入前に長期にわたる抗血栓前治療 ("冷却"戦略) の評価:ランダム化制御試験
Franz-Josef Neumann1, Adnan Kastrati, Gisela Pogatsa-Murray
1Medizinische Klinik, Technische Universität München, Munich, Germany. Franz-Josef.Neumann@herzzentrum.de
JAMA
|September 25, 2003
まとめ
不安定な冠動脈症候群におけるカテーテル介入の前に長期にわたる抗血栓前治療は,アウトカムを改善しませんでした. 強烈な抗血小板療法による即時介入は,心臓発作が少なく,死亡率が増加せず,よりよい結果を示した.
科学分野:
- 心臓病学 心臓病学
- 介入性心臓病学 介入性心臓病学
- トロンボシス (Thrombosis) とは
背景:
- 不安定な冠動脈症候群では,リスクを軽減するために,抗血栓治療が先行するカテーテル介入がしばしば必要です.
- 定期的な抗血栓前治療を支持する臨床試験の証拠は限られている.
研究 の 目的:
- 長期にわたる抗血栓前治療が,早期介入と比較して,急性不安定冠動脈症候群におけるアウトカムを改善するかどうかを評価する.
- 治療前の介入の遅延が患者に利益をもたらすという仮説を検証する.
主な方法:
- ランダム化制御試験で,不安定なアンギナとSTセグメントのうつ病,または心臓トロポニンTの上昇を患った410人の患者が参加しました.
- 患者は,抗血栓前治療または早期介入 (<6時間) の3〜5日間に,分断されていないヘパリン,アスピリン,クロピドグレル,チロフィバンでランダムに割り当てられました.
主要な成果:
- 主要エンドポイント (30日間の大型非致死性心筋梗塞または死亡の発生率) は,長期の予行治療で11.6%で,早期介入で5.9%であった (RR, 1.96;P=.04).
- 延長された前治療群におけるリスクの増加は,キャセテリゼーション前に発生したイベントによるものでした.
- カテーテリゼーション後のイベントの発生率は,グループ間で類似していました.
結論:
- 長期にわたる抗血栓前治療のためにカテーテル介入を延期することは,不安定な冠動脈症候群の結果を改善しません.
- 強烈な抗血小板治療による即時介入は,長時間の予行治療戦略に匹敵し,または優れています.
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