イバブラジンと慢性心不全 (SHIFT) のアウトカム:ランダム化プラセボ対照試験
Karl Swedberg1, Michel Komajda, Michael Böhm
1Department of Emergency and Cardiovascular Medicine, Sahlgrenska Academy, University of Gothenburg, Göteborg, Sweden. karl.swedberg@gu.se
Lancet (London, England)
|August 31, 2010
まとめ
イバブラジンによる心拍数低下は,慢性心不全患者の臨床結果を有意に改善しました. この研究は,心不全の病理生理学における心拍数の役割を確認し,心血管疾患による死亡と入院を減らす.
科学分野:
- 心臓病学 心臓病学
- 薬理学 薬理学とは
背景:
- 慢性心不全は,著しい死亡率と罹患率を示しています.
- 休息時の心拍数上昇は,心不全患者の不良結果の既知の危険因子です.
- 選択性シヌスノード阻害剤イバブラジン (ivabradine) は,心拍数低下を標的とする.
研究 の 目的:
- 症状性心不全患者の臨床結果に対するイバブラジンによる心拍数低下の影響を評価する.
- イバブラジンによる心血管疾患による死亡と,心不全の悪化による入院の減少におけるイバブラディンの有効性を評価する.
- 心不全の病理生理学における心拍数の役割を確認するために.
主な方法:
- ランダム化,ダブルブラインド,プラセボ対照,並列グループ研究.
- 含有基準:症状のある心不全,LVEF ≤35%,HR ≥70 bpmのシナウスリズム,心不全で最近入院,安定した背景治療.
- 患者はイバブラジンを7.5mg BIDまたはプラセボで定位した; 主要エンドポイントは,心血管疾患による死亡または心不全による入院の複合でした.
主要な成果:
- 6558人の患者がランダム (3268人がイバブラジン,3290人がプラセボ) に割り当てられ,追跡期間の中央値は22.9ヶ月でした.
- イバブラジンは,主因エンドポイントのイベントを18% (HR 0.82,p<0.0001) 大幅に減少させ,これは主に心不全の悪化と心不全による死亡による入院の減少によって引き起こされた.
- 副作用:症状性ブラジカルディア (イバブラジン5%対プラセボ1%) と視力障害 (3%イバブラジン対プラセボ1%) はイバブラジンでより頻繁に見られました.
結論:
- イバブラジンによる心拍数低下は,心不全患者の臨床結果を改善します.
- この研究は,心不全の病理生理学における心拍数の重要な役割を強調しています.
- イバブラジンは,選択された心不全の患者にとって,副作用を減らすための効果的な治療法です.
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