急性冠動脈症候群後の口服抗血小板療法: レビュー
Hassan Kamran1, Hani Jneid1,2, Waleed T Kayani1
1Section of Cardiology, Department of Medicine, Baylor College of Medicine, Houston, Texas.
JAMA
|April 20, 2021
まとめ
二重抗血小板療法 (DAPT) でアスピリンとP2Y12阻害剤を併用すると,急性冠動脈症候群 (ACS) の患者で心血管疾患が著しく減少します. 治療期間と薬剤の選択は,出血と缺血のリスクに基づいて個別化する必要があります.
科学分野:
- 心臓病科
- 薬理学について
- 臨床医学
背景:
- 急性冠動脈症候群 (ACS) は,年間約100万人の米国における主要な死因です.
- アスピリンとP2Y12阻害剤を併用した二重抗血小板療法 (DAPT) は,ACS後の心血管疾患の減少に極めて重要です.
研究 の 目的:
- ACS患者のDAPT療法と治療期間に関する現在のガイドラインと最近の証拠をレビューする.
- 個人の出血と不血症リスクプロファイルに基づいてDAPTの調整の重要性を強調する.
主な方法:
- 2016年のACC/AHAガイドラインの分析と,ACSにおける抗血小板治療に関する,その後のランダム化臨床試験
- 出血リスクの階層化と患者の特徴を含む,DAPTの持続時間に影響を与える要因の評価.
- 新しいP2Y12阻害剤 (プラスグレル,チカグレル) とクロピドグレルの有効性と安全性の比較
主要な成果:
- DAPTの推奨期間は,低出血リスクの場合は長期間,高出血リスクの場合は短期間 (3~6ヶ月) である.
- 高出血リスクは,特定の基準によって定義される (例えば,年齢 ≥65,低BMI,以前の出血,経口抗凝固剤の使用).
- 新しいP2Y12阻害剤はより強力で,プラズグレルは,出血を増加させることなく,血性イベントを減らすために,ISAR- REACT-5でチカグレロールよりも優れていることを示した.
結論:
- DAPTはACSにおける心血管疾患の減少に効果的です.
- 最適なDAPT戦略には,患者に特有の出血および缺血のリスクを慎重に考慮する必要があります.
- P2Y12阻害剤を投与する前にアスピリンの投与を中止すると,結果が改善することが示唆されています.
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