黒人患者の再発性脳卒中の予防のためのアスピリンとティクロピディン:ランダム化試験
Philip B Gorelick1, DeJuran Richardson, Michael Kelly
1Department of Neurologic Sciences, Rush Medical College, Chicago, IL 60612, USA. Philip_B_Gorelick@rush.edu
JAMA
|June 12, 2003
まとめ
アスピリンとティクロピディンは,黒人患者の再発性脳卒中,心筋梗塞,または血管死を予防する点で有意な違いを示さなかった. アスピリンは脳卒中を減らす傾向を示し,ティクロピジンによりより良い選択肢と考えられています.
科学分野:
- 神経学 神経学とは
- 心臓病学 心臓病学
- クリニック・トライアル 臨床試験
背景:
- 黒人の個人は,米国内の他の集団と比較して不釣り合いに高い脳卒中率を経験しています.
- 脳卒中の死亡率と発症率は,黒人の約2倍です.
研究 の 目的:
- 黒人患者の再発性脳卒中を予防するためにアスピリンとティクロピディンの有効性と安全性を評価する.
- 高リスク集団におけるこれらの抗血小板剤の有効性を比較する.
主な方法:
- ランダム化され,二重盲検され,マルチセンター試験で,最近非心臓血管性不全性脳卒中を患った1809人の黒人参加者が参加しました.
- 参加者は,チクロピジン (500 mg/d) またはアスピリン (650 mg/d) を最大2年間服用するように割り当てられました.
- 主要エンドポイントは,再発性脳卒中,心筋梗塞,または血管死亡の複合体でした.
主要な成果:
- この研究は,無意味な結果のため,早期に中止され,ティクロピジンとアスピリン群 (14.7%対12.3%,P=.12),初等結果において統計的に有意な差は認められなかった.
- 致命的または非致命的な脳卒中 (P=.08) の二次的な結果において,アスピリンを好む傾向は有意ではありませんでした.
- 重篤な中性不全は,ティクロピジン投与を受けた患者の3.4%で,アスピリン投与を受けた患者の2.2%で発生した (P=.12).
結論:
- ティクロピジンもアスピリンも,2年間の期間で再発性脳卒中,心筋梗塞,または血管死を予防する点で統計的に有意な利点を示さなかった.
- アスピリンは脳卒中を減少させる傾向を示し,ティクロピディンの有害事象プロフィールを考慮すると,非心臓血管性不全性脳卒中を患っているアスピリン耐性のある黒人患者にとって好ましい治療法と考えられています.
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