ワルファリンとリネゾリドの相互作用:重度の凝固障害の症例
Aniqa Batool1, Waqar Khan1, Muhammad Mohsin1
1National Institute of Cardiovascular Diseases, Karachi, Pakistan, nicvd.gov.bd.
Case reports in infectious diseases
|December 22, 2025
まとめ
リネゾリドとワルファリンの間の致命的な薬物相互作用が発生し、重度の凝固障害と多臓器不全につながりました。これらの薬剤を併用する際には、厳密な国際正規化比(INR)モニタリングが不可欠です。
科学分野:
- 薬理学
- 内科学
- 感染症学
背景:
- ワルファリンは、ビタミンK拮抗薬であり、心房細動(AF)、静脈血栓塞栓症(VTE)、および機械弁置換術後の患者に処方されます。
- リネゾリドは、オキサゾリジノン系抗生物質であり、重度のグラム陽性菌感染症の治療に使用されます。
- これらの薬剤間の薬物相互作用は、慎重な管理が必要です。
研究 の 目的:
- リネゾリドとワルファリンの間の致命的な薬物相互作用を報告すること。
- 厳密な国際正規化比(INR)モニタリングの重要な必要性を強調すること。
主な方法:
- 感染性心内膜炎、AF、およびAKIの既往歴のある62歳女性患者の症例検討。
- 患者は経口リネゾリドとワルファリンで退院しました。
- 退院後のINRモニタリングと臨床経過。
主要な成果:
- 患者は重度の凝固障害(INR 12)、急性腎障害、高カリウム血症、多臓器不全を発症しました。
- 凝固障害はワルファリンとリネゾリドの相互作用に起因すると考えられました。
- 治療にもかかわらず、患者は死亡しました。
結論:
- リネゾリドとワルファリンの併用投与は、重度の凝固障害を引き起こす可能性があります。
- これらの薬剤の併用中は、頻繁かつ厳密なINRモニタリングが不可欠です。
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