相互作用
Dofetilide + Mexiletine
重症度: 重大
Dofetilide and Mexiletine: major interaction.
最終更新日
医療従事者向け・参照専用。このページは簡潔な要約であり、医学的助言ではなく、公式の添付文書や臨床判断に代わるものではありません。処方・調剤の前に必ず確認してください。
このページの臨床コンテンツは英語でのみ提供されています。
概要
Dofetilide prolongs repolarization and can cause torsades de pointes. Mexiletine shortens the action potential and has less QT effect, but both are antiarrhythmics with proarrhythmic potential. Combined use is not well studied.
この相互作用をわかりやすく説明すると
Dofetilide and Mexiletine can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Dofetilide belongs to Cardiovascular; Mexiletine belongs to Cardiovascular.
なぜ起こるのか
Additive antiarrhythmic and proarrhythmic electrophysiologic effects.
対処法
Avoid unless specialist-directed; if used, monitor ECG, QTc and electrolytes, especially during dofetilide initiation in hospital.
薬剤師に尋ねること
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
Pro+会員向け
ページ全体を見る
アカウントを作成してPro+トライアルを始めると、DofetilideとMexiletineの臨床対応の詳細なアドバイス、追加の注記、エビデンスの詳細、処方全体を対象とした相互作用チェッカーを利用できます。
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
WebでPro+を14日間無料でお試し。カード登録不要。
Mexiletineのその他の相互作用
Dofetilideのその他の相互作用
よくある質問
Can I take Dofetilide with Mexiletine?
MediHelp rates the interaction as major. Dofetilide and Mexiletine can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Dofetilide prolongs repolarization and can cause torsades de pointes. Mexiletine shortens the action potential and has less QT effect, but both are antiarrhythmics with proarrhythmic potential. Combined use is not well studied.
How serious is the interaction between Dofetilide and Mexiletine?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid unless specialist-directed; if used, monitor ECG, QTc and electrolytes, especially during dofetilide initiation in hospital.
What other medicines interact with Mexiletine?
MediHelp also lists interactions of Mexiletine with, for example, Fezolinetant, Pimozide, Alosetron. The full list is on the Mexiletine page.
完全なモノグラフ、用量、相互作用チェッカーはMediHelpアプリで
MediHelpアプリで、完全なリファレンスを開き、複数薬剤の相互作用をチェックし、用量ツールを利用できます。
