Drug interactions
Droperidol + Sevoflurane
Severity: Major
Droperidol and Sevoflurane: major interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Droperidol carries a boxed warning for QT prolongation and torsades de pointes. Sevoflurane also prolongs QTc, so using both increases the likelihood of life-threatening ventricular arrhythmia.
What this interaction means in plain words
Droperidol and Sevoflurane 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.
Why it happens
Additive QT prolongation through delayed cardiac repolarization.
What to do
Use a non-QT-prolonging antiemetic such as dexamethasone in place of droperidol where possible. If both are needed, check QTc and electrolytes beforehand and monitor the ECG.
What to ask your pharmacist
- 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?
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Other interactions of Sevoflurane
Frequently asked questions
Can I take Droperidol with Sevoflurane?
MediHelp rates the interaction as major. Droperidol and Sevoflurane 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. Droperidol carries a boxed warning for QT prolongation and torsades de pointes. Sevoflurane also prolongs QTc, so using both increases the likelihood of life-threatening ventricular arrhythmia.
How serious is the interaction between Droperidol and Sevoflurane?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Use a non-QT-prolonging antiemetic such as dexamethasone in place of droperidol where possible. If both are needed, check QTc and electrolytes beforehand and monitor the ECG.
What other medicines interact with Sevoflurane?
MediHelp also lists interactions of Sevoflurane with, for example, Amiodarone, Amisulpride, Arsenic trioxide. The full list is on the Sevoflurane page.
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