Drug interactions
Desflurane + Saquinavir
Severity: Major
Desflurane and Saquinavir: 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
Ritonavir-boosted saquinavir prolongs the QT and PR intervals, and volatile anesthetics can add to QT effects. The combination may increase the risk of torsades de pointes.
What this interaction means in plain words
Desflurane and Saquinavir 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 pharmacodynamic QT prolongation.
What to do
Obtain a baseline ECG and correct electrolytes before anesthesia. Monitor the ECG continuously and avoid other QT-prolonging drugs.
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 Desflurane
Frequently asked questions
Can I take Desflurane with Saquinavir?
MediHelp rates the interaction as major. Desflurane and Saquinavir 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. Ritonavir-boosted saquinavir prolongs the QT and PR intervals, and volatile anesthetics can add to QT effects. The combination may increase the risk of torsades de pointes.
How serious is the interaction between Desflurane and Saquinavir?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Obtain a baseline ECG and correct electrolytes before anesthesia. Monitor the ECG continuously and avoid other QT-prolonging drugs.
What other medicines interact with Desflurane?
MediHelp also lists interactions of Desflurane with, for example, Amisulpride, Anagrelide, Arsenic trioxide. The full list is on the Desflurane page.
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