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[An analgesic strategy for tympanoplasties]
A Neidhardt1, K Bachour, M Pequignot
1Département d'Anesthésie, Hôpital Jean-Minjoz, CHR Besançon.
Cahiers D'Anesthesiologie
|January 1, 1992
Summary
A hyperbolic alfentanil infusion mode offers faster recovery after tympanoplasty anesthesia compared to constant flow. This method appears safer, though individual patient factors require consideration.
Area of Science:
- Anesthesiology
- Pharmacology
Context:
- Tympanoplasty requires anesthesia, with nitrous oxide withdrawn to prevent graft barotrauma.
- Intravenous alfentanil infusion is used to manage analgesia during surgery.
Purpose:
- To compare two alfentanil infusion modes: constant flow versus decreasing hyperbolic flow (H).
- To evaluate anesthesia quality, recovery time, and safety of alfentanil administration during tympanoplasty.
Summary:
- Alfentanil plasma levels remained steady in both groups, with higher standard deviation in the H mode.
- The hyperbolic flow (H) mode resulted in significantly shorter extubation times (46 min) compared to constant flow (92 min).
- While H mode appears safer, individual reactivity, drug interactions, and genetic polymorphism warrant caution; two patients experienced apnea post-awakening.
Impact:
- The hyperbolic flow mode of alfentanil administration may improve patient recovery post-tympanoplasty.
- Findings suggest potential for optimizing opioid administration strategies in surgical anesthesia.
- Highlights the importance of considering patient-specific factors for anesthetic drug administration.